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LRCX · Lam Research Corp · Holdings

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Market Cap
$342.22B
Shares
1.25B

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 3,134
Total Value: $485,782,176,135
Total Shares: 1,121,138,653
Showing 1–100 of 3,245 holdings by value · page 1 of 33

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 3,134 13F filers · Δ vs Mar 31, 2026
Top Holder
11.8%
Sep 2023 → Jun 2026 · range 11.0% – 14.4%
−2.6 pts
Top 5
33.3%
Sep 2023 → Jun 2026 · range 28.9% – 40.1%
+0.9 pts
Top 10
46.5%
Sep 2023 → Jun 2026 · range 42.3% – 52.8%
+4.3 pts
HHI
327
Sep 2023 → Jun 2026 · range 286 – 466
Broadly held−16

Quarterly Activity

vs Mar 31, 2026
New
647
Increased
1,061
Decreased
1,158
Sold Out
140
Unchanged
268
Holder count: +507
Institutional value: +146.7%
Shares held: +21.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 3,245
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 707549 CUSIP 512807306 13F (30d) 111 filings 89 filers Visit website Investor relations