XT
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XTX Topco’s Monolithic Power Systems MPWR Stock Holding History

XTX Topco’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 		$8.23M Buy
+5,954
New +$8.94M 0.11% 180
2026
Q1 		– Sell
-2,025
Closed -$1.84M – 4152
2025
Q4 		$1.84M Buy
+2,025
New +$1.95M 0.05% 618
2025
Q3 		– Sell
-3,298
Closed -$2.41M – 3010
2025
Q2 		$2.41M Buy
+3,298
New +$2.1M 0.1% 261
2024
Q4 		– Sell
-848
Closed -$784K – 2702
2024
Q3 		$784K Buy
+848
New +$732K 0.06% 539
2024
Q2 		– Sell
-821
Closed -$556K – 2246
2024
Q1 		$556K Sell
821
-725
-47% -$484K 0.08% 433
2023
Q4 		$975K Sell
1,546
-1,109
-42% -$579K 0.21% 34
2023
Q3 		$1.23M Buy
+2,655
New +$1.36M 0.21% 57
2023
Q2 		– Sell
-3,162
Closed -$1.58M – 1665
2023
Q1 		$1.58M Buy
3,162
+998
+46% +$459K 0.33% 17
2022
Q4 		$765K Sell
2,164
-1,905
-47% -$684K 0.16% 144
2022
Q3 		$1.48M Buy
4,069
+3,051
+300% +$1.36M 0.37% 16
2022
Q2 		$391K Buy
1,018
+603
+145% +$255K 0.16% 182
2022
Q1 		$202K Buy
+415
New +$181K 0.09% 417

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

XTX Topco's MPWR Position: Q2 2026 in Review

XTX Topco opened a new position in Monolithic Power Systems (MPWR) in Q2 2026: 5,954 shares worth $8.23M. The stake represents 0.11% of the portfolio and ranks #180 among its holdings. This is a return to the name: XTX Topco previously reported a position in MPWR as recently as Q4 2025.

XTX Topco first reported a position in MPWR in Q1 2022 and has held it in 12 quarters since. 1,240 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • XTX Topco held 5,954 shares of Monolithic Power Systems worth $8.23M as of Q2 2026.
  • Monolithic Power Systems was a new XTX Topco position in Q2 2026.
  • Monolithic Power Systems made up 0.11% of XTX Topco's portfolio in Q2 2026, its #180 holding.
  • XTX Topco first reported a position in Monolithic Power Systems in Q1 2022 and has held it in 12 quarters since.
  • 1,240 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.