Who owns Lam Research (LRCX)?
165 holders named in SEC filings declare between 56.4% and 77.8% of Lam Research's shares outstanding, as of Sep 9, 2026. The largest are BlackRock (10.6%), Vanguard (10.5%) and State Street (4.9%); the five largest hold 33.8% together. Another 2,943 institutions hold small positions worth 8.1%. At least 14.0% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 6.2% and sold 4.8% of the shares, a net purchase of 1.5%; 556 opened a position, 1,022 added, 1,130 reduced and 85 sold out. Biggest buyers: JPMorgan (+12.6M shares) and T. Rowe Price (+11.4M shares). Biggest sellers: Artisan Partners Limited Partnership (-4.2M) and Ameriprise Financial, Inc. (-3.5M). Over time, 3,064 managers declared Lam Research in their 13F for Q2 2026, against 956 for Q4 2019: together at most 85.8% of the shares outstanding, against 84.8%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| BlackRock | 13F | 10.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Vanguard | 13F | 10.5% | Jun 30, 2026 | Q4 2019 or earlier |
| State Street | 13F | 4.9% | Jun 30, 2026 | Q4 2019 or earlier |
| Invesco | 13F | 4.2% | Jun 30, 2026 | Q4 2019 or earlier |
| JPMorgan | 13F | 3.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Geode Capital | 13F | 2.8% | Jun 30, 2026 | Q4 2019 or earlier |
| Fidelity (FMR) | 13F | 2.7% | Jun 30, 2026 | Q4 2019 or earlier |
| T. Rowe Price | 13F | 2.0% | Jun 30, 2026 | Q4 2019 or earlier |
| UBS | 13F | 1.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Morgan Stanley | 13F | 1.5% | Jun 30, 2026 | Q4 2019 or earlier |
| Norges Bank | 13F | 1.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Ameriprise Financial, Inc. | 13F | 1.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Northern Trust | 13F | 1.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Franklin Templeton | 13F | 1.0% | Jun 30, 2026 | Q4 2024 |
| Goldman Sachs | 13F | 1.0% | Jun 30, 2026 | Q4 2019 or earlier |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 13F | 0.98% | Jun 30, 2026 | Q2 2025 |
| Bank of America | 13F | 0.90% | Jun 30, 2026 | Q4 2019 or earlier |
| VanEck | 13F | 0.89% | Jun 30, 2026 | Q4 2019 or earlier |
| Legal & General | 13F | 0.83% | Jun 30, 2026 | Q4 2019 or earlier |
| Janus Henderson | 13F | 0.79% | Jun 30, 2026 | Q4 2024 |
| COATUE MANAGEMENT LLC | 13F | 0.75% | Jun 30, 2026 | Q3 2022 |
| Amundi | 13F | 0.75% | Jun 30, 2026 | Q4 2019 or earlier |
| Nuveen | 13F | 0.74% | Jun 30, 2026 | Q4 2019 or earlier |
| BNY | 13F | 0.70% | Jun 30, 2026 | Q4 2019 or earlier |
| Charles Schwab | 13F | 0.62% | Jun 30, 2026 | Q4 2019 or earlier |
Lam Research institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 956 | 84.8% | $36.1B | 56.9% |
| Q4 2020 | 1,128 | 83.4% | $56.8B | 59.5% |
| Q4 2021 | 1,400 | 80.9% | $81.8B | 57.6% |
| Q4 2022 | 1,313 | 81.9% | $47.0B | 53.9% |
| Q4 2023 | 1,603 | 83.2% | $85.8B | 51.7% |
| Q4 2024 | 1,587 | 80.0% | $74.5B | 45.9% |
| Q4 2025 | 2,345 | 85.3% | $183.5B | 44.5% |
| Q2 2026 | 3,064 | 85.8% | $463.6B | 44.7% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.