William Mack & Associates’s Monolithic Power Systems MPWR Stock Holding History

William Mack & Associates’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	$1.35K	Buy	+1	New	+$1.31K	﹤0.01%	648

Other funds holding MPWR

BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM

Invesco Atlanta, Georgia $1.27T AUM 50.62% 1-Year Est. Return

State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

VanEck Associates New York $165B AUM 72.14% 1-Year Est. Return

Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return

Franklin Resources San Mateo, California $474B AUM 32.39% 1-Year Est. Return

William Mack & Associates's MPWR Position: Q3 2026 in Review

William Mack & Associates opened a new position in Monolithic Power Systems (MPWR) in Q3 2026: 1 share worth $1.35K. The stake represents ﹤0.01% of the portfolio and ranks #648 among its holdings.

1,045 funds tracked by Wall St. Rank hold MPWR as of Q3 2026.

William Mack & Associates held 1 share of Monolithic Power Systems worth $1.35K as of Q3 2026.
Monolithic Power Systems was a new William Mack & Associates position in Q3 2026.
Monolithic Power Systems made up ﹤0.01% of William Mack & Associates's portfolio in Q3 2026, its #648 holding.
1,045 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q3 2026.

Based on William Mack & Associates's 13F filing for Q3 2026, filed 27 Oct 2026.