Wellington Management Group
MPWR icon

Wellington Management Group’s Monolithic Power Systems MPWR Stock Holding History

Wellington Management Group’s Portfolio MPWR Stock Details MPWR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$274M Sell
250,511
-134,259
-35% -$147M 0.05% 309
2025
Q4 		$349M Sell
384,770
-68,168
-15% -$65.6M 0.06% 268
2025
Q3 		$417M Sell
452,938
-250,213
-36% -$203M 0.07% 235
2025
Q2 		$514M Sell
703,151
-58,755
-8% -$37.4M 0.09% 194
2025
Q1 		$442M Sell
761,906
-91,123
-11% -$57.4M 0.09% 203
2024
Q4 		$505M Sell
853,029
-251,196
-23% -$182M 0.09% 187
2024
Q3 		$1.02B Buy
1,104,225
+251
+0% +$217K 0.18% 127
2024
Q2 		$907M Buy
1,103,974
+150,337
+16% +$108M 0.16% 140
2024
Q1 		$646M Buy
953,637
+14,718
+2% +$9.83M 0.11% 185
2023
Q4 		$592M Buy
938,919
+85,676
+10% +$44.8M 0.11% 188
2023
Q3 		$394M Buy
853,243
+7,204
+0.9% +$3.68M 0.08% 243
2023
Q2 		$457M Buy
846,039
+506,010
+149% +$240M 0.09% 229
2023
Q1 		$170M Buy
340,029
+53,901
+19% +$24.8M 0.03% 429
2022
Q4 		$101M Buy
286,128
+86,983
+44% +$31.2M 0.02% 520
2022
Q3 		$72.4M Buy
199,145
+300
+0.2% +$133K 0.02% 592
2022
Q2 		$76.4M Sell
198,845
-620
-0.3% -$262K 0.02% 595
2022
Q1 		$96.9M Buy
199,465
+6,558
+3% +$2.86M 0.02% 586
2021
Q4 		$95.2M Sell
192,907
-5,152
-3% -$2.66M 0.02% 643
2021
Q3 		$96M Sell
198,059
-1,312
-0.7% -$597K 0.02% 637
2021
Q2 		$74.5M Sell
199,371
-98,376
-33% -$34.6M 0.01% 709
2021
Q1 		$105M Buy
297,747
+9,593
+3% +$3.49M 0.02% 602
2020
Q4 		$106M Sell
288,154
-1,129,254
-80% -$362M 0.02% 575
2020
Q3 		$396M Sell
1,417,408
-587,467
-29% -$153M 0.08% 221
2020
Q2 		$475M Sell
2,004,875
-65,380
-3% -$13.2M 0.11% 179
2020
Q1 		$347M Buy
2,070,255
+273,269
+15% +$46.8M 0.09% 201
2019
Q4 		$320M Buy
1,796,986
+35,586
+2% +$5.68M 0.07% 284
2019
Q3 		$274M Buy
1,761,400
+178,787
+11% +$26.7M 0.06% 298
2019
Q2 		$215M Buy
1,582,613
+75,413
+5% +$10.3M 0.05% 356
2019
Q1 		$204M Sell
1,507,200
-136,132
-8% -$17.9M 0.05% 358
2018
Q4 		$191M Buy
1,643,332
+636,230
+63% +$76.1M 0.05% 349
2018
Q3 		$126M Buy
1,007,102
+648,298
+181% +$90.4M 0.03% 512
2018
Q2 		$48M Buy
358,804
+189,824
+112% +$24.2M 0.01% 807
2018
Q1 		$19.6M Buy
168,980
+7,556
+5% +$896K ﹤0.01% 1082
2017
Q4 		$18.1M Buy
+161,424
New +$18.7M ﹤0.01% 1091
2017
Q3 		– Sell
-161,322
Closed -$15.6M – 2249
2017
Q2 		$15.6M Sell
161,322
-148,608
-48% -$14.2M ﹤0.01% 1110
2017
Q1 		$28.5M Sell
309,930
-97,501
-24% -$8.64M 0.01% 908
2016
Q4 		$33.4M Sell
407,431
-74,566
-15% -$5.99M 0.01% 841
2016
Q3 		$38.8M Buy
481,997
+62,515
+15% +$4.62M 0.01% 771
2016
Q2 		$28.7M Buy
419,482
+59,318
+16% +$3.88M 0.01% 830
2016
Q1 		$22.9M Sell
360,164
-11,934
-3% -$711K 0.01% 883
2015
Q4 		$23.7M Buy
372,098
+97,671
+36% +$6.06M 0.01% 910
2015
Q3 		$14.1M Sell
274,427
-211,726
-44% -$10.5M ﹤0.01% 1070
2015
Q2 		$24.7M Buy
486,153
+79,179
+19% +$4.19M 0.01% 947
2015
Q1 		$21.4M Buy
406,974
+161,152
+66% +$8.12M 0.01% 1021
2014
Q4 		$12.2M Sell
245,822
-65,830
-21% -$2.96M ﹤0.01% 1179
2014
Q3 		$13.7M Sell
311,652
-121,150
-28% -$5.33M ﹤0.01% 1138
2014
Q2 		$18.3M Buy
432,802
+56,965
+15% +$2.21M ﹤0.01% 1066
2014
Q1 		$14.6M Sell
375,837
-84,672
-18% -$2.99M ﹤0.01% 1133
2013
Q4 		$16M Buy
460,509
+34,620
+8% +$1.11M ﹤0.01% 1087
2013
Q3 		$12.9M Sell
425,889
-185,410
-30% -$5.21M ﹤0.01% 1139
2013
Q2 		$14.7M Buy
+611,299
New +$14.5M ﹤0.01% 1069

Other funds holding MPWR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

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

Wellington Management Group reduced its Monolithic Power Systems (MPWR) stake by 35% in Q1 2026, selling an estimated $147M and leaving 250,511 shares worth $274M. The position accounts for 0.05% of the portfolio, ranked #309.

Wellington Management Group first reported a position in MPWR in Q2 2013 and has held it in 51 quarters since. The position peaked at $1.02B in Q3 2024. 1,114 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

  • Wellington Management Group held 250,511 shares of Monolithic Power Systems worth $274M as of Q1 2026.
  • Wellington Management Group sold 134,259 Monolithic Power Systems shares in Q1 2026, an estimated $147M.
  • Monolithic Power Systems made up 0.05% of Wellington Management Group's portfolio in Q1 2026, its #309 holding.
  • Wellington Management Group first reported a position in Monolithic Power Systems in Q2 2013 and has held it in 51 quarters since.
  • Wellington Management Group's Monolithic Power Systems position peaked at $1.02B in Q3 2024.
  • 1,114 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

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