Acadian Asset Management
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Acadian Asset Management’s Monolithic Power Systems MPWR Stock Holding History

Acadian 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 		$8.21M Buy
5,946
+4,401
+285% +$6.61M 0.01% 659
2026
Q1 		$1.69M Buy
1,545
+934
+153% +$1.02M ﹤0.01% 1008
2025
Q4 		$552K Sell
611
-17,112
-97% -$16.5M ﹤0.01% 1279
2025
Q3 		$16.3M Buy
17,723
+8,852
+100% +$7.18M 0.03% 367
2025
Q2 		$6.48M Buy
8,871
+1,242
+16% +$791K 0.01% 523
2025
Q1 		$4.42M Buy
7,629
+140
+2% +$88.2K 0.01% 534
2024
Q4 		$4.42M Sell
7,489
-941
-11% -$681K 0.01% 554
2024
Q3 		$7.79M Buy
8,430
+2,666
+46% +$2.3M 0.02% 385
2024
Q2 		$4.73M Buy
5,764
+4,236
+277% +$3.06M 0.01% 512
2024
Q1 		$1.03M Buy
1,528
+1,057
+224% +$706K ﹤0.01% 829
2023
Q4 		$296K Buy
471
+364
+340% +$190K ﹤0.01% 1150
2023
Q3 		$49K Sell
107
-44
-29% -$22.5K ﹤0.01% 1433
2023
Q2 		$80K Sell
151
-9,126
-98% -$4.34M ﹤0.01% 1448
2023
Q1 		$4.64M Sell
9,277
-25,675
-73% -$11.8M 0.02% 474
2022
Q4 		$12.3M Sell
34,952
-24,334
-41% -$8.74M 0.06% 244
2022
Q3 		$21.5M Buy
59,286
+37,915
+177% +$16.9M 0.12% 170
2022
Q2 		$8.21M Buy
21,371
+15,568
+268% +$6.58M 0.04% 312
2022
Q1 		$2.81M Sell
5,803
-4,657
-45% -$2.03M 0.01% 584
2021
Q4 		$5.16M Sell
10,460
-2,920
-22% -$1.51M 0.02% 446
2021
Q3 		$6.48M Buy
13,380
+10,927
+445% +$4.97M 0.02% 399
2021
Q2 		$917K Sell
2,453
-36,146
-94% -$12.7M ﹤0.01% 947
2021
Q1 		$13.6M Buy
38,599
+36,610
+1,841% +$13.3M 0.05% 280
2020
Q4 		$728K Buy
1,989
+511
+35% +$164K ﹤0.01% 1092
2020
Q3 		$413K Buy
1,478
+753
+104% +$196K ﹤0.01% 1195
2020
Q2 		$171K Buy
+725
New +$147K ﹤0.01% 1544

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

Acadian Asset Management's MPWR Position: Q2 2026 in Review

Acadian Asset Management increased its Monolithic Power Systems (MPWR) stake by 285% in Q2 2026, buying an estimated $6.61M and bringing the position to 5,946 shares worth $8.21M. The position accounts for 0.01% of the portfolio, ranked #659.

Acadian Asset Management first reported a position in MPWR in Q2 2020 and has held it in 25 quarters since. The position peaked at $21.5M in Q3 2022. 1,246 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Acadian Asset Management held 5,946 shares of Monolithic Power Systems worth $8.21M as of Q2 2026.
  • Acadian Asset Management bought 4,401 Monolithic Power Systems shares in Q2 2026, an estimated $6.61M.
  • Monolithic Power Systems made up 0.01% of Acadian Asset Management's portfolio in Q2 2026, its #659 holding.
  • Acadian Asset Management first reported a position in Monolithic Power Systems in Q2 2020 and has held it in 25 quarters since.
  • Acadian Asset Management's Monolithic Power Systems position peaked at $21.5M in Q3 2022.
  • 1,246 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

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