Massachusetts Financial Services
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Massachusetts Financial Services’s Amkor Technology AMKR Stock Holding History

Massachusetts Financial Services’s Portfolio AMKR Stock Details AMKR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2015
Q2 		– Sell
-41,400
Closed -$366K – 882
2015
Q1 		$366K Buy
+41,400
New +$337K ﹤0.01% 853

Other funds holding AMKR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
EARNEST Partners
EARNEST Partners Atlanta, Georgia $27.7B AUM 52.44% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Massachusetts Financial Services's AMKR Position: Q2 2026 in Review

Massachusetts Financial Services reduced its Amkor Technology (AMKR) stake by 1.6% in Q2 2026, selling an estimated $408K and leaving 361,075 shares worth $31.1M. The position accounts for 0.01% of the portfolio, ranked #584.

Massachusetts Financial Services first reported a position in AMKR in Q4 2014 and has held it in 41 quarters since. 647 funds tracked by Wall St. Rank hold AMKR as of Q2 2026.

  • Massachusetts Financial Services held 361,075 shares of Amkor Technology worth $31.1M as of Q2 2026.
  • Massachusetts Financial Services sold 5,718 Amkor Technology shares in Q2 2026, an estimated $408K.
  • Amkor Technology made up 0.01% of Massachusetts Financial Services's portfolio in Q2 2026, its #584 holding.
  • Massachusetts Financial Services first reported a position in Amkor Technology in Q4 2014 and has held it in 41 quarters since.
  • 647 funds tracked by Wall St. Rank held Amkor Technology as of Q2 2026.

Based on Massachusetts Financial Services's 13F filing for Q2 2026, filed 3 Aug 2026.