diff --git a/src/__tests__/CompareResults/ResultsView.test.tsx b/src/__tests__/CompareResults/ResultsView.test.tsx
index b647ad7b0..216585bdf 100644
--- a/src/__tests__/CompareResults/ResultsView.test.tsx
+++ b/src/__tests__/CompareResults/ResultsView.test.tsx
@@ -591,4 +591,28 @@ describe('Results View', () => {
     expect(screen.queryByText('Results')).not.toBeInTheDocument();
     expect(screen.getByText(titleName)).toBeInTheDocument();
   });
+
+  it('toggles all rows when the Expand all checkbox is clicked', async () => {
+    const user = userEvent.setup({ advanceTimers: jest.advanceTimersByTime });
+    renderWithRoute(<ResultsView title={Strings.metaData.pageTitle.results} />);
+
+    await screen.findByRole('table');
+
+    const expandAllCheckbox = screen.getByRole('checkbox', {
+      name: /Expand all/i,
+    });
+    expect(expandAllCheckbox).not.toBeChecked();
+    expect(screen.queryAllByTestId(/ExpandLessIcon/)).toHaveLength(0);
+
+    await user.click(expandAllCheckbox);
+    expect(expandAllCheckbox).toBeChecked();
+    const expandLessIcons = await screen.findAllByTestId(/ExpandLessIcon/);
+    expect(expandLessIcons.length).toBeGreaterThan(0);
+
+    await user.click(expandAllCheckbox);
+    expect(expandAllCheckbox).not.toBeChecked();
+    await waitFor(() => {
+      expect(screen.queryAllByTestId(/ExpandLessIcon/)).toHaveLength(0);
+    });
+  });
 });
diff --git a/src/__tests__/CompareResults/RevisionRow.test.tsx b/src/__tests__/CompareResults/RevisionRow.test.tsx
index 1ad9eccc3..8b4c2be4f 100644
--- a/src/__tests__/CompareResults/RevisionRow.test.tsx
+++ b/src/__tests__/CompareResults/RevisionRow.test.tsx
@@ -85,6 +85,7 @@ describe('<RevisionRow>', () => {
           gridTemplateColumns='none'
           replicates={false}
           testVersion='student-t'
+          expandAll={false}
         />,
       );
       const shortNameNode = await screen.findByText(shortName);
@@ -123,6 +124,7 @@ describe('Subtest count pills', () => {
           gridTemplateColumns='none'
           replicates={false}
           testVersion='mann-whitney-u'
+          expandAll={false}
         />,
       );
 
@@ -151,6 +153,7 @@ describe('Subtest count pills', () => {
           gridTemplateColumns='none'
           replicates={false}
           testVersion='mann-whitney-u'
+          expandAll={false}
         />,
       );
 
@@ -172,6 +175,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='student-t'
+        expandAll={false}
       />,
     );
 
@@ -199,6 +203,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='mann-whitney-u'
+        expandAll={false}
       />,
     );
 
@@ -220,6 +225,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='student-t'
+        expandAll={false}
       />,
     );
 
@@ -236,6 +242,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='student-t'
+        expandAll={false}
       />,
     );
     const expandRow = await screen.findByTestId(/ExpandMoreIcon/);
@@ -256,6 +263,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='mann-whitney-u'
+        expandAll={false}
       />,
     );
 
@@ -284,6 +292,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='mann-whitney-u'
+        expandAll={false}
       />,
     );
 
@@ -305,6 +314,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='mann-whitney-u'
+        expandAll={false}
       />,
     );
 
@@ -323,6 +333,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='mann-whitney-u'
+        expandAll={false}
       />,
     );
 
@@ -350,6 +361,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='mann-whitney-u'
+        expandAll={false}
       />,
     );
 
@@ -369,6 +381,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='student-t'
+        expandAll={false}
       />,
     );
 
