OPEN Institutional Ownership
Top institutional (13F) holders of OPEN and activist (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
37
Institutional value
$1.33B
Top holder
Vanguard Portfolio Management
Activist holders
4
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| MORGAN STANLEYinvestment advisor | 0.1% | Aug 13, 2026 | $438.55M |
| Vanguard Portfolio Managementinvestment advisor | 7.9% | Aug 13, 2026 | $352.11M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 2.6% | Aug 12, 2026 | $115.29M |
| JANE STREET GROUP, LLCholding company | 0.0% | Aug 14, 2026 | $107.31M |
| MILLENNIUM MANAGEMENT LLCinvestment advisor | 0.0% | Aug 14, 2026 | $68.23M |
| Dimensional Fund Advisors LPinvestment advisor | 1.3% | Aug 11, 2026 | $58.11M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 1.1% | Aug 14, 2026 | $47.54M |
| RENAISSANCE TECHNOLOGIES LLCinvestment advisor | 0.9% | Aug 13, 2026 | $41.72M |
| NORTHERN TRUST CORPinvestment advisor | 0.9% | Aug 13, 2026 | $38.94M |
| STATE STREET CORPORATIONinvestment advisor | 0.0% | Sep 22, 2026 | $33.96M |
| T. Rowe Price Associates, Inc.investment advisor | 0.6% | Aug 14, 2026 | $28.6M |
| UBS Group AGinvestment advisor | 0.5% | Aug 13, 2026 | $22.16M |
| BANK OF AMERICA CORP /DE/investment advisor | 0.5% | Aug 14, 2026 | $21M |
| D. E. Shaw & Co., Inc.investment advisor | 0.0% | Aug 14, 2026 | $19.45M |
| Canada Pension Plan Investment Boardother | 0.3% | Aug 14, 2026 | $14.77M |
| AQR CAPITAL MANAGEMENT LLCinvestment advisor | 0.0% | Aug 14, 2026 | $14.67M |
| GOLDMAN SACHS GROUP INCinvestment advisor | 0.3% | Aug 14, 2026 | $13.61M |
| Bank of New York Mellon Corpholding company | 0.3% | Aug 6, 2026 | $13.3M |
| TWO SIGMA INVESTMENTS, LPinvestment advisor | 0.3% | Aug 14, 2026 | $12.27M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPinvestment advisor | 0.0% | Aug 14, 2026 | $11.07M |
| SOROS FUND MANAGEMENT LLCinvestment advisor | 0.0% | Aug 14, 2026 | $9.44M |
| Invesco Ltd.investment advisor | 0.2% | Aug 14, 2026 | $9.26M |
| Swiss National Bankinvestment advisor | 0.2% | Aug 11, 2026 | $8.44M |
| CITADEL ADVISORS LLCinvestment advisor | 0.0% | Sep 1, 2026 | $7.7M |
| JPMORGAN CHASE & COinvestment advisor | 0.2% | Aug 12, 2026 | $7.44M |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.