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AMKR in the 13F filings

Amkor Technology Inc · CUSIP 031652100

Sector · SemiconductorsTheme · AI infrastructure and semiconductors· L3VLUP-definedTheme · Semiconductors
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
34
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 5 listed it in both
Shares listed
22,065,290
combined, among listed positions
Reported value
$987m
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: 22 buyers (opened or added shares) and 16 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +5,641,987.

Managers listing AMKR 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.

34 of 34 holders

ActionFiling
AQR Capital Management LLC3,242,130$141m0.06%Trimmed-57,84515 May 2026 (the filing on sec.gov)
Point72 Asset Management LP2,993,434$135m0.17%Trimmed-70,66715 May 2026 (the filing on sec.gov)
Jane Street Group LLC2,329,820$105munder 0.1%Added+2,266,47712 May 2026 (the filing on sec.gov)
Invesco Ltd1,889,405$85munder 0.1%Added+773,81712 May 2026 (the filing on sec.gov)
Bridgewater Associates LP1,580,929$71m0.32%Added+1,504,79015 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,488,765$67munder 0.1%Added+1,333,97915 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,213,894$55munder 0.1%Added+661,11215 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC1,061,839$48m0.19%Newnew15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC966,791$44m0.05%Newnew15 May 2026 (the filing on sec.gov)
Millennium Management LLC773,243$35munder 0.1%Added+537,09115 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc746,424$34munder 0.1%Added+615,45415 May 2026 (the filing on sec.gov)
Man Group PLC469,338$21munder 0.1%Added+437,35415 May 2026 (the filing on sec.gov)
Light Street Capital Management LLC406,990$18m3.43%Added+119,09515 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC394,264$18munder 0.1%Added+204,16113 May 2026 (the filing on sec.gov)
MFS Investment Management366,793$17munder 0.1%Trimmed-15,54814 May 2026 (the filing on sec.gov)
Wellington Management Group LLP309,134$14munder 0.1%Trimmed-129,95215 May 2026 (the filing on sec.gov)
AllianceBernstein LP350,306$14munder 0.1%Trimmed-40,23415 May 2026 (the filing on sec.gov)
Tudor Investment Corp300,870$14munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)257,464$12munder 0.1%Trimmed-35,00315 May 2026 (the filing on sec.gov)
Citadel Advisors LLC195,841$8.8munder 0.1%Trimmed-736,87015 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP186,465$8.4m0.07%Added+76,14014 May 2026 (the filing on sec.gov)
Rokos Capital Management LLP142,698$6.4munder 0.1%Trimmed-82,27415 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP132,059$5.9munder 0.1%Added+60,55515 May 2026 (the filing on sec.gov)
Farallon Capital Management LLC104,000$4.7munder 0.1%Trimmed-360,00015 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd53,023$2.4munder 0.1%Trimmed-5,30018 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.

New (7)

Exited (4)

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.
5 in Q3 2024 to 10 in Q2 2026

Tracked managers listing it, at least.

0510152014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
AMKR by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20131$521kn.a.n.a.
Q4 20131$852kn.a.n.a.
Q1 20141$8.0mn.a.n.a.
Q2 20144$150mn.a.n.a.
Q3 20144$89mn.a.n.a.
Q4 20143$52mn.a.n.a.
Q1 20152$57mn.a.n.a.
Q2 20152$37mn.a.n.a.
Q3 20152$12mn.a.n.a.
Q4 20151$5.3mn.a.n.a.
Q1 20161$3.7mn.a.n.a.
Q3 20161$38mn.a.n.a.
Q4 20164$79mn.a.n.a.
Q1 20176$109mn.a.n.a.
Q2 20172$33mn.a.n.a.
Q3 20172$31mn.a.n.a.
Q4 20171$388kn.a.n.a.
Q1 20182$732kn.a.n.a.
Q4 20182$952kn.a.n.a.
Q1 20191$18mn.a.n.a.
Q2 20191$315kn.a.n.a.
Q3 20192$18mn.a.n.a.
Q4 20195$42mn.a.n.a.
Q1 20202$17mn.a.n.a.
Q2 20203$39mn.a.n.a.
Q3 20204$31mn.a.n.a.
Q4 20203$46mn.a.n.a.
Q1 20212$42mn.a.n.a.
Q2 20212$144kn.a.n.a.
Q3 20214$53mn.a.n.a.
Q4 20214$37mn.a.n.a.
Q1 20224$53mn.a.n.a.
Q2 20224$53mn.a.n.a.
Q3 20223$38mn.a.n.a.
Q4 20224$61mn.a.n.a.
Q1 20236$100mn.a.n.a.
Q2 20238$210mn.a.n.a.
Q3 202311$195mn.a.n.a.
Q4 20238$293m56
Q1 202410$268m82
Q2 20249$345m65
Q3 20245$217m50
Q4 20245$179m23
Q1 20257$80m62
Q2 20254$100m33
Q3 20255$174m32
Q4 20256$393m2015
Q1 202612$570m2216
Q2 202610$747m1425

Compare with…

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

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

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