KOSS · Koss Corp · Shareholders & Ownership
Market Cap
$33.70M
Shares
9.47M
Volume · Oct 21
28.17K
Avg daily vol (3M)
32.39K
Every disclosed holder of KOSS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns KOSS
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 498,994 | 5.27% |
| Insiders (Forms 3, 4, 5) | 1,770,722 | 18.71% |
| 13D/G-only blocks | 0 | 0.00% |
| Remaining | 7,196,722 | 76.02% |
| Registered funds (N-PORT, not summed) | 280,453 | 2.96% |
Shares outstanding: 9,466,438, the issuer's latest cover-page count restated onto today's split basis.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of KOSS
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
932,708 | ||
| 2 |
|
809,502 | ||
| 3 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
189,607 | ||
| 4 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
122,145 | ||
| 5 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
94,977 | ||
| 5.1 |
iShares Micro-Cap ETF
Fund
S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
19,211 | ||
| 6 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
67,462 | ||
| 7 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
59,491 | ||
| 8 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
33,058 | ||
| 9 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
30,740 | ||
| 10 |
|
26,012 | ||
| 11 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
24,433 | ||
| 11.1 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
4,843 | ||
| 11.2 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
2,964 | ||
| 11.3 |
U.S. VECTOR EQUITY PORTFOLIO
Fund
S000000982 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
2,822 | ||
| 11.4 |
U.S. Sustainability Core 1 Portfolio
Fund
S000020422 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
2,113 | ||
| 11.5 |
Dimensional US Sustainability Core 1 ETF
Fund
S000076639 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
2,021 | ||
| 12 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
21,822 | ||
| 13 |
|
17,974 | ||
| 14 |
JAMES INVESTMENT RESEARCH, INC.
13F
CIK 810384 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15,475 | ||
| 15 |
NewEdge Advisors, LLC
13F
CIK 1633516 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15,475 | ||
| 16 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
11,422 | ||
| 17 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
10,287 | ||
| 18 |
Fidelity Series Total Market Index Fund
Fund
S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
7,407 | ||
| 19 |
EA Bridgeway Omni Small-Cap Value ETF
Fund
S000078089 · Registered fund · Jun 30, 2026
EA Series Trust, not summed
|
6,323 | ||
| 20 |
|
2,500 | ||
| 21 |
|
2,161 | ||
| 22 |
Fidelity Nasdaq Composite Index Fund
Fund
S000055366 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
2,071 | ||
| 23 |
Vanguard Global Advisers, LLC
13F
CIK 1811242 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,040 | ||
| 24 |
1290 VT Micro Cap Portfolio
Fund
S000044688 · Registered fund · Jun 30, 2026
EQ Advisors Trust, not summed
|
1,055 | ||
| 25 |
Activest Wealth Management
13F
CIK 1883134 · Registered investment adviser · Sep 30, 2026
|
1,000 | ||
| 26 |
N.E.W. Advisory Services LLC
13F
CIK 1803456 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,000 | ||
| 27 |
Tower Research Capital LLC (TRC)
13F
CIK 1533421 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
672 | ||
| 28 |
CREATIVE FINANCIAL DESIGNS INC /ADV
13F
CIK 819864 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
300 | ||
| 29 |
SBI Securities Co., Ltd.
13F
CIK 1851815 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
120 | ||
| 30 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
80 | ||
| 31 |
OSAIC HOLDINGS, INC.
13F
CIK 1677044 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
50 | ||
| 32 |
|
23 | ||
| 33 |
Crewe Advisors LLC
13F
CIK 1730033 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
20 | ||
| 34 |
Parallel Advisors, LLC
13F
CIK 1690010 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9 | ||
| 35 |
Caitong International Asset Management Co., Ltd
13F
CIK 1963355 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2 |
4 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.