OSI Systems
OSIS
368 hedge funds and large institutions have $5B invested in OSI Systems in 2026 Q1 according to their latest regulatory filings, with 50 funds opening new positions, 124 increasing their positions, 143 reducing their positions, and 34 closing their positions.
47% more first-time investments, than exits
New positions opened: 50 | Existing positions closed: 34
3.65% more ownership
Funds ownership: 110.79% → 114.45% (+3.7%)
3% more funds holding
Funds holding: 358 → 368 (+10)
4% more capital invested
Capital invested by funds: $4.8B → $5B (+$203M)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
13% less repeat investments, than reductions
Existing positions increased: 124 | Existing positions reduced: 143
69% less call options, than puts
Call options by funds: $14.3M | Put options by funds: $45.9M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$85.6M |
| 2 |
CCM
Channing Capital Management
Chicago,
Illinois
|
+$73.8M |
| 3 |
Mirae Asset Global ETFs Holdings
Causeway Bay,
Hong Kong
|
+$19.2M |
| 4 |
M
Mirova
Paris,
France
|
+$18M |
| 5 |
New York State Common Retirement Fund
Albany,
New York
|
+$15.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS Group
Zurich,
Switzerland
|
-$49.8M |
| 2 |
Mawer Investment Management
Calgary,
Alberta, Canada
|
-$39M |
| 3 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$32.6M |
| 4 |
Brown Advisory
Baltimore,
Maryland
|
-$20.3M |
| 5 |
UBS AM
Chicago,
Illinois
|
-$18.7M |
OSIS Hedge Fund Activity: Q1 2026 in Review
368 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in OSI Systems (OSIS) for Q1 2026, worth a combined $5B — up 4.2% from $4.8B a quarter earlier.
Buyers outnumbered sellers: 50 funds opened new OSIS positions and 34 closed out — a net gain of 16 holders — while 124 added to existing stakes and 143 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $85.6M. The largest seller was UBS Group, cutting an estimated $49.8M.
- 368 institutional investors held OSI Systems (OSIS) as of Q1 2026, up from 358 in Q4 2025.
- Funds reported $5B of OSI Systems stock for Q1 2026, up 4.2% quarter-over-quarter.
- 50 funds opened new OSI Systems positions in Q1 2026 and 34 closed out, a net change of +16 holders.
- The largest OSI Systems buyer in Q1 2026 was Fidelity Investments, an estimated $85.6M added.
- The largest OSI Systems seller in Q1 2026 was UBS Group, an estimated $49.8M sold.
Based on aggregated 13F filings for Q1 2026.