@@ -397,6 +410,7 @@ describe('Expanded row', () => {
         gridTemplateColumns='none'
         replicates={false}
         testVersion='student-t'
+        expandAll={false}
       />,
     );
 
@@ -435,6 +449,7 @@ describe('Expanded row', () => {
           gridTemplateColumns='none'
           replicates={false}
           testVersion='mann-whitney-u'
+          expandAll={false}
         />,
       );
       const roles = await screen.findAllByRole('cell');
@@ -451,6 +466,7 @@ describe('Expanded row', () => {
           gridTemplateColumns='none'
           replicates={false}
           testVersion='mann-whitney-u'
+          expandAll={false}
         />,
       );
       const roles = await screen.findAllByRole('cell');
@@ -468,6 +484,7 @@ describe('Expanded row', () => {
           gridTemplateColumns='none'
           replicates={false}
           testVersion='mann-whitney-u'
+          expandAll={false}
         />,
       );
       const roles = await screen.findAllByRole('cell');
@@ -476,3 +493,66 @@ describe('Expanded row', () => {
     });
   });
 });
+
+describe('expandAll prop', () => {
+  it('starts expanded when expandAll is true', async () => {
+    const {
+      testCompareData: [rowData],
+    } = getTestData();
+
+    renderWithRoute(
+      <RevisionRow
+        result={rowData}
+        view={compareView}
+        gridTemplateColumns='none'
+        replicates={false}
+        testVersion='student-t'
+        expandAll={true}
+      />,
+    );
+
+    expect(await screen.findByTestId(/ExpandLessIcon/)).toBeInTheDocument();
+  });
+
+  it('starts collapsed when expandAll is false', async () => {
+    const {
+      testCompareData: [rowData],
+    } = getTestData();
+
+    renderWithRoute(
+      <RevisionRow
+        result={rowData}
+        view={compareView}
+        gridTemplateColumns='none'
+        replicates={false}
+        testVersion='student-t'
+        expandAll={false}
+      />,
+    );
+
+    expect(await screen.findByTestId(/ExpandMoreIcon/)).toBeInTheDocument();
+  });
+
+  it('lets the user individually collapse a row that was force-expanded', async () => {
+    const user = userEvent.setup({ advanceTimers: jest.advanceTimersByTime });
+    const {
+      testCompareData: [rowData],
+    } = getTestData();
+
+    renderWithRoute(
+      <RevisionRow
+        result={rowData}
+        view={compareView}
+        gridTemplateColumns='none'
+        replicates={false}
+        testVersion='student-t'
+        expandAll={true}
+      />,
+    );
+
+    const collapseButton = await screen.findByTestId(/ExpandLessIcon/);
+    await user.click(collapseButton);
+
+    expect(await screen.findByTestId(/ExpandMoreIcon/)).toBeInTheDocument();
+  });
+});
diff --git a/src/__tests__/CompareResults/__snapshots__/OverTimeResultsView.test.tsx.snap b/src/__tests__/CompareResults/__snapshots__/OverTimeResultsView.test.tsx.snap
index 470b689ae..bb3eff989 100644
--- a/src/__tests__/CompareResults/__snapshots__/OverTimeResultsView.test.tsx.snap
+++ b/src/__tests__/CompareResults/__snapshots__/OverTimeResultsView.test.tsx.snap
@@ -13,7 +13,7 @@ exports[`Results View The table should match snapshot and other elements should
       class="MuiGrid-root MuiGrid-container MuiGrid-direction-xs-row MuiGrid-spacing-xs-2 f1wpas00 css-13620ud-MuiGrid-root"
     >
       <div
-        class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-4 MuiGrid-grid-xs-12 css-1mujxwq-MuiGrid-root"
+        class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-3 MuiGrid-grid-xs-12 css-11ufmbb-MuiGrid-root"
       >
         <form
           aria-label="Search by title, platform, revision or options"
@@ -309,6 +309,41 @@ exports[`Results View The table should match snapshot and other elements should
           </button>
         </div>
       </div>
+      <div
+        class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-xs-auto css-zh2j38-MuiGrid-root"
+      >
+        <label
+          aria-label="Expand all rows"
+          class="MuiFormControlLabel-root MuiFormControlLabel-labelPlacementEnd css-1bsjtco-MuiFormControlLabel-root"
+          data-mui-internal-clone-element="true"
+        >
+          <span
+            class="MuiButtonBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall PrivateSwitchBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall css-1nff2up-MuiButtonBase-root-MuiSwitchBase-root-MuiCheckbox-root"
+          >
+            <input
+              class="PrivateSwitchBase-input css-12xagqm-MuiSwitchBase-root"
+              data-indeterminate="false"
+              type="checkbox"
+            />
+            <svg
+              aria-hidden="true"
+              class="MuiSvgIcon-root MuiSvgIcon-fontSizeSmall css-54rgmy-MuiSvgIcon-root"
+              data-testid="CheckBoxOutlineBlankIcon"
+              focusable="false"
+              viewBox="0 0 24 24"
+            >
+              <path
+                d="M19 5v14H5V5h14m0-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2z"
+              />
+            </svg>
+          </span>
+          <span
+            class="MuiTypography-root MuiTypography-body1 MuiFormControlLabel-label css-1vajmro-MuiTypography-root"
+          >
+            Expand all
+          </span>
+        </label>
+      </div>
     </div>
     <div
       class="fdtnfac f1l733lh"
@@ -876,7 +911,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_11_"
+                      aria-controls="_r_12_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
@@ -1075,7 +1110,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_18_"
