Billionaire David Tepper Trimmed Micron and Sold out of SanDisk. Here’s the New AI Stocks He’s Buying
Billionaire investor Tepper shifts portfolio from memory chips to AI stocks.

“David Tepper just posted a 32% return in six months riding memory chips, then quietly dumped his winners and moved the money somewhere most AI…”
Why it matters
Weekly Silicon's editorial model scored this 1.55/10 overall, reading it above all as a markets story — money repricing the semiconductor and AI landscape. Its strongest dimension is regional relevance at 3/10 — direct impact on US technology hubs rather than a purely overseas development — with economic impact close behind at 2/10, pointing to meaningful consequences for capital, capacity, or competition across the industry. The impact is global rather than tied to one US hub, so the thing to watch is how it filters into domestic supply chains and hiring.
Derived from the AI score breakdown below.
AI score breakdown
A composite of 1.55/10 put this story at #28 for Tuesday, August 18, 2026, driven mostly by regional relevance (3/10) and economic impact (2/10).
Composite is the weighted sum of the five dimensions. How scoring works →
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