OSIS Institutional Ownership
Top institutional (13F) holders of OSIS and activist (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
49
Institutional value
$2.96B
Top holder
BlackRock, Inc.
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Top holders
| Holder | Filed | Value |
|---|---|---|
| BlackRock, Inc.holding company | Aug 7, 2026 | $558.13M |
| FMR LLCinvestment advisor | Aug 13, 2026 | $380.14M |
| Vanguard Portfolio Managementinvestment advisor | Aug 13, 2026 | $278.19M |
| Mawer Investment Management Ltd.investment advisor | May 6, 2026 | $175.94M |
| Vanguard Capital Managementinvestment advisor | Aug 13, 2026 | $153.76M |
| STATE STREET CORPORATIONholding company | Sep 22, 2026 | $147.42M |
| Capital International Investorsinvestment advisor | Aug 12, 2026 | $130.42M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | Aug 12, 2026 | $101.45M |
| Dimensional Fund Advisors LPinvestment advisor | Aug 11, 2026 | $90.54M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCinvestment advisor | Aug 12, 2026 | $82.96M |
| Neuberger Berman Group LLCinvestment advisor | Aug 13, 2026 | $70.86M |
| T. Rowe Price Associates, Inc.investment advisor | Aug 14, 2026 | $68.83M |
| MILLENNIUM MANAGEMENT LLCinvestment advisor | Aug 14, 2026 | $65.28M |
| Invesco Ltd.holding company | Aug 14, 2026 | $57.56M |
| PRIMECAP MANAGEMENT CO/CA/investment advisor | Aug 14, 2026 | $56.46M |
| UBS Group AGinvestment advisor | Aug 13, 2026 | $46.12M |
| MORGAN STANLEYinvestment advisor | Aug 13, 2026 | $43.3M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | Aug 14, 2026 | $42.38M |
| JPMORGAN CHASE & COholding company | Aug 12, 2026 | $40.62M |
| Ameriprise Financial, Inc.holding company | Aug 14, 2026 | $40.54M |
| NORTHERN TRUST CORPinvestment advisor | Aug 13, 2026 | $39.66M |
| WELLINGTON MANAGEMENT GROUP LLPinvestment advisor | Aug 14, 2026 | $38.84M |
| BANK OF AMERICA CORP /DE/investment advisor | Aug 14, 2026 | $30.04M |
| Clearbridge Investments, LLCinvestment advisor | Aug 13, 2026 | $29.58M |
| GOLDMAN SACHS GROUP INCinvestment advisor | Aug 14, 2026 | $26.17M |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.