Dark Forest Capital Management’s OSI Systems OSIS Stock Holding History

Dark Forest Capital Management’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
2026 Q2	$821K	Buy	+3,752	New	+$919K	0.05%	552
2025 Q4	–	Sell	-6,954	Closed	-$1.73M	–	1243
2025 Q3	$1.73M	Buy	6,954 +1,089	+19%	+$249K	0.07%	518
2025 Q2	$1.32M	Buy	+5,865	New	+$1.25M	0.05%	643
2022 Q2	–	Sell	-57	Closed	-$5K	–	1239
2022 Q1	$5K	Buy	+57	New	+$4.79K	﹤0.01%	1107

Other funds holding OSIS

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Jupiter Topco New York $245B AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return

CCM

Channing Capital Management Chicago, Illinois $4.34B AUM 37.08% 1-Year Est. Return

Dark Forest Capital Management's OSIS Position: Q2 2026 in Review

Dark Forest Capital Management opened a new position in OSI Systems (OSIS) in Q2 2026: 3,752 shares worth $821K. The stake represents 0.05% of the portfolio and ranks #552 among its holdings. This is a return to the name: Dark Forest Capital Management previously reported a position in OSIS as recently as Q3 2025.

Dark Forest Capital Management first reported a position in OSIS in Q1 2022 and has held it in 4 quarters since. The position peaked at $1.73M in Q3 2025. 364 funds tracked by Wall St. Rank hold OSIS as of Q2 2026.

Dark Forest Capital Management held 3,752 shares of OSI Systems worth $821K as of Q2 2026.
OSI Systems was a new Dark Forest Capital Management position in Q2 2026.
OSI Systems made up 0.05% of Dark Forest Capital Management's portfolio in Q2 2026, its #552 holding.
Dark Forest Capital Management first reported a position in OSI Systems in Q1 2022 and has held it in 4 quarters since.
Dark Forest Capital Management's OSI Systems position peaked at $1.73M in Q3 2025.
364 funds tracked by Wall St. Rank held OSI Systems as of Q2 2026.

Based on Dark Forest Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.