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O'Shaughnessy Asset Management’s Monolithic Power Systems MPWR Stock Holding History

O'Shaughnessy Asset Management’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
Q2 		$9.36M Sell
6,770
-1,644
-20% -$2.47M 0.04% 402
2026
Q1 		$9.2M Buy
8,414
+2,726
+48% +$2.98M 0.05% 395
2025
Q4 		$5.16M Buy
5,688
+1,006
+21% +$968K 0.03% 506
2025
Q3 		$4.31M Buy
4,682
+877
+23% +$711K 0.03% 562
2025
Q2 		$2.78M Buy
3,805
+688
+22% +$438K 0.02% 659
2025
Q1 		$1.81M Buy
3,117
+818
+36% +$515K 0.01% 725
2024
Q4 		$1.36M Sell
2,299
-272
-11% -$197K 0.01% 817
2024
Q3 		$2.42M Buy
2,571
+514
+25% +$444K 0.02% 586
2024
Q2 		$1.69M Buy
2,057
+428
+26% +$309K 0.02% 657
2024
Q1 		$1.1M Buy
1,629
+561
+53% +$375K 0.01% 793
2023
Q4 		$674K Buy
1,068
+435
+69% +$227K 0.01% 890
2023
Q3 		$292K Buy
633
+117
+23% +$59.8K ﹤0.01% 1134
2023
Q2 		$279K Buy
+516
New +$245K ﹤0.01% 1080
2022
Q4 		– Sell
-671
Closed -$244K – 1441
2022
Q3 		$244K Sell
671
-388
-37% -$173K ﹤0.01% 1008
2022
Q2 		$407K Sell
1,059
-260
-20% -$110K 0.01% 758
2022
Q1 		$641K Buy
1,319
+403
+44% +$176K 0.01% 659
2021
Q4 		$452K Buy
916
+27
+3% +$13.9K 0.01% 732
2021
Q3 		$431K Buy
889
+246
+38% +$112K 0.01% 707
2021
Q2 		$240K Buy
643
+193
+43% +$67.9K ﹤0.01% 943
2021
Q1 		$159K Sell
450
-5
-1% -$1.82K ﹤0.01% 1018
2020
Q4 		$167K Buy
455
+388
+579% +$124K ﹤0.01% 895
2020
Q3 		$19K Buy
67
+59
+738% +$15.4K ﹤0.01% 1261
2020
Q2 		$2K Buy
+8
New +$1.62K ﹤0.01% 1507

Other funds holding MPWR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

O'Shaughnessy Asset Management's MPWR Position: Q2 2026 in Review

O'Shaughnessy Asset Management reduced its Monolithic Power Systems (MPWR) stake by 20% in Q2 2026, selling an estimated $2.47M and leaving 6,770 shares worth $9.36M. The position accounts for 0.04% of the portfolio, ranked #402.

O'Shaughnessy Asset Management first reported a position in MPWR in Q2 2020 and has held it in 23 quarters since. 1,246 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • O'Shaughnessy Asset Management held 6,770 shares of Monolithic Power Systems worth $9.36M as of Q2 2026.
  • O'Shaughnessy Asset Management sold 1,644 Monolithic Power Systems shares in Q2 2026, an estimated $2.47M.
  • Monolithic Power Systems made up 0.04% of O'Shaughnessy Asset Management's portfolio in Q2 2026, its #402 holding.
  • O'Shaughnessy Asset Management first reported a position in Monolithic Power Systems in Q2 2020 and has held it in 23 quarters since.
  • 1,246 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.