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Riverstone Advisors’s Monolithic Power Systems MPWR Stock Holding History

Riverstone Advisors’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 		$1.13M Buy
819
+36
+5% +$54K 0.47% 24
2026
Q1 		$856K Buy
783
+110
+16% +$120K 0.42% 26
2025
Q4 		$610K Buy
673
+5
+0.7% +$4.81K 0.29% 31
2025
Q3 		$615K Buy
668
+70
+12% +$56.8K 0.3% 30
2025
Q2 		$437K Buy
598
+215
+56% +$137K 0.24% 35
2025
Q1 		$222K Buy
+383
New +$241K 0.13% 54
2024
Q3 		– Sell
-422
Closed -$347K – 52
2024
Q2 		$347K Hold
422
– – 0.21% 35
2024
Q1 		$286K Sell
422
-1,729
-80% -$1.15M 0.17% 36
2023
Q4 		$1.36M Sell
2,151
-15
-0.7% -$7.84K 0.88% 21
2023
Q3 		$1M Buy
2,166
+36
+2% +$18.4K 0.69% 23
2023
Q2 		$1.15M Sell
2,130
-35
-2% -$16.6K 0.7% 24
2023
Q1 		$1.08M Buy
+2,165
New +$995K 0.69% 23
2022
Q4 		– Sell
-604
Closed -$219K – 49
2022
Q3 		$219K Hold
604
– – 0.14% 43
2022
Q2 		$232K Sell
604
-200
-25% -$84.5K 0.15% 44
2022
Q1 		$390K Sell
804
-32
-4% -$13.9K 0.2% 32
2021
Q4 		$412K Buy
836
+180
+27% +$92.9K 0.18% 32
2021
Q3 		$318K Hold
656
– – 0.15% 30
2021
Q2 		$245K Hold
656
– – 0.12% 35
2021
Q1 		$232K Sell
656
-10
-2% -$3.64K 0.12% 37
2020
Q4 		$244K Buy
+666
New +$213K 0.14% 33

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

Riverstone Advisors's MPWR Position: Q2 2026 in Review

Riverstone Advisors increased its Monolithic Power Systems (MPWR) stake by 4.6% in Q2 2026, buying an estimated $54K and bringing the position to 819 shares worth $1.13M. The position accounts for 0.47% of the portfolio, ranked #24.

Riverstone Advisors first reported a position in MPWR in Q4 2020 and has held it in 20 quarters since. The position peaked at $1.36M in Q4 2023. 1,244 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Riverstone Advisors held 819 shares of Monolithic Power Systems worth $1.13M as of Q2 2026.
  • Riverstone Advisors bought 36 Monolithic Power Systems shares in Q2 2026, an estimated $54K.
  • Monolithic Power Systems made up 0.47% of Riverstone Advisors's portfolio in Q2 2026, its #24 holding.
  • Riverstone Advisors first reported a position in Monolithic Power Systems in Q4 2020 and has held it in 20 quarters since.
  • Riverstone Advisors's Monolithic Power Systems position peaked at $1.36M in Q4 2023.
  • 1,244 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Riverstone Advisors's 13F filing for Q2 2026, filed 6 Aug 2026.