SG Americas Securities
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SG Americas Securities’s Monolithic Power Systems MPWR Stock Holding History

SG Americas Securities’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
2019
Q1 		– Sell
-38,400
Closed -$29K – 3529
2018
Q4 		$29K Buy
+38,400
New +$4.6M ﹤0.01% 2890

Other funds holding MPWR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

SG Americas Securities's MPWR Position: Q1 2026 in Review

SG Americas Securities reduced its Monolithic Power Systems (MPWR) stake by 31% in Q1 2026, selling an estimated $87.9M and leaving 181,766 shares worth $199M. The position accounts for 0.21% of the portfolio, ranked #78.

SG Americas Securities first reported a position in MPWR in Q3 2013 and has held it in 45 quarters since. The position peaked at $238M in Q4 2025. 1,115 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

  • SG Americas Securities held 181,766 shares of Monolithic Power Systems worth $199M as of Q1 2026.
  • SG Americas Securities sold 80,465 Monolithic Power Systems shares in Q1 2026, an estimated $87.9M.
  • Monolithic Power Systems made up 0.21% of SG Americas Securities's portfolio in Q1 2026, its #78 holding.
  • SG Americas Securities first reported a position in Monolithic Power Systems in Q3 2013 and has held it in 45 quarters since.
  • SG Americas Securities's Monolithic Power Systems position peaked at $238M in Q4 2025.
  • 1,115 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

Based on SG Americas Securities's 13F filing for Q1 2026, filed 16 Apr 2026.