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

WT 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
Q3 		$186M Buy
+137,841
New +$181M 3% 13
2025
Q2 		– Sell
-1,000
Closed -$580K – 43
2025
Q1 		$580K Buy
+1,000
New +$630K 0.07% 25

Other funds holding MPWR

Robeco Schweiz
Robeco Schweiz Zurich, Switzerland $5.55B AUM 53.94% 1-Year Est. Return
Zevenbergen Capital Investments
Zevenbergen Capital Investments Edmonds, Washington $4.37B AUM 52.9% 1-Year Est. Return
Congress Asset Management
Congress Asset Management Boston, Massachusetts $15.4B AUM 30.39% 1-Year Est. Return
DekaBank Deutsche Girozentrale
DekaBank Deutsche Girozentrale Frankfurt, Germany $87.8B AUM 20.94% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return
Pembroke Management
Pembroke Management Montreal, Quebec, Canada $809M AUM 17.64% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $118B AUM 40.52% 1-Year Est. Return
Asset Management One
Asset Management One Tokyo, Japan $40B AUM 30.45% 1-Year Est. Return
AssetMark Inc
AssetMark Inc Concord, California $59.5B AUM 15.92% 1-Year Est. Return

WT Asset Management's MPWR Position: Q3 2026 in Review

WT Asset Management opened a new position in Monolithic Power Systems (MPWR) in Q3 2026: 137,841 shares worth $186M. The stake represents 3% of the portfolio and ranks #13 among its holdings. This is a return to the name: WT Asset Management previously reported a position in MPWR as recently as Q1 2025.

WT Asset Management first reported a position in MPWR in Q1 2025 and has held it in 2 quarters since. 387 funds tracked by Wall St. Rank hold MPWR as of Q3 2026.

  • WT Asset Management held 137,841 shares of Monolithic Power Systems worth $186M as of Q3 2026.
  • Monolithic Power Systems was a new WT Asset Management position in Q3 2026.
  • Monolithic Power Systems made up 3% of WT Asset Management's portfolio in Q3 2026, its #13 holding.
  • WT Asset Management first reported a position in Monolithic Power Systems in Q1 2025 and has held it in 2 quarters since.
  • 387 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q3 2026.

Based on WT Asset Management's 13F filing for Q3 2026, filed 28 Oct 2026.