Classover Holdings, Inc. (KIDZ) Ownership
KIDZ ownership summary
as of October 18, 2026- Institutions
- 0.4% of shares outstanding
- Insiders
- 0.13% of shares outstanding
- Shares outstanding
- 860K
- Float
- 859K shares available to trade
- Short interest
- 11.83% 102K shares short
- Days to cover
- 0.16 short interest up 79.8% vs prior month
- Institutions 0.42%
- Insiders 0.13%
- Other investors 99.45%
KIDZ top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 0.07% | 8,745 | $14,254 | −1 (−0.0%) | June 30, 2026 |
| 2 | Tower Research Capital LLC | 0.01% | 669 | $1,090 | +669 (0.0%) | June 30, 2026 |
| 3 | SBI Securities Co Ltd | <0.01% | 10 | $16 | +10 (0.0%) | June 30, 2026 |
| 4 | State Street Corp | 0.00% | — | — | −43,300 (−100.0%) | March 31, 2026 |
| 5 | Periscope Capital Inc. | 0.00% | — | — | −90,000 (−100.0%) | March 31, 2026 |
| 6 | Susquehanna International Group, LLP | 0.00% | — | — | −13,433 (−100.0%) | March 31, 2026 |
| 7 | Jane Street Group LLC | 0.00% | — | — | −50,042 (−100.0%) | March 31, 2026 |
| 8 | Wolverine Asset Management LLC | 0.00% | — | — | −1 (−100.0%) | June 30, 2026 |
| 9 | Northern Trust Corp | 0.00% | — | — | −11,113 (−100.0%) | March 31, 2026 |
| 10 | Vanguard Capital Management, LLC | 0.00% | — | — | −268 (−100.0%) | June 30, 2026 |
| 11 | SIMPLEX TRADING, LLC | 0.00% | — | — | −71 (−100.0%) | March 31, 2026 |
| 12 | Citadel Advisors Llc | 0.00% | — | — | −483,969 (−100.0%) | March 31, 2026 |
| 13 | UBS Group AG | 0.00% | — | — | −214 (−100.0%) | June 30, 2026 |
| 14 | Group One Trading, LLC | 0.00% | — | — | −28 (−100.0%) | June 30, 2026 |
| 15 | Vanguard Fiduciary Trust Co | 0.00% | — | — | −129 (−100.0%) | June 30, 2026 |
| 16 | Geode Capital Management, LLC | 0.00% | — | — | −122,351 (−100.0%) | March 31, 2026 |
| 17 | Limestone Investment Advisors LP | 0.00% | — | — | −97,500 (−100.0%) | March 31, 2026 |
| 18 | Harraden Circle Investments LLC | 0.00% | — | — | −483 (−100.0%) | June 30, 2026 |
| 19 | Virtu Financial LLC | 0.00% | — | — | −38,143 (−100.0%) | March 31, 2026 |
| 20 | Highbridge Capital Management, LLC | 0.00% | — | — | −26,701 (−100.0%) | March 31, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 2 holders added 679 shares and 18 cut 978K.
KIDZ top mutual fund and ETF holders
1 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.32% | 2,765 | $4,507 | +2,373 (+605.4%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
KIDZ shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns KIDZ
Institutional investors own 0.4% of Classover's shares and insiders 0.13%. The largest holder is BlackRock Inc with 0.07% of the shares (8,745), as of June 30, 2026. Among the top 20 institutions, 2 added shares and 18 reduced their stake in the latest filings. Short interest is 11.83% of the float, or 0.16 days of average trading volume. The share count fell 99.7% since 2014.
Related: KIDZ key metrics. See the KIDZ stock overview for the latest quote and news.
KIDZ ownership FAQ
Who owns the most Classover stock?
The largest shareholders of Classover are BlackRock Inc (0.07%), Tower Research Capital LLC (0.01%), SBI Securities Co Ltd (<0.01%), State Street Corp (0.00%), Periscope Capital Inc. (0.00%).
What percentage of Classover is owned by institutions?
Institutions hold 0.4% of Classover's shares outstanding; insiders hold 0.13%.
Which funds own Classover?
The largest fund holders of Classover are Fidelity Extended Market Index (0.32%).
What is Classover's short interest?
102K shares of Classover were sold short, 11.83% of the float; at the average daily volume it would take 0.16 days to cover.
How many shares of Classover are outstanding?
Classover has 860K shares outstanding, of which 859K are in the public float.