Lam Research Corporation (LRCX) ownership: insiders 0% · institutions 83% (13F 2026-03-31). Insider activity, 90 days: Routine (47 sales, 0 open-market buys). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 132905820.00 | $28.40B | 10.6% | 2026-03-31 |
| Vanguard | 131200290.00 | $28.03B | 10.5% | 2026-03-31 |
| State Street | 59158300.00 | $12.65B | 4.7% | 2026-03-31 |
| Geode Capital Management | 35175926.00 | $7.50B | 2.8% | 2026-03-31 |
| FMR (Fidelity) | 33574842.00 | $7.17B | 2.7% | 2026-03-31 |
| JPMorgan | 32712933.00 | $6.54B | 2.6% | 2026-03-31 |
| Invesco | 24255563.00 | $5.18B | 1.9% | 2026-03-31 |
| Ameriprise (Columbia) | 20788130.00 | $4.44B | 1.7% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-31 | |
| Sell | null | 2026-08-06 | |
| Sell | null | 2026-08-06 | |
| Sell | null | 2026-08-06 | |
| Sell | null | 2026-08-05 | |
| Sell | null | 2026-07-13 | |
| Sell | null | 2026-07-02 | |
| Sell | null | 2026-07-02 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.