BS
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Banco Santander’s Monolithic Power Systems MPWR Stock Holding History

Banco Santander’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 		– Sell
-892
Closed -$975K – 537
2026
Q1 		$975K Sell
892
-1,960
-69% -$2.14M 0.01% 331
2025
Q4 		$2.58M Buy
2,852
+1,960
+220% +$1.89M 0.02% 255
2025
Q3 		$821K Sell
892
-251
-22% -$204K 0.01% 335
2025
Q2 		$836K Sell
1,143
-268
-19% -$171K 0.01% 343
2025
Q1 		$818K Buy
+1,411
New +$889K 0.01% 342
2024
Q4 		– Sell
-357
Closed -$330K – 486
2024
Q3 		$330K Sell
357
-10,734
-97% -$9.27M ﹤0.01% 385
2024
Q2 		$9.11M Buy
+11,091
New +$8M 0.11% 132

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

Banco Santander's MPWR Position: Q2 2026 in Review

Banco Santander sold out of Monolithic Power Systems (MPWR) in Q2 2026, closing a stake of 892 shares — an estimated $975K sold.

Banco Santander first reported a position in MPWR in Q2 2024 and held it in 7 quarters. The position peaked at $9.11M in Q2 2024. 1,240 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Banco Santander reported no remaining Monolithic Power Systems position as of Q2 2026 after selling out during the quarter.
  • Banco Santander sold 892 Monolithic Power Systems shares in Q2 2026, an estimated $975K.
  • Banco Santander first reported a position in Monolithic Power Systems in Q2 2024 and held it in 7 quarters.
  • Banco Santander's Monolithic Power Systems position peaked at $9.11M in Q2 2024.
  • 1,240 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Banco Santander's 13F filing for Q2 2026, filed 29 Jul 2026.