OSISOSI Systems, Inc.

$194.91-17% 1Y

Who owns OSIS

359 institutions reported holding OSIS for 2026Q2, together 109% of the company, fewer than the 364 a quarter earlier.

359

Institutions reporting a position · as of 2026Q2 · down from 364 the quarter before

Shares held by institutions
18.9M

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

Reported value
$4.13B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
46%

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

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
53
New positions
61
Positions exited
66
Added to
115
Reduced
124
Top 10 holdersof the company
60%
Shares sold shortsettled Sep 15, 2026
2.1M
Short interestof shares outstanding
12%
Days to coverat the average daily volume
8.2
Change in the short positionsince the Aug 31, 2026 count
+3.4%
Institutional ownership by quarter, 2013Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q235918.9M$4.13B
2026Q136418.8M$4.99B
2025Q435518.7M$4.78B
2025Q334718.6M$4.65B
2025Q233518.6M$4.19B
2025Q130319.3M$3.75B
2024Q430418.0M$3.02B
2024Q327116.4M$2.48B
2024Q226315.2M$2.10B
2024Q124715.0M$2.14B
2023Q422415.0M$1.93B
2023Q323314.7M$1.74B
2023Q220614.9M$1.76B
2023Q118115.4M$1.54B
2022Q418815.3M$1.21B
2022Q317915.2M$1.09B
Largest reported holders, 2026Q2
HolderShares% of companyValue
BlackRock Inc.2.6M15%$558M
VANGUARD GROUP INC2.1M12%$462M
FMR LLC1.7M10%$380M
Jupiter Topco LLC0.9M5.2%$198M
STATE STREET CORP0.7M3.9%$147M
Capital International Investors0.6M3.4%$130M
GEODE CAPITAL MANAGEMENT LLC0.5M2.7%$101M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC0.5M2.6%$99M
Channing Capital Management, LLC0.4M2.5%$95M
Hood River Capital Management LLC0.4M2.4%$91M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20262.1M12%8.2
Aug 31, 20262.1M12%5.0
Aug 14, 20262.0M12%13.3
Jul 31, 20262.1M12%12.4
Jul 15, 20262.1M12%11.0
Jun 30, 20262.3M13%8.4
Jun 15, 20262.4M14%8.9
May 29, 20262.2M13%7.5
May 15, 20262.2M13%4.8
Apr 30, 20262.1M12%8.5
Apr 15, 20262.1M12%9.6
Mar 31, 20262.1M12%6.1

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. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

opening the register…