Lam Research Corporation (LRCX) ownership: Top institutional holder: BlackRock, Inc. ($28.40B). Insider activity: Net Seller (0 buys, 20 sells). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 132905820.00 | $28.40B | 2026-03-31 |
| VANGUARD GROUP INC | 131185330.00 | $22.46B | 2025-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 81155744.00 | $17.34B | 2026-03-31 |
| STATE STREET CORP | 59158300.00 | $12.65B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 37060963.00 | $7.92B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 35175926.00 | $7.50B | 2026-03-31 |
| FMR LLC | 33574842.00 | $7.17B | 2026-03-31 |
| JPMORGAN CHASE & CO | 32712933.00 | $6.54B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-07-13 | |
| Sell | null | 2026-07-02 | |
| Sell | null | 2026-07-02 | |
| Sell | null | 2026-07-02 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 |
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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.