+                      aria-controls="_r_19_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
@@ -1274,7 +1309,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_1f_"
+                      aria-controls="_r_1g_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
@@ -1473,7 +1508,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_1m_"
+                      aria-controls="_r_1n_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
diff --git a/src/__tests__/CompareResults/__snapshots__/ResultsTable.test.tsx.snap b/src/__tests__/CompareResults/__snapshots__/ResultsTable.test.tsx.snap
index 76791d86e..3475bacc6 100644
--- a/src/__tests__/CompareResults/__snapshots__/ResultsTable.test.tsx.snap
+++ b/src/__tests__/CompareResults/__snapshots__/ResultsTable.test.tsx.snap
@@ -906,7 +906,7 @@ exports[`Results Table Should match snapshot 1`] = `
                   class="MuiGrid-root MuiGrid-container MuiGrid-direction-xs-row MuiGrid-spacing-xs-2 f1wpas00 css-13620ud-MuiGrid-root"
                 >
                   <div
-                    class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-4 MuiGrid-grid-xs-12 css-1mujxwq-MuiGrid-root"
+                    class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-3 MuiGrid-grid-xs-12 css-11ufmbb-MuiGrid-root"
                   >
                     <form
                       aria-label="Search by title, platform, revision or options"
@@ -1202,6 +1202,41 @@ exports[`Results Table Should match snapshot 1`] = `
                       </button>
                     </div>
                   </div>
+                  <div
+                    class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-xs-auto css-zh2j38-MuiGrid-root"
+                  >
+                    <label
+                      aria-label="Expand all rows"
+                      class="MuiFormControlLabel-root MuiFormControlLabel-labelPlacementEnd css-1bsjtco-MuiFormControlLabel-root"
+                      data-mui-internal-clone-element="true"
+                    >
+                      <span
+                        class="MuiButtonBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall PrivateSwitchBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall css-1nff2up-MuiButtonBase-root-MuiSwitchBase-root-MuiCheckbox-root"
+                      >
+                        <input
+                          class="PrivateSwitchBase-input css-12xagqm-MuiSwitchBase-root"
+                          data-indeterminate="false"
+                          type="checkbox"
+                        />
+                        <svg
+                          aria-hidden="true"
+                          class="MuiSvgIcon-root MuiSvgIcon-fontSizeSmall css-54rgmy-MuiSvgIcon-root"
+                          data-testid="CheckBoxOutlineBlankIcon"
+                          focusable="false"
+                          viewBox="0 0 24 24"
+                        >
+                          <path
+                            d="M19 5v14H5V5h14m0-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2z"
+                          />
+                        </svg>
+                      </span>
+                      <span
+                        class="MuiTypography-root MuiTypography-body1 MuiFormControlLabel-label css-1vajmro-MuiTypography-root"
+                      >
+                        Expand all
+                      </span>
+                    </label>
+                  </div>
                 </div>
                 <div
                   class="fdtnfac f1l733lh"
@@ -1769,7 +1804,7 @@ exports[`Results Table Should match snapshot 1`] = `
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_17_"
+                                  aria-controls="_r_18_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -1968,7 +2003,7 @@ exports[`Results Table Should match snapshot 1`] = `
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_1e_"
+                                  aria-controls="_r_1f_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -2167,7 +2202,7 @@ exports[`Results Table Should match snapshot 1`] = `
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_1l_"
+                                  aria-controls="_r_1m_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -2447,7 +2482,7 @@ exports[`Results Table Should match snapshot 1`] = `
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_1t_"
+                                  aria-controls="_r_1u_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -3662,7 +3697,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
                   class="MuiGrid-root MuiGrid-container MuiGrid-direction-xs-row MuiGrid-spacing-xs-2 f1wpas00 css-13620ud-MuiGrid-root"
                 >
                   <div
-                    class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-4 MuiGrid-grid-xs-12 css-1mujxwq-MuiGrid-root"
+                    class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-3 MuiGrid-grid-xs-12 css-11ufmbb-MuiGrid-root"
                   >
                     <form
                       aria-label="Search by title, platform, revision or options"
@@ -3701,7 +3736,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
                             aria-invalid="false"
                             aria-label="Search by title, platform, revision or options"
                             class="MuiInputBase-input MuiOutlinedInput-input MuiInputBase-inputSizeSmall MuiInputBase-inputAdornedStart MuiInputBase-inputAdornedEnd css-3v3un6-MuiInputBase-input-MuiOutlinedInput-input"
-                            id="_r_p5_"
+                            id="_r_pf_"
