Brier-audited daily research on the AI inference memory basket.
"Inference > training; the AI bottleneck shifts from GPU compute to memory bandwidth, IO, and networking."
— Stanley Druckenmiller's Q1 2026 13F thesis (paraphrased from public coverage)
Stan Druckenmiller's Q1 2026 13F showed an uncharacteristically large 30+ new positions, with the dominant theme being AI inference infrastructure beyond NVDA. The 6 tickers:
| Ticker | Company | Memory wall thesis |
|---|---|---|
| AVGO | Broadcom | Custom AI ASICs + networking switches |
| INTC | Intel | Server CPUs + Optane post-mortem still relevant |
| ARM | ARM Holdings | Datacenter Neoverse design wins accelerating |
| MU | Micron | HBM3E + DDR5 — direct memory wall play |
| STX | Seagate | Mass storage tier for AI training data lakes |
| WDC | Western Digital | NAND for inference cache + storage tier |
Each day at 14:00 ET, a Claude-managed brief covers:
- Daily price / volume / flow on each ticker
- Catalyst monitor (earnings, design wins, supply contracts)
- Mispricing flags (when Polymarket / options imply ≠ technical signal)
- Brier-audited prediction log — public
Most stock newsletters cherry-pick winners. This one publishes every prediction with a timestamp + later resolves it against actual price action. The Brier score is the differentiation — anyone can publish bullish theses, few will get scored honestly.
- Druckenmiller Q1 2026 13F filing (SEC EDGAR)
- Motley Fool: Druckenmiller AI inference basket coverage
- Dwarkesh Podcast: Reiner Pope — Chip design from the bottom up (2026-05-22) — why GPU / TPU / FPGA / brain architectures evolved into their specific shapes; the paper-layer backing for why "memory wall" is a basket of memory + bandwidth + interconnect, not a single chip
- 晚点聊 LateTalk ep. 169 (2026-06-15) — Cerebras 早期投资人周楠 — non-Nvidia compute thesis; surfaced Cerebras as a pre-IPO add to the watchlist
- Acquirers Multiple: Druckenmiller 2026-03 podcast notes
- Daily 14:00 ET launchd cron triggers
scripts/daily_brief.py - Pulls Yahoo Finance + 13F latest + catalyst news via Tavily
- Claude Sonnet 4.6 produces structured brief
- Output:
briefs/YYYY-MM-DD.md - Auto-published to GitHub Pages
- Baseline (2026-06-09)
- Daily brief cron
- Brier audit pipeline (settle predictions at 1mo / 3mo / 6mo)
- Public Brier leaderboard at memory-wall.alex-jb.com
- Add bonus tickers: NVDA (control), SK Hynix ADR, AVAV, KLAC
- Add CRBS (Cerebras) to the basket on IPO. Pre-IPO watchlist pending — non-Nvidia inference + wafer-scale moat per LateTalk ep169 (2026-06-15). When listed, weight ≤ 5% until 30-day post-IPO Brier signal accumulates.
- SpaceX-IPO-Tracker — same pattern, SpaceX-pure-play tickers
- Orallexa — multi-agent quant research stack
MIT