LRCX in the 13F filings

Lam Research Corp · CUSIP 512807306

Sector · Industrials Theme · AI infrastructure and semiconductors· L3VLUP-defined Theme · Industrials and automation· L3VLUP-defined

Quarter

Q3 2026 · early filers Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

Quarter end: 31 Mar 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 12 May 2026
Managers listing it: 50; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 33 listed it in both
Shares listed: 171,495,477; combined, among listed positions
Reported value: $36.5bn; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 26 buyers (opened or added shares) and 26 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,399,924.

Managers listing LRCX in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

50 of 50 holders

				Action		Filing
Invesco Ltd	50,464,319	$10.8bn	1.05%	Trimmed	-575,370	12 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	33,574,842	$7.2bn	0.38%	Added	+6,893,278	15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	13,239,357	$2.8bn	0.33%	Trimmed	-455,853	15 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP	13,179,818	$2.8bn	1.52%	Trimmed	-169,652	14 May 2026 (the filing on sec.gov)
Coatue Management LLC	10,043,505	$2.1bn	7.39%	Added	+237,940	15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	9,265,026	$2.0bn	0.94%	Added	+181,087	18 May 2026 (the filing on sec.gov)
Artisan Partners LP	5,029,666	$1.1bn	1.72%	Trimmed	-2,921,363	13 May 2026 (the filing on sec.gov)
Tiger Global Management LLC	3,900,439	$833m	3.65%	Held	0	15 May 2026 (the filing on sec.gov)
MFS Investment Management	3,309,521	$726m	0.24%	Trimmed	-870,349	14 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	3,452,063	$724m	0.33%	Trimmed	-257,621	15 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC	2,991,882	$639m	0.91%	Added	+874,183	13 May 2026 (the filing on sec.gov)
Capital Research Global Investors	2,604,483	$556m	0.09%	Trimmed	-37,946	13 May 2026 (the filing on sec.gov)
AllianceBernstein LP	2,966,378	$508m	0.16%	Trimmed	-236,326	15 May 2026 (the filing on sec.gov)
Millennium Management LLC	1,588,727	$339m	0.14%	Added	+479,718	15 May 2026 (the filing on sec.gov)
Bridgewater Associates LP	1,571,229	$336m	1.50%	Trimmed	-1,470,432	15 May 2026 (the filing on sec.gov)
Two Sigma Investments LP	1,502,227	$321m	0.26%	Added	+244,770	15 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	1,463,046	$313m	0.24%	Trimmed	-207,354	27 Oct 2026 (the filing on sec.gov)
Man Group PLC	1,187,713	$254m	0.46%	Trimmed	-219,598	15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	1,114,732	$238m	under 0.1%	Trimmed	-3,126,734	15 May 2026 (the filing on sec.gov)
Polen Capital Management LLC	1,054,495	$225m	1.56%	New	new	14 May 2026 (the filing on sec.gov)
Whale Rock Capital Management LLC	957,877	$205m	2.64%	New	new	15 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.	946,616	$202m	0.12%	Added	+289,944	15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	918,775	$196m	under 0.1%	Added	+360,939	15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC	852,801	$182m	0.21%	Trimmed	-43,671	15 May 2026 (the filing on sec.gov)
Jane Street Group LLC	699,544	$149m	under 0.1%	Added	+605,305	12 May 2026 (the filing on sec.gov)

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Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Fidelity (FMR LLC)existing position · 33,574,842 shares now+6,893,278
Polen Capital Management LLCnew position · 1,054,495 shares now+1,054,495
Whale Rock Capital Management LLCnew position · 957,877 shares now+957,877
Acadian Asset Management LLCexisting position · 2,991,882 shares now+874,183
Voloridge Investment Management LLCnew position · 608,317 shares now+608,317

Reductions

Citadel Advisors LLCexisting position · 1,114,732 shares now-3,126,734
Artisan Partners LPexisting position · 5,029,666 shares now-2,921,363
Bridgewater Associates LPexisting position · 1,571,229 shares now-1,470,432
MFS Investment Managementexisting position · 3,309,521 shares now-870,349
Invesco Ltdexisting position · 50,464,319 shares now-575,370

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (10)

Polen Capital Management LLC$225m
Whale Rock Capital Management LLC$205m
Voloridge Investment Management LLC$130m
Tudor Investment Corp$40m
Third Point LLC$16m
Brevan Howard Capital Management LP$13m
Winton Group Ltd$4.6m
PDT Partners LLC$2.6m
Caxton Associates LLP$2.0m
GAMCO Investors Inc$680k

Exited (3)

Maverick Capital Ltdwas $108m
Davidson Kempner Capital Management LPwas $17m
Element Capital Management LLCwas $1.4m

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

2 in Q3 2024 to 45 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

LRCX by quarter
Quarter	Holders	Reported value	Buyers	Sellers
Q3 2024	2	$624m	2	0
Q4 2024	41	$9.6bn	40	0
Q1 2025	40	$9.3bn	22	18
Q2 2025	35	$11.4bn	19	18
Q3 2025	40	$17.6bn	24	16
Q4 2025	37	$29.2bn	23	26
Q1 2026	43	$36.2bn	26	26
Q2 2026	45	$73.9bn	24	30

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

LRCX and NVDA →LRCX and AVGO →LRCX and MU →Choose a stock to compare with LRCX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own LRCX, latest filings →Back to the 13F Explorer →

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