Osi Systems OSIS Institutional Ownership

Ownership Summary

Osi Systems Inc (NASDAQ:OSIS) has 364 institutional investors that have filed 13F reports for the period ending March 2026.

• Collectively, these holders controlled 150.3% of Osi Systems's outstanding shares in March 2026, up from 112.2% in December 2025.
• They increased total shares held in Osi Systems by 18.29% from last quarter, and the number of investors in OSIS increased 16.67% annually.
• During the quarter, 171 of these 364 funds increased positions in OSIS, 143 reduced exposure, and 50 held steady.
• Institutional investors collectively held 19.58Mn shares in Osi Systems as of March 2026, up by 3.03Mn shares quarter on quarter, and down 842.19K shares year over year.
• BlackRock, Inc. leads ownership in OSIS with 2.53Mn shares as of March 31, 2026, equal to 19.42% of outstanding shares.
• Leading buyers of Osi Systems shares for the quarter ending March 2026 were VANGUARD PORTFOLIO MANAGEMENT LLC (1.25Mn), Janus Henderson Group Plc (792.06K), VANGUARD CAPITAL MANAGEMENT LLC (699.25K), FMR LLC (309.66K), Channing Capital Management, LLC (266.88K).
• The largest sales of OSIS for the quarter ending March 2026 came from UBS Group AG (180.28K), Goldman Sachs Group Inc (141.63K), Mawer Investment Management Ltd. (140.97K), DRIEHAUS CAPITAL MANAGEMENT LLC (117.8K), Swedbank AB (103.09K).
• Business Quant data shows the 10 biggest positions in Osi Systems as of March 2026 are held by BlackRock, Inc. (2.53Mn), FMR LLC (1.97Mn), Janus Henderson Group Plc (1.54Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (1.25Mn), VANGUARD CAPITAL MANAGEMENT LLC (699.25K), Mawer Investment Management Ltd. (662.63K), State Street Corp (662.14K), Capital International Investors (619.48K), GEODE CAPITAL MANAGEMENT, LLC (440.72K), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (430.56K).