The Insider Ledger

Weekly intelligence from public SEC filings

Nothing on this site is investment advice. It is an automated research digest of public SEC filings.

semiconductors

What am I looking at?

All tracked filing activity in this sector. Capital committed sums disclosed values of insider purchases, new and increased fund positions, and activist stakes across the full tracked history; new versus follow-on distinguishes first-time from repeated quarterly 13F positions. Weekly commentary comes from the editions that discussed this sector, and stocks are ranked by their current signal score.

$27.7B
Capital committed
11
Active investors
73
New positions
3
Follow-on adds

Weekly commentary

2026-W35 — All semiconductor activity this week was AMD insider selling: CEO Lisa Su, CTO Mark Papermaster, EVP Forrest Norrod, and general counsel Ava Hahn together filed about $30.2M in 10b5-1 plan sales, the largest dollar total of any sector this week. No purchases, no 13D filings, and no institutional accumulation anywhere in the sector.

2026-W34 — The Q2 13F season shows broad, if uneven, accumulation across the chip stack: Micron drew a roughly 16x increase from Coatue, TSMC picked up net adds from three of four holders, and Applied Materials/Lam Research split between a clean add and a mixed picture. Broadcom is the clearest divergence — one manager doubling down while another exited entirely.

2026-W30 — One seller, one name: AMD's CTO on a standing 10b5-1 plan (~$3.3M). No buys, no activist filings, no 13F adds in chips this week.

2026-W29 — Two sellers, two names. The NVIDIA director's ~$186M discretionary trust sale dominates the dollar figure; AMD's CTO sale was a small scheduled disposal. No accumulation, no activist filings, no 13F adds in chips this week.

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Active investors