                             placeholder="Filter results"
                             type="search"
                             value=""
@@ -3958,6 +3993,41 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
                       </button>
                     </div>
                   </div>
+                  <div
+                    class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-xs-auto css-zh2j38-MuiGrid-root"
+                  >
+                    <label
+                      aria-label="Expand all rows"
+                      class="MuiFormControlLabel-root MuiFormControlLabel-labelPlacementEnd css-1bsjtco-MuiFormControlLabel-root"
+                      data-mui-internal-clone-element="true"
+                    >
+                      <span
+                        class="MuiButtonBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall PrivateSwitchBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall css-1nff2up-MuiButtonBase-root-MuiSwitchBase-root-MuiCheckbox-root"
+                      >
+                        <input
+                          class="PrivateSwitchBase-input css-12xagqm-MuiSwitchBase-root"
+                          data-indeterminate="false"
+                          type="checkbox"
+                        />
+                        <svg
+                          aria-hidden="true"
+                          class="MuiSvgIcon-root MuiSvgIcon-fontSizeSmall css-54rgmy-MuiSvgIcon-root"
+                          data-testid="CheckBoxOutlineBlankIcon"
+                          focusable="false"
+                          viewBox="0 0 24 24"
+                        >
+                          <path
+                            d="M19 5v14H5V5h14m0-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2z"
+                          />
+                        </svg>
+                      </span>
+                      <span
+                        class="MuiTypography-root MuiTypography-body1 MuiFormControlLabel-label css-1vajmro-MuiTypography-root"
+                      >
+                        Expand all
+                      </span>
+                    </label>
+                  </div>
                 </div>
                 <div
                   class="fdtnfac f1l733lh"
@@ -4538,7 +4608,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_ps_"
+                                  aria-controls="_r_q7_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -4750,7 +4820,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_q3_"
+                                  aria-controls="_r_qe_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -4962,7 +5032,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_qa_"
+                                  aria-controls="_r_ql_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -5251,7 +5321,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
                                 data-testid="expand-revision-button"
                               >
                                 <button
-                                  aria-controls="_r_qi_"
+                                  aria-controls="_r_qt_"
                                   aria-expanded="false"
                                   class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                                   tabindex="0"
@@ -6064,7 +6134,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
           data-testid="expand-revision-button"
         >
           <button
-            aria-controls="_r_t6_"
+            aria-controls="_r_tj_"
             aria-expanded="false"
             class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
             tabindex="0"
@@ -6315,7 +6385,7 @@ exports[`Results Table for MannWhitneyResultsItem for mann-whitney-u testVersion
           data-testid="expand-revision-button"
         >
           <button
-            aria-controls="_r_te_"
+            aria-controls="_r_tr_"
             aria-expanded="false"
             class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
             tabindex="0"
@@ -6618,7 +6688,7 @@ exports[`Results Table should render different blocks when rendering several rev
           data-testid="expand-revision-button"
         >
           <button
-            aria-controls="_r_4d_"
+            aria-controls="_r_4g_"
             aria-expanded="false"
             class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
             tabindex="0"
@@ -6864,7 +6934,7 @@ exports[`Results Table should render different blocks when rendering several rev
           data-testid="expand-revision-button"
         >
           <button
-            aria-controls="_r_4l_"
+            aria-controls="_r_4o_"
             aria-expanded="false"
             class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
             tabindex="0"
diff --git a/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap b/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap
index a021e1dcb..b46ee3df1 100644
--- a/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap
+++ b/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap
@@ -4,7 +4,7 @@ exports[`Results View Should display Base, New and Common graphs with replicates
 <section
   aria-label="Revision Row Details"
   class="MuiBox-root css-13s8wtg"
-  id="_r_b5_"
+  id="_r_bb_"
 >
   <div
     class="MuiStack-root css-1714cpj-MuiStack-root"
@@ -396,7 +396,7 @@ exports[`Results View Should display Base, New and Common graphs with tooltips 1
 <section
   aria-label="Revision Row Details"
   class="MuiBox-root css-13s8wtg"
-  id="_r_9n_"
+  id="_r_9s_"
 >
   <div
