Walleye Capital
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Walleye Capital’s Monolithic Power Systems MPWR Stock Holding History

Walleye Capital’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
Q3 		$35.6M Buy
26,400
+26,200
+13,100% +$34.3M 0.03% 510
2026
Q2 		$276K Buy
200
+100
+100% +$150K ﹤0.01% 3235
2026
Q1 		$109K Sell
100
-600
-86% -$656K ﹤0.01% 3635
2025
Q4 		$634K Sell
700
-400
-36% -$385K ﹤0.01% 2796
2025
Q3 		$1.01M Buy
1,100
+200
+22% +$162K ﹤0.01% 2082
2025
Q2 		$658K Sell
900
-900
-50% -$573K ﹤0.01% 2404
2025
Q1 		$1.04M Sell
1,800
-1,300
-42% -$819K ﹤0.01% 1940
2024
Q4 		$1.83M Buy
+3,100
New +$2.24M ﹤0.01% 1861
2024
Q3 		– Sell
-200
Closed -$164K – 5669
2024
Q2 		$164K Sell
200
-1,700
-89% -$1.23M ﹤0.01% 4434
2024
Q1 		$1.29M Buy
1,900
+1,200
+171% +$801K ﹤0.01% 2344
2023
Q4 		$442K Sell
700
-1,600
-70% -$836K ﹤0.01% 3039
2023
Q3 		$1.06M Buy
2,300
+900
+64% +$460K ﹤0.01% 2207
2023
Q2 		$756K Buy
1,400
+900
+180% +$428K ﹤0.01% 2087
2023
Q1 		$250K Buy
+500
New +$230K ﹤0.01% 2282

Other funds holding MPWR

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Invesco
Invesco Atlanta, Georgia $1.27T AUM 50.62% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $165B AUM 72.14% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $474B AUM 32.39% 1-Year Est. Return

Walleye Capital's MPWR Position: Q3 2026 in Review

Walleye Capital increased its Monolithic Power Systems (MPWR) stake by 650% in Q3 2026, buying an estimated $5.47M and bringing the position to 4,816 shares worth $6.49M. The position accounts for 0.01% of the portfolio, ranked #1644.

Walleye Capital first reported a position in MPWR in Q3 2018 and has held it in 15 quarters since. The position peaked at $9.7M in Q4 2024. 1,045 funds tracked by Wall St. Rank hold MPWR as of Q3 2026.

  • Walleye Capital held 4,816 shares of Monolithic Power Systems worth $6.49M as of Q3 2026.
  • Walleye Capital bought 4,174 Monolithic Power Systems shares in Q3 2026, an estimated $5.47M.
  • Monolithic Power Systems made up 0.01% of Walleye Capital's portfolio in Q3 2026, its #1644 holding.
  • Walleye Capital first reported a position in Monolithic Power Systems in Q3 2018 and has held it in 15 quarters since.
  • Walleye Capital's Monolithic Power Systems position peaked at $9.7M in Q4 2024.
  • 1,045 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q3 2026.

Based on Walleye Capital's 13F filing for Q3 2026, filed 13 Nov 2026.