LRCX · smart money activity

Who's buying Lam Research Corp.?

Duquesne Family Office: new position: 43.6K sh (~$19K, 0.4% of book); Altimeter Capital: new position: 394.1K sh (~$170.8M, 1.7% of book).

Smart money score57#45 of 372 stocks

Latest filingAug 14, 2026

Independent buyers2

Signal sources13F

Signals against0

LRCX insider buying, 13F and 13D filings

Aug 14, 2026New 13F stake

Duquesne Family Office: New position: 43.6K sh (~$19K, 0.4% of book)

13F for the quarter ended 2026-06-30. Filed 2026-08-14.
View the filing on SEC EDGAR ↗
Aug 14, 2026New 13F stake

Altimeter Capital: New position: 394.1K sh (~$170.8M, 1.7% of book)

13F for the quarter ended 2026-06-30. Filed 2026-08-14.
View the filing on SEC EDGAR ↗

Signals come from SEC filings: Form 4 (insiders, filed within 2 business days), 13F (fund holdings, up to 45 days after quarter end) and Schedule 13D (5%+ activist stakes). This page reports what the filings show; it is not investment advice.