     class="MuiStack-root css-1714cpj-MuiStack-root"
@@ -862,7 +862,7 @@ exports[`Results View The table should match snapshot and other elements should
       class="MuiGrid-root MuiGrid-container MuiGrid-direction-xs-row MuiGrid-spacing-xs-2 f1wpas00 css-13620ud-MuiGrid-root"
     >
       <div
-        class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-4 MuiGrid-grid-xs-12 css-1mujxwq-MuiGrid-root"
+        class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-md-3 MuiGrid-grid-xs-12 css-11ufmbb-MuiGrid-root"
       >
         <form
           aria-label="Search by title, platform, revision or options"
@@ -1158,6 +1158,41 @@ exports[`Results View The table should match snapshot and other elements should
           </button>
         </div>
       </div>
+      <div
+        class="MuiGrid-root MuiGrid-direction-xs-row MuiGrid-grid-xs-auto css-zh2j38-MuiGrid-root"
+      >
+        <label
+          aria-label="Expand all rows"
+          class="MuiFormControlLabel-root MuiFormControlLabel-labelPlacementEnd css-1bsjtco-MuiFormControlLabel-root"
+          data-mui-internal-clone-element="true"
+        >
+          <span
+            class="MuiButtonBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall PrivateSwitchBase-root MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall MuiCheckbox-root MuiCheckbox-colorPrimary MuiCheckbox-sizeSmall css-1nff2up-MuiButtonBase-root-MuiSwitchBase-root-MuiCheckbox-root"
+          >
+            <input
+              class="PrivateSwitchBase-input css-12xagqm-MuiSwitchBase-root"
+              data-indeterminate="false"
+              type="checkbox"
+            />
+            <svg
+              aria-hidden="true"
+              class="MuiSvgIcon-root MuiSvgIcon-fontSizeSmall css-54rgmy-MuiSvgIcon-root"
+              data-testid="CheckBoxOutlineBlankIcon"
+              focusable="false"
+              viewBox="0 0 24 24"
+            >
+              <path
+                d="M19 5v14H5V5h14m0-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2z"
+              />
+            </svg>
+          </span>
+          <span
+            class="MuiTypography-root MuiTypography-body1 MuiFormControlLabel-label css-1vajmro-MuiTypography-root"
+          >
+            Expand all
+          </span>
+        </label>
+      </div>
     </div>
     <div
       class="fdtnfac f1l733lh"
@@ -1725,7 +1760,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_17_"
+                      aria-controls="_r_18_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
@@ -1924,7 +1959,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_1e_"
+                      aria-controls="_r_1f_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
@@ -2123,7 +2158,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_1l_"
+                      aria-controls="_r_1m_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
@@ -2322,7 +2357,7 @@ exports[`Results View The table should match snapshot and other elements should
                     data-testid="expand-revision-button"
                   >
                     <button
-                      aria-controls="_r_1s_"
+                      aria-controls="_r_1t_"
                       aria-expanded="false"
                       class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorPrimary MuiIconButton-sizeSmall css-1pgb59k-MuiButtonBase-root-MuiIconButton-root"
                       tabindex="0"
diff --git a/src/__tests__/Search/__snapshots__/CompareOverTime.test.tsx.snap b/src/__tests__/Search/__snapshots__/CompareOverTime.test.tsx.snap
index e4932c6b3..7e356f678 100644
--- a/src/__tests__/Search/__snapshots__/CompareOverTime.test.tsx.snap
+++ b/src/__tests__/Search/__snapshots__/CompareOverTime.test.tsx.snap
@@ -700,7 +700,7 @@ exports[`Compare Over Time selects and displays new time range when clicked 1`]
 <ul
   aria-labelledby="select-timerange-label"
   class="MuiList-root MuiList-padding MuiMenu-list css-1toxriw-MuiList-root-MuiMenu-list"
-  id="_r_4n_"
+  id="_r_4o_"
   role="listbox"
   tabindex="-1"
 >
diff --git a/src/__tests__/Search/__snapshots__/CompareWithBase.test.tsx.snap b/src/__tests__/Search/__snapshots__/CompareWithBase.test.tsx.snap
index 832aaddab..23836620f 100644
--- a/src/__tests__/Search/__snapshots__/CompareWithBase.test.tsx.snap
+++ b/src/__tests__/Search/__snapshots__/CompareWithBase.test.tsx.snap
@@ -658,7 +658,7 @@ exports[`Compare With Base selects and displays new framework when clicked 1`] =
 <ul
   aria-labelledby="select-framework-label"
   class="MuiList-root MuiList-padding MuiMenu-list css-1toxriw-MuiList-root-MuiMenu-list"
-  id="_r_26_"
+  id="_r_27_"
   role="listbox"
   tabindex="-1"
 >
@@ -4773,7 +4773,7 @@ exports[`Compare With Base should remove the checked revision once X button is c
 exports[`Compare With Base updates the framework and url when a new one is selected: after awsy is selected 1`] = `
 <ul
   class="MuiList-root MuiList-padding MuiMenu-list css-1toxriw-MuiList-root-MuiMenu-list"
-  id="_r_5n_"
+  id="_r_5p_"
   role="listbox"
   tabindex="-1"
 >
diff --git a/src/components/CompareResults/ResultsControls.tsx b/src/components/CompareResults/ResultsControls.tsx
index 5416add11..103ec22cf 100644
--- a/src/components/CompareResults/ResultsControls.tsx
+++ b/src/components/CompareResults/ResultsControls.tsx
@@ -1,5 +1,8 @@
+import Checkbox from '@mui/material/Checkbox';
 import FormControl from '@mui/material/FormControl';
+import FormControlLabel from '@mui/material/FormControlLabel';
 import Grid from '@mui/material/Grid';
+import Tooltip from '@mui/material/Tooltip';
 import { style } from 'typestyle';
 
