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LRCX · Lam Research Corp · Holdings

Track LRCX — free
Market Cap
$317.78B
Shares
1.25B
Volume · Oct 30 18.74M Avg daily vol (3M) 9.36M

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.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 3,125
Total Value: $479,895,122,019
Total Shares: 1,121,186,584
Showing 1–100 of 3,237 holdings by value · page 1 of 33

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 3,167 13F filers
Top Holder
11.8%
Sep 2023 → Jun 2026 · range 10.0% – 12.7%
of institutional value
Top 5
33.2%
Sep 2023 → Jun 2026 · range 32.0% – 37.9%
of institutional value
Top 10
46.5%
Sep 2023 → Jun 2026 · range 44.6% – 50.1%
of institutional value
HHI
326
Sep 2023 → Jun 2026 · range 314 – 422
Broadly held

Who Holds LRCX

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 3,157 filers, like-for-like change +4.2%; actively managed books +6.0%; index-like books +2.0%.

Holder type Share Filers Change
Registered adviser 33.2% 2,015 +0.6%
Exempt adviser 0.3% 25 +26.2%
Adviser 8.9% 35 +33.1%
Bank 17.3% 63 +11.0%
Insurer 0.5% 7 -5.0%
Broker-dealer 0.2% 3 +5.4%
Registered fund 0.0% 1 -3.6%
Benefit plan 0.5% 10 -2.6%
Non-US 4.4% 27 +6.6%
Holding company 20.0% 20 +1.1%
Unknown 14.8% 951 -3.9%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 42 holders with no observed 2026-03-31 13F and 27 holders with no observed 2026-06-30 13F. Compared across CIK changes: 4 filers continue as Evelyn Partners Group Ltd; JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Conviction and Crowding

3,157 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
286
9.06% of filers hold it in their top 10
Mar 31, 2026: 140
Holders above 5%
73
median weight 0.248%
Mar 31, 2026: 29
Crowding
12.5%
of shares outstanding, 38th percentile
Mar 31, 2026: 12.8%
Private-fund advisers
12.1%
of shares outstanding
Institutional ownership
86.0%
86.3% of the estimated free float
Top 10 holders
48.5%
of 13F shares, Herfindahl 0.035
Active holders
+6.0%
like-for-like share change of active filers
5% stakes on record
2
0 13D, 2 13G (2 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 17.6 quarters
Under 1 year 15.7% 1 to 3 years 22.5% 3 years or more 61.8% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net sellers of $76,094,113 (3 buying, 3 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$142.64
estimated per share
Mar 31, 2026: $125.26
Quarter-end price
$432.90
implied by 13F values
Estimated gain or loss
+203.5%
price against the estimated cost
Estimated at a loss
0.005%
of costed 13F value

Estimated cost covers 6.69% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies LRCX's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 AVGO Broadcom Inc. 2,343
2 MU Micron Technology Inc 2,013
3 AMAT Applied Materials Inc 1,866
4 AMD Advanced Micro Devices Inc 2,014
5 LLY ELI LILLY & Co 2,213
6 META Meta Platforms, Inc. 2,295
7 NVDA Nvidia Corp 2,502
8 JPM Jpmorgan Chase & Co 2,260
9 CSCO Cisco Systems, Inc. 1,968
10 V Visa Inc. 2,095

Shareholder Targets

13F filers that own its peers but not LRCX, quarter ended Jun 30, 2026

Found through its holder-overlap peers: AVGO, MU, AMAT, AMD, LLY, META, NVDA, JPM, CSCO, V, AAPL, GOOGL, AMZN, MSFT, WMT, CAT, COST, TSLA, JNJ, ABBV. 4,164 filers in all.

# Filer In peers
1 Capital International Investors Adviser, Diversified active $169,856,411,691 19 held
2 LILLY ENDOWMENT INC Unknown, Unknown $108,400,867,760 1 held
3 Berkshire Hathaway Inc Insurer, Concentrated $103,714,385,303 2 held
4 PRIMECAP MANAGEMENT CO/CA/ Registered adviser, Diversified active $58,535,846,129 17 held
5 Sanders Capital, LLC Registered adviser, Concentrated $45,746,792,578 11 held
6 CANADA LIFE ASSURANCE Co Unknown, Diversified active $25,637,933,129 19 held
7 Dodge & Cox Registered adviser, Diversified active $22,504,496,233 15 held
8 TCI FUND MANAGEMENT LTD Exempt adviser, Concentrated $14,851,973,097 2 held
9 Alecta Tjanstepension Omsesidigt Unknown, Diversified active $13,403,019,480 19 held
10 H&H International Investment, LLC Registered adviser, Concentrated $11,496,638,177 5 held

Fund Ownership of LRCX by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 21.61% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 4.67% 58,323,530
Index ETFs 16.94% 211,644,532
Active ETFs 1.58% 19,675,989
Active funds 10.03% 125,234,906
Unclassified 3.89% 48,635,074
All registered funds 37.11% 463,514,031
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Showing 100 of 3,237
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 3,237 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 707549 CUSIP 512807306 13F (30d) 1311 filings 1252 filers Visit website Investor relations