AMKR Amkor Technology, Inc.

NASDAQ
$51.73

Amkor Technology, Inc. (AMKR) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
-29.17
17 buyers / 31 sellers
STRONG SELLING
Funds compared
48
funds with comparable AMKR positions
38 current holders · 39 prior-quarter holders
Net share change
-4.33M
+3.27M added, -7.60M cut
Position activity
9 new 8 increased 21 reduced 10 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Bridgewater Associates Quant Macro Reduced -1.57M -99.5% $135.7M 0.0% 65
RENAISSANCE TECHNOLOGIES LLC Quant New +580.6K — $50.1M 0.1% 65
Farallon Capital Management Event Value Sold Out -104.0K -100.0% $9.0M 0.0% 62
CITADEL ADVISORS LLC Quant Increased +832.3K +425.0% $71.8M 0.1% 58
Capula Management Quant Macro New +36.7K — $3.2M 0.0% 58
Holocene Advisors, LP Sold Out -16.0K -100.0% $1.4M 0.0% 58
Maverick Capital Long/Short Growth New +8.9K — $764.0K 0.0% 57
MARSHALL WACE, LLP Long/Short Sold Out -6.2K -100.0% $536.8K 0.0% 56
Aristeia Capital Event Long/Short Increased +182.7K +1388.6% $15.8M 0.9% 56
Verition Fund Management Event Long/Short Sold Out -20.7K -100.0% $1.8M 0.0% 56

Most significant buyers

By move score, not size.

  • RENAISSANCE TECHNOLOGIES LLC New · +580.6K
  • CITADEL ADVISORS LLC Increased · +832.3K
  • Capula Management New · +36.7K
  • Maverick Capital New · +8.9K
  • Aristeia Capital Increased · +182.7K

Most significant sellers

By move score, not size.

  • Bridgewater Associates Reduced · -1.57M
  • Farallon Capital Management Sold Out · -104.0K
  • Holocene Advisors, LP Sold Out · -16.0K
  • MARSHALL WACE, LLP Sold Out · -6.2K
  • Verition Fund Management Sold Out · -20.7K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Bridgewater Associates 1 7.1K 1.6M -1.57M -99.5% 0.0% Reduced 65
RENAISSANCE TECHNOLOGIES LLC 1 580.6K 0 +580.6K — 0.1% New 65
Farallon Capital Management 1 0 104.0K -104.0K -100.0% 0.0% Sold Out 62
CITADEL ADVISORS LLC 1 1.0M 195.8K +832.3K +425.0% 0.1% Increased 58
Capula Management 2 36.7K 0 +36.7K — 0.0% New 58
Holocene Advisors, LP 2 0 16.0K -16.0K -100.0% 0.0% Sold Out 58
Maverick Capital 2 8.9K 0 +8.9K — 0.0% New 57
MARSHALL WACE, LLP 2 0 6.2K -6.2K -100.0% 0.0% Sold Out 56
Aristeia Capital 2 195.9K 13.2K +182.7K +1388.6% 0.9% Increased 56
Verition Fund Management 2 0 20.7K -20.7K -100.0% 0.0% Sold Out 56
Qube Research & Technologies Ltd 2 1.2M 362.1K +799.3K +220.7% 0.1% Increased 56
Magnetar Capital 2 3.6K 0 +3.6K — 0.0% New 54
WORLDQUANT MILLENNIUM ADVISORS LLC 2 322.7K 32.9K +289.8K +881.9% 0.1% Increased 54
Hudson Bay Capital Management 3 9.5K 0 +9.5K — 0.0% New 53
Walleye Capital 3 66.1K 0 +66.1K — 0.0% New 53
Aquatic Capital Management 4 0 134.4K -134.4K -100.0% 0.0% Sold Out 53
Capstone Investment Advisors 3 0 10.9K -10.9K -100.0% 0.0% Sold Out 53
Caxton Associates 3 0 4.9K -4.9K -100.0% 0.0% Sold Out 53
Readystate Asset Management 3 34.8K 0 +34.8K — 0.2% New 52
Capital Fund Management 3 222.0K 28.3K +193.6K +683.5% 0.1% Increased 51
Edgestream Partners 4 0 51.7K -51.7K -100.0% 0.0% Sold Out 51
Alphadyne Asset Management 3 0 615 -615 -100.0% 0.0% Sold Out 51
Schonfeld Strategic Advisors 3 3.0K 0 +3.0K — 0.0% New 51
CastleKnight Management 3 4.4K 251.2K -246.8K -98.2% 0.0% Reduced 50
Caption Management 3 0 3.9K -3.9K -100.0% 0.0% Sold Out 50
ExodusPoint Capital Management 3 6.0K 186.5K -180.4K -96.8% 0.0% Reduced 50
Squarepoint Ops LLC 2 209.9K 966.8K -756.9K -78.3% 0.0% Reduced 50
Graham Capital Management 3 4.6K 0 +4.6K — 0.0% New 49
Weiss Asset Management 2 57.7K 300.0K -242.3K -80.8% 0.1% Reduced 49
Brevan Howard Capital Management 3 174.5K 22.6K +151.9K +671.7% 0.3% Increased 49
Voloridge Investment Management 2 243.1K 1.1M -818.7K -77.1% 0.1% Reduced 49
D. E. Shaw & Co., Inc. 1 624.9K 1.5M -863.9K -58.0% 0.0% Reduced 48
Voleon Capital Management 3 71.9K 23.1K +48.8K +210.7% 0.1% Increased 47
Rokos Capital Management 2 34.5K 142.7K -108.2K -75.8% 0.1% Reduced 47
Trexquant Investment 3 269.6K 1.1M -796.6K -74.7% 0.1% Reduced 46
Boothbay Fund Management 4 28.1K 7.2K +20.9K +290.7% 0.1% Increased 45
Tudor Investment Corporation 2 106.7K 300.9K -194.2K -64.5% 0.0% Reduced 43
Point72 Asset Management, L.P. 1 2.5M 3.0M -516.1K -17.2% 0.3% Reduced 38
Y-Intercept 4 30.9K 115.9K -85.0K -73.3% 0.1% Reduced 38
Engineers Gate 4 38.0K 148.6K -110.6K -74.5% 0.0% Reduced 38
MILLENNIUM MANAGEMENT LLC 2 622.3K 773.2K -151.0K -19.5% 0.0% Reduced 35
Gotham Asset Management, LLC 2 816.2K 1.1M -257.1K -24.0% 0.2% Reduced 34
Man Group 3 304.2K 469.3K -165.2K -35.2% 0.0% Reduced 34
TWO SIGMA INVESTMENTS, LP 2 1.1M 1.2M -144.8K -11.9% 0.1% Reduced 33
Wolverine Asset Management 2 9.3K 15.3K -6.0K -39.3% 0.1% Reduced 33
Quadrature Capital 3 39.9K 54.7K -14.9K -27.2% 0.0% Reduced 30
AQR Capital Management 3 3.2M 3.2M -10.6K -0.3% 0.1% Reduced 20
Quantbot Technologies 4 15.2K 17.8K -2.7K -15.0% 0.1% Reduced 18

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.