 import { DownloadButton } from './DownloadButton';
@@ -23,25 +26,29 @@ interface Props {
   frameworkId: Framework['id'];
   testType?: TestVersion;
   resultsPromise: Promise<CombinedResultsItemType[][]>;
+  expandAll: boolean;
   onSearchTermChange: (searchTerm: string) => unknown;
   onFrameworkChange: (frameworkId: Framework['id']) => unknown;
   onTestVersionChange: (testType: TestVersion) => void;
+  onExpandAllChange: (checked: boolean) => void;
 }
 export default function ResultsControls({
   initialSearchTerm,
   frameworkId,
   testType,
   resultsPromise,
+  expandAll,
   onSearchTermChange,
   onFrameworkChange,
   onTestVersionChange,
+  onExpandAllChange,
 }: Props) {
   const mode = useAppSelector((state) => state.theme.mode);
   return (
     <Grid container className={controlsStyles} spacing={2}>
       <Grid
         size={{
-          md: 4,
+          md: 3,
           xs: 12,
         }}
       >
@@ -89,6 +96,20 @@ export default function ResultsControls({
       <Grid size='grow'>
         <DownloadButton resultsPromise={resultsPromise} />
       </Grid>
+      <Grid size='auto'>
+        <Tooltip title='Expand all rows'>
+          <FormControlLabel
+            control={
+              <Checkbox
+                checked={expandAll}
+                onChange={(e) => onExpandAllChange(e.target.checked)}
+                size='small'
+              />
+            }
+            label='Expand all'
+          />
+        </Tooltip>
+      </Grid>
     </Grid>
   );
 }
diff --git a/src/components/CompareResults/ResultsTable.tsx b/src/components/CompareResults/ResultsTable.tsx
index c1ac42f5b..3205fb5fe 100644
--- a/src/components/CompareResults/ResultsTable.tsx
+++ b/src/components/CompareResults/ResultsTable.tsx
@@ -53,6 +53,7 @@ export default function ResultsTable() {
   const [testVersionVal, setTestVersionVal] = useState<TestVersion>(
     testVersion ?? MANN_WHITNEY_U,
   );
+  const [expandAll, setExpandAll] = useState(false);
 
