Classover Holdings, Inc. (KIDZ) Institutional Ownership

Ownership Summary

Classover Holdings, Inc. (NASDAQ:KIDZ) currently has 23 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• Institutional ownership in Classover Holdings edged up to 91511600.0% in December 2025, compared to 84371900.0% in September 2025.
• The company experienced a 34.06% quarterly change in institutional shares held, alongside an increase of 360.00% in total owners annually.
• The latest 13F cycle for Classover Holdings reveals that of 23 total investors, 10 funds grew their exposure, whereas 4 reduced theirs and 9 made no changes.
• This class of investors increased its holdings in Classover Holdings to 1.83Mn shares for the 13F-cycle ending December 2025, up by 464.96K shares quarter on quarter, and down 2.08Mn shares year over year.
• The top institutional stake in Classover Holdings as of December 31, 2025 belongs to CITADEL ADVISORS LLC, which owns 483.97K shares, or 24198450.00% of the company.
• Among the most significant buyers of Classover Holdings during December 2025 were CITADEL ADVISORS LLC (483.97K), Limestone Investment Advisors LP (97.50K), JANE STREET GROUP, LLC (50.04K), HIGHBRIDGE CAPITAL MANAGEMENT LLC (26.70K), HRT FINANCIAL LP (20.36K).
• Leading sellers of Classover Holdings stock in December 2025 included Polar Asset Management Partners Inc. (237.50K), UBS Group AG (12.94K), SIMPLEX TRADING, LLC (3.79K), GROUP ONE TRADING LLC (1.73K).
• The top 10 institutional holders of Classover Holdings for the quarter ending December 2025 included CITADEL ADVISORS LLC (483.97K), Harraden Circle Investments, LLC (241.62K), Polar Asset Management Partners Inc. (237.50K), VANGUARD GROUP INC (198.58K), GEODE CAPITAL MANAGEMENT, LLC (122.35K), Limestone Investment Advisors LP (97.50K), PERISCOPE CAPITAL INC. (90.00K), Sandia Investment Management LP (90.00K), JANE STREET GROUP, LLC (50.04K), BlackRock, Inc. (43.43K).