OSI SYSTEMS INC (OSIS) Institutional Ownership Changes & 13F Activity
OSI SYSTEMS INC (OSIS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Fmr Llc, Driehaus Capital Management Llc, Brown Advisory Inc, Mirae Asset Global Etfs Holdings Ltd., and Wellington Management Group Llp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Neuberger Berman Group Llc | Buy | +3,131 | +1.0% | 303,923 | $80.68M | Q1 2026 | Oct 27, 2026 |
| M&T Bank Corp | Sell | -26,954 | -94.4% | 1,609 | $427.20K | Q1 2026 | Sep 04, 2026 |
| Wells Fargo & Company/Mn | Sell | -1,154 | -2.2% | 50,772 | $13.48M | Q1 2026 | Jul 08, 2026 |
| Western Wealth Management, Llc | Buy | +2 | — | 2 | $531.00 | Q1 2026 | May 19, 2026 |
| Bank Of America Corp | Sell | -19,878 | -6.9% | 266,375 | $70.73M | Q1 2026 | May 18, 2026 |
| Intrinsic Edge Capital Management Llc | Sell | -5,000 | -16.0% | 26,158 | $6.95M | Q1 2026 | May 18, 2026 |
| California State Teachers Retirement System | Buy | +3,663 | +24.4% | 18,670 | $4.96M | Q1 2026 | May 18, 2026 |
| Amundi | Buy | +532 | +19.6% | 3,241 | $860.52K | Q1 2026 | May 18, 2026 |
| Fmr Llc | Buy | +309,658 | +18.7% | 1,967,088 | $522.28M | Q1 2026 | May 15, 2026 |
| Driehaus Capital Management Llc | Sell | -117,805 | -50.0% | 117,963 | $31.32M | Q1 2026 | May 15, 2026 |
| Brown Advisory Inc | Sell | -73,351 | -48.4% | 78,254 | $20.78M | Q1 2026 | May 15, 2026 |
| Mirae Asset Global Etfs Holdings Ltd. | Buy | +69,393 | +42.5% | 232,497 | $61.60M | Q1 2026 | May 15, 2026 |
| Wellington Management Group Llp | Buy | +43,893 | +88.0% | 93,754 | $24.89M | Q1 2026 | May 15, 2026 |
| Van Eck Associates Corp | Sell | -38,915 | -17.1% | 188,180 | $49.96M | Q1 2026 | May 15, 2026 |
| Goldman Sachs Group Inc | Sell | -33,257 | -30.7% | 75,120 | $19.95M | Q1 2026 | May 15, 2026 |
| Geode Capital Management, Llc | Buy | +29,760 | +7.2% | 440,723 | $117.03M | Q1 2026 | May 15, 2026 |
| Nomura Asset Management International Inc. | Sell | -27,478 | -14.5% | 161,492 | $42.88M | Q1 2026 | May 15, 2026 |
| Advisors Asset Management, Inc. | Buy | +23,879 | — | 23,879 | $6.34M | Q1 2026 | May 15, 2026 |
| Janus Henderson Group Plc | Buy | +19,747 | +2.6% | 772,314 | $205.06M | Q1 2026 | May 15, 2026 |
| Nicholas Investment Partners, Lp | Sell | -17,066 | -35.1% | 31,553 | $8.38M | Q1 2026 | May 15, 2026 |
| Barclays Plc | Sell | -16,781 | -53.5% | 14,579 | $3.87M | Q1 2026 | May 15, 2026 |
| Citadel Advisors Llc | Buy | +13,715 | +1112.3% | 14,948 | $3.97M | Q1 2026 | May 15, 2026 |
| Morgan Stanley | Sell | -12,527 | -5.6% | 210,377 | $55.86M | Q1 2026 | May 15, 2026 |
| Waverly Advisors, Llc | Buy | +11,413 | +1283.8% | 12,302 | $3.27M | Q1 2026 | May 15, 2026 |
| American Century Companies Inc | Buy | +10,664 | +26.4% | 50,994 | $13.54M | Q1 2026 | May 15, 2026 |
| Marshall Wace, Llp | Buy | +10,183 | — | 10,183 | $2.70M | Q1 2026 | May 15, 2026 |
| Empowered Funds, Llc | Buy | +7,922 | — | 7,922 | $2.10M | Q1 2026 | May 15, 2026 |
| Hood River Capital Management Llc | Sell | -7,300 | -1.9% | 372,074 | $98.79M | Q1 2026 | May 15, 2026 |
| Susquehanna International Group, Llp | Buy | +6,826 | — | 6,826 | $1.81M | Q1 2026 | May 15, 2026 |
| Gotham Asset Management, Llc | Sell | -6,114 | -69.8% | 2,645 | $702.27K | Q1 2026 | May 15, 2026 |
Frequently asked questions about OSIS activity
Which institutional owners are buying OSIS?
Institutional owners buying OSIS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in OSIS activity?
"Buy" means an investor increased their reported position in OSIS compared to the prior reporting period. This reflects growing exposure to OSI SYSTEMS INC (OSIS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in OSIS increasing?
Institutional interest in OSIS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related OSIS Institutional Insights
- OSIS Overview
- OSIS 13F Institutional Holders
- OSIS Superinvestors
- Technology Sector Institutional Ownership
- Technology Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Technology Stocks By Institutional Investors
- Most Sold Technology Stocks By Institutional Investors
- OSIS Insider Trading & SEC Form 4 Activity
- OSIS Articles
- Top Institutional Investor Stock Rankings