The largest holder of Lam Research stock is BlackRock Advisors LLC, with 97.9 million shares (7.83% of the company), worth about $29.52 billion as of September 25, 2026. The 10 largest holders together own 39.8%.
In Q2 2026, 3,262 institutional holdings reports listed shares worth $465.00 billion.
Insiders reported 78 transactions in the last two years: 15 sales worth $87.56 million and 1 purchase. The newest one on file is from May 1, 2026 (Fernandes Neil J, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 1, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 97.9 million | 7.83% | $29.5B |
| Vanguard Capital Management LLC | 81.7 million | 6.53% | $24.6B |
| State Street Corporation | 60.7 million | 4.85% | $18.3B |
| Invesco Advisers, Inc. | 52.3 million | 4.18% | $15.8B |
| JPMorgan Investment Management, Inc. | 45.3 million | 3.62% | $13.7B |
| Vanguard Portfolio Management LLC | 36.6 million | 2.93% | $11.0B |
| Geode Capital Management LLC | 34.5 million | 2.76% | $10.4B |
| Fidelity Management & Research Co. LLC | 33.6 million | 2.68% | $10.1B |
| BlackRock Life Ltd. | 31.3 million | 2.50% | $9.4B |
| T. Rowe Price International Ltd. | 24.6 million | 1.97% | $7.4B |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 3,262 | – | $465.0B |
| Q1 2026 | 2,753 | 1.04 billion | $221.0B |
| Q4 2025 | 2,497 | 1.08 billion | $185.0B |
| Q3 2025 | 2,205 | 1.05 billion | $140.0B |
| Q2 2025 | 1,970 | 1.06 billion | $103.0B |
| Q1 2025 | 1,872 | 1.04 billion | $75.6B |
| Q4 2024 | 1,722 | 1.04 billion | $74.9B |
| Q3 2024 | 135 | 18.6 million | $3.1B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Fernandes Neil J | May 1, 2026 | Officer | Sale at price 255.14 per share. | $4.6M |
| Harter Ava | Apr 27, 2026 | Officer | Conversion of Exercise of derivative security at price 77.04 per share. | $463,004 |
| Harter Ava | Apr 27, 2026 | Officer | Sale at price 258.66 per share. | $1.6M |
| Talwalkar Abhijit Y | Mar 10, 2026 | Director | Stock Gift at price 0.00 per share. | – |
| Bettinger Douglas R | Mar 4, 2026 | Chief Financial Officer | Conversion of Exercise of derivative security at price 49.09 - 98.15 per share. | $5.1M |
| Bettinger Douglas R | Mar 4, 2026 | Chief Financial Officer | Sale at price 224.03 per share. | $11.2M |
| Harter Ava | Mar 4, 2026 | Officer | Sale at price 222.66 per share. | $333,990 |
| Bettinger Douglas R | Mar 2, 2026 | Chief Financial Officer | Conversion of Exercise of derivative security at price 30.03 - 59.88 per share. | $3.4M |
| Bettinger Douglas R | Mar 2, 2026 | Chief Financial Officer | Sale at price 230.22 per share. | $9.3M |
| Harter Ava | Mar 2, 2026 | Officer | Sale at price 232.50 per share. | $930,000 |
| Fernandes Neil J | Feb 27, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Correia Christina | Feb 27, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 78 insider transactions in the last two years.
BlackRock Advisors LLC, with 7.83% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.53%) and State Street Corporation (4.85%).
3,262 institutional holdings reports listed Lam Research shares in Q2 2026 worth $465.00 billion.
In the last two years insiders reported 15 sales and 1 purchase (78 transactions in all); the newest on file is from May 1, 2026.