Vanguard Group’s Monolithic Power Systems MPWR Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2025
Q4
$5.47B Sell
6,034,394
-39,639
-0.7% -$38.1M 0.08% 236
2025
Q3
$5.59B Buy
6,074,033
+134,087
+2% +$109M 0.08% 224
2025
Q2
$4.34B Buy
5,939,946
+19,277
+0.3% +$12.3M 0.07% 276
2025
Q1
$3.43B Buy
5,920,669
+96,395
+2% +$60.7M 0.06% 313
2024
Q4
$3.45B Buy
5,824,274
+74,046
+1% +$53.6M 0.06% 315
2024
Q3
$5.32B Buy
5,750,228
+55,132
+1% +$47.6M 0.1% 189
2024
Q2
$4.68B Buy
5,695,096
+175,156
+3% +$126M 0.09% 201
2024
Q1
$3.74B Buy
5,519,940
+55,874
+1% +$37.3M 0.07% 274
2023
Q4
$3.45B Buy
5,464,066
+90,589
+2% +$47.3M 0.08% 271
2023
Q3
$2.48B Buy
5,373,477
+123,946
+2% +$63.4M 0.06% 331
2023
Q2
$2.84B Buy
5,249,531
+101,846
+2% +$48.4M 0.07% 316
2023
Q1
$2.58B Buy
5,147,685
+29,374
+0.6% +$13.5M 0.07% 322
2022
Q4
$1.81B Buy
5,118,311
+34,143
+0.7% +$12.3M 0.05% 408
2022
Q3
$1.85B Buy
5,084,168
+130,675
+3% +$58.1M 0.05% 380
2022
Q2
$1.9B Buy
4,953,493
+80,530
+2% +$34M 0.05% 382
2022
Q1
$2.37B Buy
4,872,963
+78,909
+2% +$34.4M 0.06% 370
2021
Q4
$2.37B Buy
4,794,054
+21,742
+0.5% +$11.2M 0.05% 383
2021
Q3
$2.31B Sell
4,772,312
-78,355
-2% -$35.6M 0.06% 366
2021
Q2
$1.81B Buy
4,850,667
+25,957
+0.5% +$9.14M 0.05% 459
2021
Q1
$1.7B Buy
4,824,710
+800,448
+20% +$292M 0.05% 443
2020
Q4
$1.47B Buy
4,024,262
+157,592
+4% +$50.5M 0.04% 458
2020
Q3
$1.08B Sell
3,866,670
-143,771
-4% -$37.4M 0.04% 496
2020
Q2
$950M Buy
4,010,441
+78,686
+2% +$15.9M 0.03% 517
2020
Q1
$658M Buy
3,931,755
+93,718
+2% +$16.1M 0.03% 565
2019
Q4
$683M Buy
3,838,037
+31,771
+0.8% +$5.07M 0.02% 675
2019
Q3
$592M Buy
3,806,266
+123,143
+3% +$18.4M 0.02% 712
2019
Q2
$500M Buy
3,683,123
+105,831
+3% +$14.4M 0.02% 796
2019
Q1
$485M Sell
3,577,292
-83,031
-2% -$10.9M 0.02% 798
2018
Q4
$426M Buy
3,660,323
+106,795
+3% +$12.8M 0.02% 784
2018
Q3
$446M Buy
3,553,528
+208,362
+6% +$29M 0.02% 849
2018
Q2
$447M Buy
3,345,166
+22,077
+0.7% +$2.81M 0.02% 835
2018
Q1
$385M Sell
3,323,089
-55,553
-2% -$6.58M 0.02% 882
2017
Q4
$380M Buy
3,378,642
+191,987
+6% +$22.3M 0.02% 897
2017
Q3
$340M Buy
3,186,655
+68,117
+2% +$6.92M 0.02% 935
2017
Q2
$301M Buy
3,118,538
+85,754
+3% +$8.17M 0.01% 976
2017
Q1
$279M Buy
3,032,784
+155,052
+5% +$13.7M 0.01% 1002
2016
Q4
$236M Buy
2,877,732
+104,052
+4% +$8.35M 0.01% 1067
2016
Q3
$223M Sell
2,773,680
-151,223
-5% -$11.2M 0.01% 1041
2016
Q2
$200M Buy
2,924,903
+105,377
+4% +$6.9M 0.01% 1063
2016
Q1
$179M Buy
2,819,526
+88,239
+3% +$5.26M 0.01% 1086
2015
Q4
$174M Buy
2,731,287
+52,108
+2% +$3.24M 0.01% 1099
2015
Q3
$137M Buy
2,679,179
+61,805
+2% +$3.06M 0.01% 1216
2015
Q2
$133M Buy
2,617,374
+98,661
+4% +$5.22M 0.01% 1345
2015
Q1
$133M Buy
2,518,713
+45,215
+2% +$2.28M 0.01% 1301
2014
Q4
$123M Buy
2,473,498
+26,498
+1% +$1.19M 0.01% 1270
2014
Q3
$108M Buy
2,447,000
+21,444
+0.9% +$943K 0.01% 1301
2014
Q2
$103M Buy
2,425,556
+125,821
+5% +$4.88M 0.01% 1378
2014
Q1
$89.2M Buy
2,299,735
+94,208
+4% +$3.32M 0.01% 1429
2013
Q4
$76.4M Buy
2,205,527
+120,655
+6% +$3.86M 0.01% 1497
2013
Q3
$63.1M Buy
2,084,872
+121,188
+6% +$3.4M 0.01% 1562
2013
Q2
$47.3M Buy
+1,963,684
New +$46.6M 0.01% 1665

Other funds holding MPWR

Vanguard Group's MPWR Position: Q4 2025 in Review

Vanguard Group reduced its Monolithic Power Systems (MPWR) stake by 0.65% in Q4 2025, selling an estimated $38.1M and leaving 6,034,394 shares worth $5.47B. The position accounts for 0.08% of the portfolio, ranked #236.

Vanguard Group first reported a position in MPWR in Q2 2013 and has held it in 51 quarters since. The position peaked at $5.59B in Q3 2025. 1,059 funds tracked by Wall St. Rank hold MPWR as of Q4 2025.

  • Vanguard Group held 6,034,394 shares of Monolithic Power Systems worth $5.47B as of Q4 2025.
  • Vanguard Group sold 39,639 Monolithic Power Systems shares in Q4 2025, an estimated $38.1M.
  • Monolithic Power Systems made up 0.08% of Vanguard Group's portfolio in Q4 2025, its #236 holding.
  • Vanguard Group first reported a position in Monolithic Power Systems in Q2 2013 and has held it in 51 quarters since.
  • Vanguard Group's Monolithic Power Systems position peaked at $5.59B in Q3 2025.
  • 1,059 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.