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ASYS in the 13F filings

Amtech Sys Inc · CUSIP 032332504

Sector · IndustrialsTheme · Industrials and automation· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
17 Feb 2026
latest of these filings; the earliest 4 Feb 2026
Managers listing it
15
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 1 listed it in both
Shares listed
2,658,828
combined, among listed positions
Reported value
$33m
combined, at the quarter end

Among the 92 comparable managers: 13 buyers (opened or added shares) and 3 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,210,525.

Managers listing ASYS in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

15 of 15 holders

ActionFiling
First Eagle Investment Management LLC734,346$9.2munder 0.1%Trimmed-18,0004 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP352,624$4.4munder 0.1%Added+247,35213 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP347,033$4.4munder 0.1%Added+164,60413 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC325,754$4.1munder 0.1%Added+150,33212 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC236,008$3.0munder 0.1%Added+152,47610 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC146,596$1.8munder 0.1%Added+126,29612 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC124,843$1.6munder 0.1%Added+46,38917 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP111,437$1.4munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP80,630$1.0munder 0.1%Added+60,69317 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP69,997$878kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP68,154$855kunder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Millennium Management LLC22,748$285kunder 0.1%Added+10,80217 Feb 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP21,553$270kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC16,677$209kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)428$5kunder 0.1%Trimmed-23717 Feb 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, 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 (5)

Exited (1)

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.
1 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

00111201820222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ASYS by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20171$225kn.a.n.a.
Q3 20171$715kn.a.n.a.
Q4 20171$1.1mn.a.n.a.
Q1 20181$542kn.a.n.a.
Q2 20211$68kn.a.n.a.
Q3 20211$187kn.a.n.a.
Q4 20211$117kn.a.n.a.
Q1 20221$477kn.a.n.a.
Q2 20221$1.2mn.a.n.a.
Q3 20221$1.7mn.a.n.a.
Q4 20221$2.3mn.a.n.a.
Q1 20231$3.2mn.a.n.a.
Q2 20231$3.9mn.a.n.a.
Q3 20231$4.4mn.a.n.a.
Q4 20231$2.4m10
Q1 20241$3.2m10
Q2 20241$4.0m10
Q3 20241$4.5m10
Q4 20241$4.5m10
Q1 20251$4.1m10
Q2 20251$3.6m01
Q3 20251$7.0m01
Q4 20251$9.2m133
Q1 20261$9.7m144
Q2 20261$20m1211

Compare with…

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

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

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