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KOSS KOSS CORP

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COM (common), issuer CIK 56701

21 managers (23 13F filers) reported a position in KOSS shares at 2026-06-30, 498,994 shares in all. 3 filers opened a position and 3 filers sold out during the quarter.

Managers
21
13F filers
23
New
3
Added
3
Reduced
5
Sold out
3
Shares held by filers
498,994

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 3 filers holding222,387$892K-594Timeline
BlackRock, Inc.in group BlackRock, Inc.94,977$381K<0.01%+5,37613F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC59,491$239K<0.01%+3,57813F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC33,058$133K<0.01%new13F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP24,433$98K<0.01%+2,82213F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP17,974$72.1K<0.01%013F-HRTimelineGroup
JAMES INVESTMENT RESEARCH, INC.15,475$62.1K0.01%013F-HRTimeline
NewEdge Advisors, LLC15,475$62.1K<0.01%013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP10,287$41.3K<0.01%-3,99813F-HRTimelineGroup
UBS Group AGin group UBS Group AG2,161$8.67K<0.01%-3,95213F-HRTimelineGroup
N.E.W. Advisory Services LLC1,000$4.01K<0.01%013F-HRTimeline
Activest Wealth Management1,000$4.01K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…672$2.69K<0.01%-54013F-HRTimelineGroup
CREATIVE FINANCIAL DESIGNS INC /ADV300$1.2K<0.01%013F-HRTimeline
SBI Securities Co., Ltd.120$481<0.01%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY80$321<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.50$200<0.01%013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC23$92<0.01%new13F-HRTimelineGroup
Crewe Advisors LLC20$81<0.01%013F-HRTimeline
Parallel Advisors, LLC9$36<0.01%-113F-HRTimeline
Caitong International Asset Management …2$8<0.01%new13F-HRTimeline