Stak Inc. Class ASTAK
13F holders, Q4 2025 (December 31)4holders +1
1new positions
0sold out
1famous investor
$0.40avg. 13F price*
At the end of Q4 2025, 4 institutions reported holding Stak Inc. Class A (STAK) in their 13F filings, up 1 from Q3 2025. 1 opened new positions and 0 sold out. The largest holders were Citadel Advisors ($22K), XTX Topco Ltd ($13K) and Moors & Cabot, Inc. ($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 Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $4K |
| Exits | 0 | $0 |
All 13F filers, Q3 2025 → Q4 2025: 30,798 shares bought and 3,291 shares sold, net +27,507 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 4 holders
| Citadel Advisors | 0.00% | Add +30.1% | 54,125 | $22K |
| XTX Topco Ltd | 0.00% | Add +35.3% | 31,798 | $13K |
| Moors & Cabot, Inc. | 0.00% | New | 10,000 | $4K |
| UBS Group AG | 0.00% | Reduce -68.5% | 1,514 | $604 |
"% of holder's portfolio" is STAK's weight in each manager's 13F, not the share of Stak Inc. Class A the manager owns.