KOSS Koss Corp.
Koss Corp. (KOSS) Institutional Ownership
What the institutions did with KOSS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 189.6K | 38.0% |
| BlackRock, Inc. | 95.0K | 19.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 59.5K | 11.9% |
| CITADEL ADVISORS LLC | 33.1K | 6.6% |
| VANGUARD FIDUCIARY TRUST CO | 30.7K | 6.2% |
| DIMENSIONAL FUND ADVISORS LP | 24.4K | 4.9% |
| STATE STREET CORP | 18.0K | 3.6% |
| JAMES INVESTMENT RESEARCH, INC. | 15.5K | 3.1% |
| NewEdge Advisors, LLC | 15.5K | 3.1% |
| NORTHERN TRUST CORP | 10.3K | 2.1% |
| UBS Group AG | 2.2K | 0.4% |
| Vanguard Global Advisers, LLC | 2.0K | 0.4% |
| N.E.W. Advisory Services LLC | 1.0K | 0.2% |
| Activest Wealth Management | 1.0K | 0.2% |
| Tower Research Capital LLC (TRC) | 672 | 0.1% |
| CREATIVE FINANCIAL DESIGNS INC /ADV | 300 | 0.1% |
| SBI Securities Co., Ltd. | 120 | 0.0% |
| MORGAN STANLEY | 80 | 0.0% |
| OSAIC HOLDINGS, INC. | 50 | 0.0% |
| BARCLAYS PLC | 23 | 0.0% |
| Crewe Advisors LLC | 20 | 0.0% |
| Parallel Advisors, LLC | 9 | 0.0% |
| Caitong International Asset Management Co., Ltd | 2 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| CITADEL ADVISORS LLC | New | 0 | 33.1K | +33.1K |
| XTX Topco Ltd | Sold Out | 10.8K | 0 | -10.8K |
| PNC FINANCIAL SERVICES GROUP, INC. | Sold Out | 7.0K | 0 | -7.0K |
| BlackRock, Inc. | Increased | 89.6K | 95.0K | +5.4K |
| NORTHERN TRUST CORP | Reduced | 14.3K | 10.3K | -4.0K |
| UBS Group AG | Reduced | 6.1K | 2.2K | -4.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 55.9K | 59.5K | +3.6K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 21.6K | 24.4K | +2.8K |
| VANGUARD FIDUCIARY TRUST CO | Reduced | 31.3K | 30.7K | -594 |
| Tower Research Capital LLC (TRC) | Reduced | 1.2K | 672 | -540 |
| BARCLAYS PLC | New | 0 | 23 | +23 |
| Caitong International Asset Management Co., Ltd | New | 0 | 2 | +2 |
| Parallel Advisors, LLC | Reduced | 10 | 9 | -1 |
| CITIGROUP INC | Sold Out | 1 | 0 | -1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.