GAMCO Investors’s OSI Systems OSIS Stock Holding History

GAMCO Investors’s Portfolio OSIS Stock Details OSIS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-3,564	Closed	-$801K	–	1057
2025 Q2	$801K	Buy	+3,564	New	+$761K	0.01%	716

Other funds holding OSIS

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Mawer Investment Management Calgary, Alberta, Canada $15.4B AUM 10.9% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

GAMCO Investors's OSIS Position: Q3 2025 in Review

GAMCO Investors sold out of OSI Systems (OSIS) in Q3 2025, closing a stake of 3,564 shares — an estimated $801K sold.

GAMCO Investors first reported a position in OSIS in Q2 2025 and held it in 1 quarter. The position peaked at $801K in Q2 2025. 349 funds tracked by Wall St. Rank hold OSIS as of Q3 2025.

GAMCO Investors reported no remaining OSI Systems position as of Q3 2025 after selling out during the quarter.
GAMCO Investors sold 3,564 OSI Systems shares in Q3 2025, an estimated $801K.
GAMCO Investors first reported a position in OSI Systems in Q2 2025 and held it in 1 quarter.
GAMCO Investors's OSI Systems position peaked at $801K in Q2 2025.
349 funds tracked by Wall St. Rank held OSI Systems as of Q3 2025.

Based on GAMCO Investors's 13F filing for Q3 2025, filed 12 Nov 2025.