L3VLUP
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
35
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 22 listed it in both
Shares listed
22,456,709
combined, among listed positions
Reported value
$33.0bn
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: 20 buyers (opened or added shares) and 19 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,021,386.

Managers listing KLAC 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.

35 of 35 holders

ActionFiling
Invesco Ltd4,412,777$6.5bn0.63%Trimmed-125,64812 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)4,401,487$6.5bn0.34%Added+1,857,27115 May 2026 (the filing on sec.gov)
Capital World Investors4,084,069$6.0bn0.82%Added+434,23813 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,680,572$2.5bn0.29%Trimmed-1,024,40115 May 2026 (the filing on sec.gov)
MFS Investment Management1,641,635$2.4bn0.82%Trimmed-98,44714 May 2026 (the filing on sec.gov)
Wellington Management Group LLP1,440,469$2.1bn0.40%Added+1,002,44115 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd1,240,678$1.8bn0.87%Trimmed-111,64518 May 2026 (the filing on sec.gov)
Capital Research Global Investors976,438$1.4bn0.22%Added+784,49513 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP791,279$1.2bn0.63%Added+16,78014 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC468,189$689m0.98%Added+344,17813 May 2026 (the filing on sec.gov)
AllianceBernstein LP419,437$510m0.17%Added+166,95815 May 2026 (the filing on sec.gov)
AQR Capital Management LLC147,143$210m0.10%Added+76915 May 2026 (the filing on sec.gov)
Bridgewater Associates LP108,674$160m0.71%Added+30,30715 May 2026 (the filing on sec.gov)
Marshall Wace LLP91,561$135m0.13%Added+90,72215 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP86,615$128munder 0.1%Added+33,27215 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC85,816$126m0.15%Trimmed-105,02215 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC82,170$121m0.09%Added+15,82727 Oct 2026 (the filing on sec.gov)
Man Group PLC78,698$116m0.21%Trimmed-6,33015 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.49,672$73munder 0.1%Added+10,13715 May 2026 (the filing on sec.gov)
Walleye Capital LLC42,232$62m0.26%Added+21,13013 May 2026 (the filing on sec.gov)
Citadel Advisors LLC37,883$56munder 0.1%Trimmed-123,76415 May 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP26,600$39m0.14%Newnew13 May 2026 (the filing on sec.gov)
Millennium Management LLC25,274$37munder 0.1%Trimmed-45,30715 May 2026 (the filing on sec.gov)
Third Point LLC11,000$16m0.78%Newnew15 May 2026 (the filing on sec.gov)
Jane Street Group LLC9,105$13munder 0.1%Trimmed-4,25312 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

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

Increases

Reductions

New positions and exits

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

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.
28 in Q3 2024 to 28 in Q2 2026

Tracked managers listing it, at least.

0102030split2014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
KLAC by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201311$1.6bnn.a.n.a.
Q3 201312$1.8bnn.a.n.a.
Q4 201311$1.8bnn.a.n.a.
Q1 201411$1.8bnn.a.n.a.
Q2 201415$1.9bnn.a.n.a.
Q3 20149$3.0bnn.a.n.a.
Q4 20149$2.8bnn.a.n.a.
Q1 201510$2.3bnn.a.n.a.
Q2 201512$2.3bnn.a.n.a.
Q3 20158$2.1bnn.a.n.a.
Q4 201514$1.6bnn.a.n.a.
Q1 201612$906mn.a.n.a.
Q2 201614$623mn.a.n.a.
Q3 201612$601mn.a.n.a.
Q4 201618$1.2bnn.a.n.a.
Q1 201713$2.0bnn.a.n.a.
Q2 201718$2.1bnn.a.n.a.
Q3 201714$1.9bnn.a.n.a.
Q4 201716$2.5bnn.a.n.a.
Q1 201818$2.9bnn.a.n.a.
Q2 201820$3.0bnn.a.n.a.
Q3 201820$3.0bnn.a.n.a.
Q4 201816$2.0bnn.a.n.a.
Q1 201915$2.5bnn.a.n.a.
Q2 201913$2.6bnn.a.n.a.
Q3 201914$3.9bnn.a.n.a.
Q4 201915$4.2bnn.a.n.a.
Q1 202014$2.9bnn.a.n.a.
Q2 202016$4.0bnn.a.n.a.
Q3 202015$4.0bnn.a.n.a.
Q4 202014$5.3bnn.a.n.a.
Q1 202118$7.4bnn.a.n.a.
Q2 202126$7.3bnn.a.n.a.
Q3 202125$7.3bnn.a.n.a.
Q4 202125$9.0bnn.a.n.a.
Q1 202224$6.8bnn.a.n.a.
Q2 202217$6.3bnn.a.n.a.
Q3 202215$5.7bnn.a.n.a.
Q4 202214$6.6bnn.a.n.a.
Q1 202322$6.7bnn.a.n.a.
Q2 202322$8.3bnn.a.n.a.
Q3 202325$8.2bnn.a.n.a.
Q4 202323$10.0bn1013
Q1 202416$11.0bn613
Q2 202421$12.7bn147
Q3 202428$11.2bn1811
Q4 202425$8.0bn1116
Q1 202527$8.7bn1513
Q2 202522$12.2bn1112
Q3 202519$16.5bn1111
Q4 202525$23.4bn2214
Q1 202622$32.6bn2019
Q2 2026 (split)28$78.0bn64

Compare with…

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

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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 KLAC, latest filings →Back to the 13F Explorer →