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 $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
EARNEST Partners
EARNEST Partners Atlanta, Georgia $24.3B AUM 34.41% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Massachusetts Financial Services's AMKR Position: Q1 2026 in Review

Massachusetts Financial Services reduced its Amkor Technology (AMKR) stake by 4.1% in Q1 2026, selling an estimated $745K and leaving 366,793 shares worth $16.5M. The position accounts for 0.01% of the portfolio, ranked #673.

Massachusetts Financial Services first reported a position in AMKR in Q4 2014 and has held it in 40 quarters since. 528 funds tracked by Wall St. Rank hold AMKR as of Q1 2026.

  • Massachusetts Financial Services held 366,793 shares of Amkor Technology worth $16.5M as of Q1 2026.
  • Massachusetts Financial Services sold 15,548 Amkor Technology shares in Q1 2026, an estimated $745K.
  • Amkor Technology made up 0.01% of Massachusetts Financial Services's portfolio in Q1 2026, its #673 holding.
  • Massachusetts Financial Services first reported a position in Amkor Technology in Q4 2014 and has held it in 40 quarters since.
  • 528 funds tracked by Wall St. Rank held Amkor Technology as of Q1 2026.

Based on Massachusetts Financial Services's 13F filing for Q1 2026, filed 14 May 2026.