   const onFrameworkChange = (newFrameworkId: Framework['id']) => {
     setFrameworkIdVal(newFrameworkId);
@@ -97,9 +98,11 @@ export default function ResultsTable() {
           frameworkId={frameworkIdVal}
           testType={testVersionVal}
           resultsPromise={resultsPromise}
+          expandAll={expandAll}
           onSearchTermChange={onSearchTermChange}
           onFrameworkChange={onFrameworkChange}
           onTestVersionChange={onTestVersionChange}
+          onExpandAllChange={setExpandAll}
         />
         <TableHeader
           columnsConfiguration={columnsConfig}
@@ -142,6 +145,7 @@ export default function ResultsTable() {
               sortColumn={sortColumn}
               sortDirection={sortDirection}
               testVersion={testVersion ?? MANN_WHITNEY_U}
+              expandAll={expandAll}
             />
           )}
         </Await>
diff --git a/src/components/CompareResults/RevisionRow.tsx b/src/components/CompareResults/RevisionRow.tsx
index 239549c8d..5a4a18f22 100644
--- a/src/components/CompareResults/RevisionRow.tsx
+++ b/src/components/CompareResults/RevisionRow.tsx
@@ -1,4 +1,4 @@
-import { useId, useState, type ReactNode } from 'react';
+import { useId, useState, useEffect, type ReactNode } from 'react';
 
