25 institutions reported holding $1.7M of KOSS CORP (KOSS) in SEC 13F filings for 2026-03-31. Largest institutional holders: VANGUARD CAPITAL MANAGEMENT LLC ($678,793), BlackRock, Inc. ($320,771), GEODE CAPITAL MANAGEMENT, LLC ($200,202), VANGUARD FIDUCIARY TRUST CO ($112,176), DIMENSIONAL FUND ADVISORS LP ($77,367). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | $678,793 | 189,607 | New |
| 2 | BlackRock, Inc. | $320,771 | 89,601 | Added |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | $200,202 | 55,913 | Trimmed |
| 4 | VANGUARD FIDUCIARY TRUST CO | $112,176 | 31,334 | New |
| 5 | DIMENSIONAL FUND ADVISORS LP | $77,367 | 21,611 | Trimmed |
| 6 | STATE STREET CORP | $64,347 | 17,974 | Hold |
| 7 | JAMES INVESTMENT RESEARCH, INC. | $55,401 | 15,475 | Added |
| 8 | NORTHERN TRUST CORP | $51,140 | 14,285 | Hold |
| 9 | XTX Topco Ltd | $38,614 | 10,786 | Trimmed |
| 10 | PNC Financial Services Group, Inc. | $25,060 | 7,000 | Hold |
| 11 | UBS Group AG | $21,884 | 6,113 | Trimmed |
| 12 | NewEdge Advisors, LLC | $15,475 | 15,475 | Added |
| 13 | Vanguard Global Advisers, LLC | $7,303 | 2,040 | New |
| 14 | Tower Research Capital LLC (TRC) | $4,339 | 1,212 | Added |
| 15 | N.E.W. Advisory Services LLC | $3,580 | 1,000 | Hold |
| 16 | Activest Wealth Management | $3,580 | 1,000 | Hold |
| 17 | CREATIVE FINANCIAL DESIGNS INC /ADV | $1,074 | 300 | Hold |
| 18 | SBI Securities Co., Ltd. | $430 | 120 | Hold |
| 19 | MORGAN STANLEY | $286 | 80 | Trimmed |
| 20 | OSAIC HOLDINGS, INC. | $179 | 50 | Hold |
| 21 | Crewe Advisors LLC | $72 | 20 | Hold |
| 22 | Parallel Advisors, LLC | $36 | 10 | New |
| 23 | CITIGROUP INC | $4 | 1 | New |
| 24 | BANK OF AMERICA CORP /DE/ | $0 | 0 | Exited |
| 25 | Fairway Wealth LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31