Lam Research Ownership | Who Owns Lam Research?

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Lam Research Ownership Summary

Lam Research is owned by 47.96% institutional investors, 0.28% insiders, and 51.76% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 10.62% of LRCX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.18% of its assets in Lam Research shares.

LRCX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Lam Research	47.96%	0.28%	51.76%
Sector	Technology Stocks	36.01%	15.20%	48.78%
Idea	Semiconductor Stocks List	48.16%	6.95%	44.89%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	132.73M	10.62%	$57.51B
Vanguard group	131.19M	10.41%	$22.46B
Blackrock	12.93M	9.88%	$13.77B
Vanguard capital management	81.68M	6.54%	$35.40B
State street	60.70M	4.86%	$26.32B
Jpmorgan chase	45.32M	3.63%	$18.62B
Geode capital management	34.51M	2.76%	$14.92B
Fmr	33.68M	2.69%	$14.59B
Invesco	24.26M	1.93%	$5.18B
Ameriprise financial	20.79M	1.65%	$4.44B

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Oaktop capital management ii	2.06M	38.00%	$893.12M
Four tree island advisory	227.80K	32.55%	$98.71M
Marlowe partners lp	7.77K	23.26%	$8.28M
Trybe capital management lp	478.25K	17.58%	$102.18M
Harbor island capital	148.88K	17.18%	$64.51M
Groesbeck investment management corp /nj/	22.29K	15.39%	$9.66M
Heard capital	757.76K	14.05%	$328.36M
Blue whale capital llp	1.02M	13.98%	$440.71M
Mcbroom & associates	55.40K	12.07%	$24.01M
Trivest advisors	860.00K	11.72%	$372.66M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	18.12M	0.78%	18.12M
Jpmorgan chase	45.32M	1.03%	12.60M
Sg americas securities	3.11M	0.75%	2.02M
California public employees retirement system	5.87M	0.77%	1.97M
State street	60.70M	0.78%	1.55M

Top Sellers

Holder	Shares	% Assets	Change
Goldman sachs group	10.48M	0.26%	-4.36M
Artisan partners limited partnership	786.24K	0.54%	-4.24M
J. stern & co. llp	19.66K	0.41%	-3.44M
Citadel advisors	1.11M	0.04%	-3.13M
Cincinnati insurance	-	-	-2.49M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	18.12M	0.78%	18.12M	$7.85B
Whale rock capital management	957.88K	2.64%	957.88K	$204.66M
Axa investment managers	776.14K	0.28%	776.14K	$103.93M
Actiam	535.75K	1.79%	535.75K	$232.16M
Wt asset management	493.23K	4.23%	493.23K	$213.73M

Sold Out

Holder	Change
Northwest capital management	-1.00
Tfo-tdc	-1.00
Horrell capital management	-2.00
Macroview investment management	-2.00
Financial synergies wealth advisors	-2.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	2,035	-16.60%	604,135,581	-42.22%	47	0.70%	991	-17.28%	791	-10.52%
Dec 31, 2025	2,035	-5.30%	792,103,628	-22.07%	62	0.99%	984	-11.51%	757	7.22%
Sep 30, 2025	2,057	7.53%	1,000,873,380	-4.75%	78	1.18%	1,053	8.00%	682	4.44%
Jun 30, 2025	1,862	2.59%	1,047,926,605	3.08%	81	1.30%	952	-2.06%	637	19.07%
Mar 31, 2025	1,788	2.11%	1,012,042,531	-1.79%	78	1.23%	954	-41.65%	529	1663.33%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	39.71M	3.18%	-38.32K
Vanguard Morn Total Stk Mkt Idx Investor	39.71M	3.18%	-38.32K
Vanguard 500 Index Investor	32.49M	2.60%	-204.28K
Invesco QQQ Trust	25.90M	2.07%	-328.49K
iShares Core S&P 500 ETF	16.87M	1.35%	26.90K
Fidelity 500 Index	16.04M	1.28%	62.16K
SPDR® S&P 500 ETF	15.97M	1.24%	-266.09K
State Street® SPDR® S&P 500® ETF	15.44M	1.23%	13.05K
SPDR® S&P 500® ETF	15.44M	1.22%	190.00K
SPDR® S&P 500® ETF Trust	15.54M	1.21%	-81.43K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 06, 2026	ARCHER TIMOTHY	President and CEO	Sell	$9.00M
Jul 13, 2026	TALWALKAR ABHIJIT Y	-	Sell	$6.12M
Jul 02, 2026	ARCHER TIMOTHY	President and CEO	Sell	$11.70M
Jun 12, 2026	BRANDT ERIC	-	Sell	$1.37M
Jun 12, 2026	BRANDT ERIC	-	Sell	$106.71K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	3
2026 Q2	-	46
2026 Q1	-	6
2025 Q4	-	7
2025 Q3	-	-

LRCX Ownership FAQ

Who owns the most shares of Lam Research?

Lam Research’s largest shareholders are Blackrock funding, inc. /de (132.73M shares, 10.62%), Vanguard group (131.19M shares, 10.41%), and Blackrock (12.93M shares, 9.88%). Together, they hold 30.92% of Lam Research’s total shares outstanding.

Does Blackrock own Lam Research?

Yes, BlackRock owns 9.88% of Lam Research, totaling 12.93M shares as of Jun 2024. This represents 0.31% of BlackRock's total assets, with a market value of 13.77B$. In the last quarter, BlackRock increased its holdings by 757.22K shares, a 6.22% change.

Who is Lam Research’s biggest shareholder by percentage of total assets invested?

Oaktop capital management ii is Lam Research’s biggest shareholder by percentage of total assets invested, with 38.00% of its assets in 2.06M Lam Research shares, valued at 893.12M$.

Who is the top mutual fund holder of Lam Research shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Lam Research shares, with 3.18% of its total shares outstanding invested in 39.71M Lam Research shares.

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