Stak Inc. Class ASTAK
13F holders, Q3 2025 (September 30)3holders +1
2new positions
1sold out
1famous investor
$0.84avg. 13F price*
At the end of Q3 2025, 3 institutions reported holding Stak Inc. Class A (STAK) in their 13F filings, up 1 from Q2 2025. 2 opened new positions and 1 sold out. The largest holders were Citadel Advisors ($35K), XTX Topco Ltd ($20K) and UBS Group AG ($4K). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Stak Inc. Class A
- CUSIP
- G84092116
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $55K |
| Exits | 1 | $29K |
All 13F filers, Q2 2025 → Q3 2025: 65,125 shares bought and 24,027 shares sold, net +41,098 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 3 holders
| Citadel Advisors | 0.00% | New | 41,614 | $35K |
| XTX Topco Ltd | 0.00% | New | 23,511 | $20K |
| UBS Group AG | 0.00% | Reduce -61.5% | 4,805 | $4K |
"% of holder's portfolio" is STAK's weight in each manager's 13F, not the share of Stak Inc. Class A the manager owns.