One Stop Systems Inc (OSS)
Who owns One Stop Systems Inc (OSS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 86.7% of the shares are freely tradable; institutional investors hold 41.0%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Group Inc | 4.26 | 1,054,266 | +20.8 | 12/31/2025 |
| Vanguard Capital Management, LLC | 3.87 | 959,588 | +0.0 | 03/31/2026 |
| Jane Street Group LLC | 3.53 | 874,558 | +44.8 | 03/31/2026 |
| BlackRock Inc | 2.41 | 597,303 | +334.6 | 03/31/2026 |
| Bard Associates Inc | 2.18 | 540,666 | -36.5 | 03/31/2026 |
| Morgan Stanley - Brokerage Accounts | 1.74 | 431,919 | +594.0 | 03/31/2026 |
| Marshall Wace Asset Management Ltd | 1.69 | 418,978 | +52.9 | 03/31/2026 |
| UBS Group AG | 1.64 | 407,014 | +5,704.5 | 03/31/2026 |
| Millennium Management LLC | 1.62 | 400,729 | +865.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 2.80 | 693,556 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.