Wellington Management Group
MKSI icon

Wellington Management Group’s MKS Inc MKSI Stock Holding History

Wellington Management Group’s Portfolio MKSI Stock Details MKSI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$421M Sell
1,833,137
-718,884
-28% -$163M 0.08% 226
2025
Q4 		$408M Sell
2,552,021
-461,774
-15% -$68.5M 0.07% 236
2025
Q3 		$373M Buy
3,013,795
+14,341
+0.5% +$1.53M 0.07% 257
2025
Q2 		$298M Sell
2,999,454
-250,631
-8% -$20.4M 0.05% 271
2025
Q1 		$260M Buy
3,250,085
+958,607
+42% +$96.8M 0.05% 284
2024
Q4 		$239M Buy
2,291,478
+6,715
+0.3% +$725K 0.04% 328
2024
Q3 		$248M Sell
2,284,763
-1,257,169
-35% -$149M 0.04% 345
2024
Q2 		$463M Buy
3,541,932
+174,853
+5% +$22.1M 0.08% 223
2024
Q1 		$448M Buy
3,367,079
+789,789
+31% +$91.8M 0.08% 241
2023
Q4 		$265M Sell
2,577,290
-124,959
-5% -$10.1M 0.05% 340
2023
Q3 		$234M Sell
2,702,249
-35,004
-1% -$3.41M 0.05% 334
2023
Q2 		$296M Buy
2,737,253
+1,036,541
+61% +$94.9M 0.06% 308
2023
Q1 		$151M Sell
1,700,712
-197,526
-10% -$18.9M 0.03% 450
2022
Q4 		$161M Sell
1,898,238
-587,191
-24% -$47.1M 0.03% 429
2022
Q3 		$205M Sell
2,485,429
-655,858
-21% -$67.5M 0.04% 368
2022
Q2 		$322M Sell
3,141,287
-1,500,875
-32% -$175M 0.06% 267
2022
Q1 		$696M Buy
4,642,162
+241,134
+5% +$37.5M 0.12% 176
2021
Q4 		$767M Sell
4,401,028
-281,936
-6% -$44.1M 0.12% 173
2021
Q3 		$707M Sell
4,682,964
-193,450
-4% -$29.7M 0.12% 175
2021
Q2 		$868M Sell
4,876,414
-459,435
-9% -$83.5M 0.14% 147
2021
Q1 		$989M Buy
5,335,849
+279,065
+6% +$46.9M 0.17% 126
2020
Q4 		$761M Buy
5,056,784
+291,792
+6% +$38.2M 0.14% 155
2020
Q3 		$520M Buy
4,764,992
+4,540
+0.1% +$532K 0.11% 178
2020
Q2 		$539M Buy
4,760,452
+105,800
+2% +$10.5M 0.12% 167
2020
Q1 		$379M Buy
4,654,652
+822,332
+21% +$84.1M 0.1% 190
2019
Q4 		$422M Buy
3,832,320
+94,527
+3% +$9.9M 0.09% 216
2019
Q3 		$345M Buy
3,737,793
+828,328
+28% +$68.4M 0.08% 252
2019
Q2 		$227M Sell
2,909,465
-44,094
-1% -$3.73M 0.05% 344
2019
Q1 		$275M Buy
2,953,559
+542,476
+22% +$43.7M 0.06% 295
2018
Q4 		$156M Buy
2,411,083
+98,539
+4% +$7.12M 0.04% 391
2018
Q3 		$185M Sell
2,312,544
-321,922
-12% -$29.4M 0.04% 405
2018
Q2 		$252M Sell
2,634,466
-30,691
-1% -$3.35M 0.06% 319
2018
Q1 		$308M Sell
2,665,157
-123,624
-4% -$13.6M 0.07% 284
2017
Q4 		$264M Sell
2,788,781
-72,616
-3% -$7.24M 0.06% 312
2017
Q3 		$270M Sell
2,861,397
-1,203,309
-30% -$98.4M 0.06% 289
2017
Q2 		$274M Sell
4,064,706
-1,202,951
-23% -$91.1M 0.06% 277
2017
Q1 		$362M Sell
5,267,657
-73,341
-1% -$4.83M 0.09% 224
2016
Q4 		$317M Buy
5,340,998
+962,364
+22% +$51.9M 0.08% 235
2016
Q3 		$218M Buy
4,378,634
+1,516,234
+53% +$71.5M 0.05% 304
2016
Q2 		$123M Buy
2,862,400
+885,767
+45% +$34.4M 0.03% 416
2016
Q1 		$74.4M Buy
1,976,633
+378,100
+24% +$12.9M 0.02% 553
2015
Q4 		$57.5M Buy
1,598,533
+291,734
+22% +$10.4M 0.02% 638
2015
Q3 		$43.8M Buy
1,306,799
+161,665
+14% +$5.62M 0.01% 715
2015
Q2 		$43.4M Buy
1,145,134
+418,805
+58% +$15.3M 0.01% 772
2015
Q1 		$24.6M Sell
726,329
-6,055
-0.8% -$213K 0.01% 976
2014
Q4 		$26.8M Buy
732,384
+125,815
+21% +$4.45M 0.01% 945
2014
Q3 		$20.2M Buy
606,569
+551,838
+1,008% +$18.1M 0.01% 1011
2014
Q2 		$1.71M Buy
+54,731
New +$1.59M ﹤0.01% 1706

Other funds holding MKSI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return

Wellington Management Group's MKSI Position: Q1 2026 in Review

Wellington Management Group reduced its MKS Inc (MKSI) stake by 28% in Q1 2026, selling an estimated $163M and leaving 1,833,137 shares worth $421M. The position accounts for 0.08% of the portfolio, ranked #226.

Wellington Management Group first reported a position in MKSI in Q2 2014 and has held it in 48 quarters since. The position peaked at $989M in Q1 2021. 615 funds tracked by Wall St. Rank hold MKSI as of Q1 2026.

  • Wellington Management Group held 1,833,137 shares of MKS Inc worth $421M as of Q1 2026.
  • Wellington Management Group sold 718,884 MKS Inc shares in Q1 2026, an estimated $163M.
  • MKS Inc made up 0.08% of Wellington Management Group's portfolio in Q1 2026, its #226 holding.
  • Wellington Management Group first reported a position in MKS Inc in Q2 2014 and has held it in 48 quarters since.
  • Wellington Management Group's MKS Inc position peaked at $989M in Q1 2021.
  • 615 funds tracked by Wall St. Rank held MKS Inc as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.