Massachusetts Financial Services
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Massachusetts Financial Services’s Seagate STX Stock Holding History

Massachusetts Financial Services’s Portfolio STX Stock Details STX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$2.51B Buy
2,560,276
+24,154
+1% +$18.4M 0.8% 19
2026
Q1 		$1.01B Buy
2,536,122
+527,606
+26% +$201M 0.34% 83
2025
Q4 		$553M Buy
2,008,516
+1,883,769
+1,510% +$489M 0.18% 129
2025
Q3 		$29.4M Buy
+124,747
New +$21.3M 0.01% 571
2024
Q1 		– Sell
-2,020,707
Closed -$173M – 879
2023
Q4 		$173M Sell
2,020,707
-389,456
-16% -$29.1M 0.06% 288
2023
Q3 		$159M Buy
2,410,163
+470,592
+24% +$30.3M 0.06% 273
2023
Q2 		$120M Sell
1,939,571
-94,333
-5% -$5.76M 0.04% 336
2023
Q1 		$134M Buy
2,033,904
+15,012
+0.7% +$956K 0.05% 317
2022
Q4 		$106M Buy
2,018,892
+915,847
+83% +$48.7M 0.04% 347
2022
Q3 		$58.7M Buy
+1,103,045
New +$79.7M 0.02% 417
2019
Q3 		– Sell
-198,993
Closed -$9.38M – 854
2019
Q2 		$9.38M Sell
198,993
-3,909
-2% -$182K ﹤0.01% 630
2019
Q1 		$9.72M Buy
202,902
+1,168
+0.6% +$51.8K ﹤0.01% 615
2018
Q4 		$7.79M Sell
201,734
-5,517
-3% -$232K ﹤0.01% 629
2018
Q3 		$9.81M Sell
207,251
-14,828
-7% -$792K ﹤0.01% 628
2018
Q2 		$12.5M Buy
+222,079
New +$12.8M 0.01% 599
2017
Q4 		– Sell
-223,752
Closed -$7.42M – 870
2017
Q3 		$7.42M Sell
223,752
-912
-0.4% -$31K ﹤0.01% 632
2017
Q2 		$8.71M Sell
224,664
-2,826
-1% -$123K ﹤0.01% 625
2017
Q1 		$10.4M Buy
227,490
+107
+0% +$4.75K ﹤0.01% 584
2016
Q4 		$8.68M Buy
+227,383
New +$8.49M ﹤0.01% 610
2016
Q2 		– Sell
-292,654
Closed -$10.1M – 873
2016
Q1 		$10.1M Buy
292,654
+229
+0.1% +$7.38K 0.01% 579
2015
Q4 		$10.7M Sell
292,425
-5,051
-2% -$192K 0.01% 586
2015
Q3 		$13.3M Buy
297,476
+12,800
+4% +$619K 0.01% 559
2015
Q2 		$13.5M Buy
+284,676
New +$15.7M 0.01% 575

Other funds holding STX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
WCM Investment Management
WCM Investment Management Laguna Beach, California $55.2B AUM 57.07% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

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

Massachusetts Financial Services increased its Seagate (STX) stake by 0.95% in Q2 2026, buying an estimated $18.4M and bringing the position to 2,560,276 shares worth $2.51B. The position accounts for 0.8% of the portfolio, ranked #19.

Massachusetts Financial Services first reported a position in STX in Q2 2015 and has held it in 23 quarters since. 1,960 funds tracked by Wall St. Rank hold STX as of Q2 2026.

  • Massachusetts Financial Services held 2,560,276 shares of Seagate worth $2.51B as of Q2 2026.
  • Massachusetts Financial Services bought 24,154 Seagate shares in Q2 2026, an estimated $18.4M.
  • Seagate made up 0.8% of Massachusetts Financial Services's portfolio in Q2 2026, its #19 holding.
  • Massachusetts Financial Services first reported a position in Seagate in Q2 2015 and has held it in 23 quarters since.
  • 1,960 funds tracked by Wall St. Rank held Seagate as of Q2 2026.

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