 import AppleIcon from '@mui/icons-material/Apple';
 import ExpandLessIcon from '@mui/icons-material/ExpandLess';
@@ -217,7 +217,14 @@ const getSubtestsCompareOverTimeLink = (
 function RevisionRow(props: RevisionRowProps) {
   const id = useId();
 
-  const { result, view, gridTemplateColumns, replicates, testVersion } = props;
+  const {
+    result,
+    view,
+    gridTemplateColumns,
+    replicates,
+    testVersion,
+    expandAll,
+  } = props;
   const {
     platform,
     base_measurement_unit: baseUnit,
@@ -243,6 +250,10 @@ function RevisionRow(props: RevisionRowProps) {
     strategy.getAvgValues(result);
   const [expanded, setExpanded] = useState(false);
 
+  useEffect(() => {
+    setExpanded(expandAll);
+  }, [expandAll]);
+
   const { counts: subtestCounts, isLoading: subtestsLoading } =
     useSubtestRegressionCount({ result, view, replicates, testVersion });
 
@@ -438,6 +449,7 @@ interface RevisionRowProps {
   view: typeof compareView | typeof compareOverTimeView;
   replicates: boolean;
   testVersion: TestVersion;
+  expandAll: boolean;
 }
 
 export default RevisionRow;
diff --git a/src/components/CompareResults/TableContent.tsx b/src/components/CompareResults/TableContent.tsx
index cf40aea86..e2bef041a 100644
--- a/src/components/CompareResults/TableContent.tsx
+++ b/src/components/CompareResults/TableContent.tsx
@@ -162,6 +162,7 @@ type Props = {
   sortDirection: 'asc' | 'desc' | null;
   replicates: boolean;
   testVersion: TestVersion;
+  expandAll: boolean;
 };
 
 function TableContent({
@@ -175,6 +176,7 @@ function TableContent({
   sortDirection,
   replicates,
   testVersion,
+  expandAll,
 }: Props) {
   const activeComparison = useAppSelector(
     (state) => state.comparison.activeComparison,
@@ -242,6 +244,7 @@ function TableContent({
           rowGridTemplateColumns={rowGridTemplateColumns}
           replicates={replicates}
           testVersion={testVersion}
+          expandAll={expandAll}
         />
       )}
     />
diff --git a/src/components/CompareResults/TableRevisionContent.tsx b/src/components/CompareResults/TableRevisionContent.tsx
index 31d35e3b9..3e972f573 100644
--- a/src/components/CompareResults/TableRevisionContent.tsx
+++ b/src/components/CompareResults/TableRevisionContent.tsx
@@ -22,8 +22,14 @@ const styles = {
 };
 
 function TableRevisionContent(props: Props) {
-  const { results, view, rowGridTemplateColumns, replicates, testVersion } =
-    props;
+  const {
+    results,
+    view,
+    rowGridTemplateColumns,
+    replicates,
+    testVersion,
+    expandAll,
+  } = props;
 
   if (!results.length) {
     return null;
@@ -63,6 +69,7 @@ function TableRevisionContent(props: Props) {
               gridTemplateColumns={rowGridTemplateColumns}
               replicates={replicates}
               testVersion={testVersion}
+              expandAll={expandAll}
             />
           ))}
         </div>
@@ -82,6 +89,7 @@ interface Props {
   view: typeof compareView | typeof compareOverTimeView;
   replicates: boolean;
   testVersion: TestVersion;
+  expandAll: boolean;
 }
 
 export default TableRevisionContent;