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ACLS in the 13F filings

Axcelis Technologies Inc · CUSIP 054540208

Sector · IndustrialsTheme · Industrials and automation· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
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
23
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 3 listed it in both
Shares listed
5,469,915
combined, among listed positions
Reported value
$509m
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: 11 buyers (opened or added shares) and 19 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,782,505.

Managers listing ACLS 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.

23 of 23 holders

ActionFiling
Fidelity (FMR LLC)2,431,121$226munder 0.1%Added+1,820,51815 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC1,364,540$127m0.16%Added+1,121,03715 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.544,421$51munder 0.1%Added+74,13615 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc362,202$34munder 0.1%Trimmed-20,85415 May 2026 (the filing on sec.gov)
Two Sigma Investments LP197,566$18munder 0.1%Added+126,32215 May 2026 (the filing on sec.gov)
Invesco Ltd165,075$15munder 0.1%Trimmed-313,82212 May 2026 (the filing on sec.gov)
First Eagle Investment Management LLC100,551$9.4munder 0.1%Trimmed-35,76714 May 2026 (the filing on sec.gov)
Holocene Advisors LP51,575$4.8munder 0.1%Added+35,89615 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC44,246$4.1munder 0.1%Trimmed-176,46715 May 2026 (the filing on sec.gov)
AQR Capital Management LLC40,015$3.7munder 0.1%Added+2,43415 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC33,291$3.1munder 0.1%Trimmed-120,41215 May 2026 (the filing on sec.gov)
AllianceBernstein LP34,489$2.8munder 0.1%Added+24315 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC17,935$1.7munder 0.1%Trimmed-3,24715 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd14,628$1.4munder 0.1%Trimmed-27,14818 May 2026 (the filing on sec.gov)
Winton Group Ltd14,151$1.3munder 0.1%Trimmed-57312 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP12,776$1.2munder 0.1%Trimmed-6,96215 May 2026 (the filing on sec.gov)
Millennium Management LLC12,532$1.2munder 0.1%Trimmed-117,55815 May 2026 (the filing on sec.gov)
Bridgewater Associates LP8,301$773kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP7,017$653kunder 0.1%Added+2815 May 2026 (the filing on sec.gov)
Citadel Advisors LLC4,505$419kunder 0.1%Trimmed-171,54215 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP3,784$352kunder 0.1%Trimmed-89415 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC2,944$274kunder 0.1%Added+22927 Oct 2026 (the filing on sec.gov)
Point72 Asset Management LP2,250$209kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)

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.

New (2)

Exited (7)

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.
4 in Q3 2024 to 5 in Q2 2026

Tracked managers listing it, at least.

035810201720182020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ACLS by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20171$1.3mn.a.n.a.
Q2 20171$3.7mn.a.n.a.
Q3 20171$4.8mn.a.n.a.
Q4 20172$8.8mn.a.n.a.
Q1 20181$1.0mn.a.n.a.
Q3 20191$483kn.a.n.a.
Q4 20191$680kn.a.n.a.
Q1 20201$337kn.a.n.a.
Q3 20201$4.0mn.a.n.a.
Q4 20201$891kn.a.n.a.
Q1 20211$1.2mn.a.n.a.
Q2 20211$1.2mn.a.n.a.
Q3 20212$2.6mn.a.n.a.
Q4 20215$11mn.a.n.a.
Q1 20222$9.7mn.a.n.a.
Q2 20223$22mn.a.n.a.
Q3 20224$26mn.a.n.a.
Q4 20225$34mn.a.n.a.
Q1 20239$257mn.a.n.a.
Q2 20236$231mn.a.n.a.
Q3 20236$197mn.a.n.a.
Q4 20238$86m73
Q1 20246$71m42
Q2 20247$64m52
Q3 20244$18m40
Q4 20244$25m40
Q1 20255$40m50
Q2 20254$33m14
Q3 20252$14m11
Q4 20253$30m1815
Q1 20264$142m1119
Q2 20265$914m2012

Compare with…

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

ACLS and GE →ACLS and LRCX →ACLS and GEV →Choose a stock to compare with ACLS →

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