Lam Research LRCX
US equityMarket cap rank #66Semiconductor Equipment & MaterialsSemiconductorsArtificial Intelligence
$200.44 +$15.24 (+8.23%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $201.17 +0.36%
Open$208.65
Prev close$185.20
Day range$198.07 – $209.20
Volume17.96M
Market cap$250.38B
P/E (TTM)29.9
Dividend yield0.55%
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership87.9%+0.13 pts vs. prior quarter
Institutions holding3,595-64 vs. prior quarter
Insider trades (recent)18 buys / 29 sellsNet selling
Short interest2.26% of floatDays to cover 3.6 · as of 15 Oct 2026
Short-sale volume share6.3%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$250.43M (4 inflow days, 16 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 28.9% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 2.15% to 2.26% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Deka Investment GmbH | Mutual Fund | 2026/Q3 | +1,882,698 | 0.2% |
| T. Rowe Price Group, Inc. | Mutual Fund | 2026/Q3 | +11,356,652 | 2.0% |
| Van Eck Associates Corporation | Mutual Fund | 2026/Q3 | +8,922,854 | 0.9% |
| J.P. Morgan Asset Management, Inc. | Mutual Fund | 2026/Q3 | +8,392,261 | 2.5% |
| JPMorgan Chase & Co. | Public Company | 2026/Q3 | +2,382,799 | 0.9% |
| Wells Fargo & Company | Public Company | 2026/Q3 | +2,328,896 | 0.5% |
| SG Americas Securities, LLC | Private Company | 2026/Q3 | +2,018,759 | 0.2% |
| The Goldman Sachs Group, Inc. | Public Company | 2026/Q3 | +1,978,733 | 0.3% |
| J.P. Morgan Mansart Management Limited | Mutual Fund | 2026/Q3 | +1,829,026 | 0.2% |
| Macquarie Investment Management Business Trust | Mutual Fund | 2026/Q3 | +1,651,228 | 0.1% |
| Invesco Capital Management LLC | Mutual Fund | 2026/Q3 | +1,598,212 | 3.3% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +1,545,830 | 4.9% |
| Swedbank Robur Fonder AB | Mutual Fund | 2026/Q3 | +1,060,858 | 0.4% |
| Rafferty Asset Management, LLC | Mutual Fund | 2026/Q3 | +989,215 | 0.2% |
| Bank of America Corporation | Public Company | 2026/Q3 | +963,368 | 0.3% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 22 Oct 2026 | Timothy Archer | Chief Executive Officer | Derivative Exercise and Sale | -31,400 | $227.02 | 1,129,662 |
| 8 Sep 2026 | Timothy Archer | Chief Executive Officer | Intent to Sell (Form 144) | -30,000 | $319.26 | – |
| 1 Sep 2026 | Seshasayee Varadarajan | Chief Operating Officer | Automatic Disposition | -20,000 | $291.32 | 169,224 |
| 1 Sep 2026 | Seshasayee Varadarajan | Chief Operating Officer | Derivative Exercise and Sale | -39,750 | $291.32 | 169,224 |
| 30 Aug 2026 | Ava Harter | Chief Legal Officer | Automatic Disposition | -5,000 | $302.46 | 6,760 |
| 5 Aug 2026 | Timothy Archer | Chief Executive Officer | Derivative Exercise and Sale | -30,000 | $300.00 | 983,249 |
| 4 Aug 2026 | Ava Harter | Chief Legal Officer | Sale to Issuer | -5,790 | $307.42 | 11,759 |
| 12 Jul 2026 | Abhijit Talwalkar | Independent Chairperson | Automatic Disposition | -18,282 | $335.00 | 85,507 |
| 1 Jul 2026 | Timothy Archer | Chief Executive Officer | Derivative Exercise and Sale | -30,000 | $390.01 | 983,249 |
| 11 Jun 2026 | Eric Brandt | Independent Director | Intent to Sell (Form 144) | -54,500 | $359.39 | – |
| 31 May 2026 | Neil Fernandes | Senior VP of Global Customer Operations | Automatic Disposition | -7,659 | $309.60 | 59,485 |
| 13 May 2026 | Patrick Lord | Former Executive Vice President of Customer Support Business Group & Global Operations | Intent to Sell (Form 144) | -59,490 | $300.17 | – |
| 30 Apr 2026 | Neil Fernandes | Senior VP of Global Customer Operations | Open Market Disposition | -18,170 | $255.14 | 67,144 |
| 26 Apr 2026 | Ava Harter | Chief Legal Officer | Derivative Exercise and Sale | -6,010 | $258.66 | 5,819 |
| 9 Mar 2026 | Abhijit Talwalkar | Independent Chairperson | Other Disposition | -4,571 | – | 103,789 |
| 5 Mar 2026 | Karthikeyan Rammohan | Senior Vice President of Global Operations & Enterprise Solutions | Initial Statement of Beneficial | +0 | – | 16,600 |
| 3 Mar 2026 | Douglas Bettinger | Chief Financial Officer | Derivative Exercise and Sale | -50,057 | $224.03 | 1,042,455 |
| 3 Mar 2026 | Douglas Bettinger | Chief Financial Officer | Derivative Exercise and Retained | +27,693 | $49.09 | 1,042,455 |
| 3 Mar 2026 | Ava Harter | Chief Legal Officer | Open Market Disposition | -1,500 | $222.66 | 5,819 |
| 1 Mar 2026 | Douglas Bettinger | Chief Financial Officer | Derivative Exercise and Sale | -40,329 | $230.22 | 1,014,762 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 28,325,154 | 2.3% | 3.6 |
| 30 Sep 2026 | 25,810,795 | 2.1% | 2.6 |
| 15 Sep 2026 | 26,081,081 | 2.1% | 3.1 |
| 31 Aug 2026 | 27,751,158 | 2.2% | 3.8 |
| 14 Aug 2026 | 28,419,138 | 2.3% | 3.3 |
| 31 Jul 2026 | 26,963,996 | 2.2% | 2.2 |
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