OSISOSI Systems, Inc.

$211.09

Who owns OSIS

365 institutions reported holding OSIS for 2026Q1, together 109% of the company, more than the 355 a quarter earlier.

365

Institutions reporting a position · as of 2026Q1 · up from 355 the quarter before

Shares held by institutions
18.8M

Shares held by institutions · 109% of the company · long US equity positions only, as reported on Form 13F

Reported value
$4.99B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
46%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
42
Positions exited
37
Added to
112
Reduced
135
Top 10 holdersof the company
61%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q136518.8M$4.99B
2025Q435518.7M$4.78B
2025Q334718.6M$4.65B
2025Q233518.6M$4.19B
2025Q130319.3M$3.75B
2024Q430318.0M$3.02B
2024Q327016.4M$2.48B
2024Q226215.2M$2.10B
2024Q124615.0M$2.14B
2023Q422315.0M$1.93B
2023Q323214.7M$1.74B
2023Q220514.9M$1.76B
2023Q118015.4M$1.54B
2022Q418715.3M$1.21B
2022Q317815.2M$1.09B
2022Q218115.5M$1.33B
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.2.5M15%$672M
VANGUARD GROUP INC2.1M12%$553M
FMR LLC2.0M11%$522M
HENDERSON GROUP PLC0.8M4.5%$205M
Mawer Investment Management Ltd.0.7M3.8%$176M
STATE STREET CORP0.7M3.8%$176M
Capital International Investors0.6M3.6%$164M
GEODE CAPITAL MANAGEMENT LLC0.4M2.5%$117M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC0.4M2.5%$114M
DIMENSIONAL FUND ADVISORS LP0.4M2.3%$105M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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