Koss Corp (KOSS) Institutional Ownership

Ownership Summary

Koss Corp (NASDAQ:KOSS) currently has 23 active institutional owners and shareholders as of today (September 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• The collective stake of institutional investors in Koss moved to 5.7% in September 2025, a shift down from the 35.9% reported for June 2025.
• Quarterly data indicates a 6.97% shift in institutional share volume, and the annual owner count reflects an increase of 4.55%.
• During the quarter, 8 institutions bought more Koss shares, 7 sold shares, and 8 of the 23 total investors held their position steady.
• Collectively, institutional investors increased their stake in Koss to 538.46K shares as of September 2025, a change that is up by 35.10K shares quarter on quarter and up 115.75K shares year over year.
• With 245.71K shares, VANGUARD GROUP INC commands the largest institutional position in Koss as of September 30, 2025, equating to 2.60% of the company.
• Among the most significant buyers of Koss during September 2025 were TWO SIGMA INVESTMENTS, LP (13.36K), DIMENSIONAL FUND ADVISORS LP (12.66K), GOLDMAN SACHS GROUP INC (6.24K), UBS Group AG (5.86K), CITIGROUP INC (950).
• Leading sellers of Koss stock in September 2025 included MORGAN STANLEY (1.61K), Tower Research Capital LLC (TRC) (1.22K), NORTHERN TRUST CORP (922), VANGUARD GROUP INC (802), ROYAL BANK OF CANADA (425).
• The top 10 institutional holders of Koss for the quarter ending September 2025 included VANGUARD GROUP INC (245.71K), BlackRock, Inc. (87.85K), GEODE CAPITAL MANAGEMENT, LLC (58.44K), DIMENSIONAL FUND ADVISORS LP (23.34K), STATE STREET CORP (17.97K), GOLDMAN SACHS GROUP INC (17.01K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (14.56K), NORTHERN TRUST CORP (14.42K), UBS Group AG (13.61K), TWO SIGMA INVESTMENTS, LP (13.36K).