Impax Asset Management Group
MPWR icon

Impax Asset Management Group’s Monolithic Power Systems MPWR Stock Holding History

Impax Asset 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
Q2 		$87.7M Sell
63,427
-25,029
-28% -$37.6M 0.57% 49
2026
Q1 		$96.7M Sell
88,456
-17,782
-17% -$19.4M 0.67% 41
2025
Q4 		$96.3M Sell
106,238
-25,163
-19% -$24.2M 0.6% 57
2025
Q3 		$120M Sell
131,401
-42,443
-24% -$34.4M 0.7% 45
2025
Q2 		$126M Sell
173,844
-34,774
-17% -$22.2M 0.73% 47
2025
Q1 		$120M Sell
208,618
-29,292
-12% -$18.5M 0.72% 50
2024
Q4 		$140M Buy
237,910
+50,386
+27% +$36.5M 0.63% 59
2024
Q3 		$172M Sell
187,524
-24,661
-12% -$21.3M 0.68% 52
2024
Q2 		$173M Sell
212,185
-31,497
-13% -$22.7M 0.71% 52
2024
Q1 		$164M Sell
243,682
-57,977
-19% -$38.7M 0.63% 55
2023
Q4 		$189M Sell
301,659
-17,078
-5% -$8.92M 0.76% 50
2023
Q3 		$147M Buy
318,737
+1,034
+0.3% +$529K 0.65% 53
2023
Q2 		$171M Sell
317,703
-61,009
-16% -$29M 0.69% 55
2023
Q1 		$189M Sell
378,712
-79,878
-17% -$36.7M 0.79% 45
2022
Q4 		$161M Buy
458,590
+47,000
+11% +$16.9M 0.72% 49
2022
Q3 		$149M Sell
411,590
-10,319
-2% -$4.59M 0.77% 50
2022
Q2 		$161M Sell
421,909
-11,906
-3% -$5.03M 0.79% 51
2022
Q1 		$210M Sell
433,815
-110,813
-20% -$48.3M 0.87% 46
2021
Q4 		$268M Buy
544,628
+72,641
+15% +$37.5M 0.98% 34
2021
Q3 		$228M Sell
471,987
-48,867
-9% -$22.2M 0.94% 36
2021
Q2 		$194M Buy
520,854
+50,643
+11% +$17.8M 0.85% 41
2021
Q1 		$165M Buy
470,211
+159,685
+51% +$58.2M 0.85% 44
2020
Q4 		$113M Buy
310,526
+179,912
+138% +$57.7M 0.72% 53
2020
Q3 		$36.3M Buy
+130,614
New +$34M 0.32% 68

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 $3.37T AUM 44.26% 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

Impax Asset Management Group's MPWR Position: Q2 2026 in Review

Impax Asset Management Group reduced its Monolithic Power Systems (MPWR) stake by 28% in Q2 2026, selling an estimated $37.6M and leaving 63,427 shares worth $87.7M. The position accounts for 0.57% of the portfolio, ranked #49.

Impax Asset Management Group first reported a position in MPWR in Q3 2020 and has held it in 24 quarters since. The position peaked at $268M in Q4 2021. 1,235 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Impax Asset Management Group held 63,427 shares of Monolithic Power Systems worth $87.7M as of Q2 2026.
  • Impax Asset Management Group sold 25,029 Monolithic Power Systems shares in Q2 2026, an estimated $37.6M.
  • Monolithic Power Systems made up 0.57% of Impax Asset Management Group's portfolio in Q2 2026, its #49 holding.
  • Impax Asset Management Group first reported a position in Monolithic Power Systems in Q3 2020 and has held it in 24 quarters since.
  • Impax Asset Management Group's Monolithic Power Systems position peaked at $268M in Q4 2021.
  • 1,235 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Impax Asset Management Group's 13F filing for Q2 2026, filed 11 Aug 2026.