STAK
STAK Inc.Company with tickers: STAK
CIK
2002453
CUSIP
G84092116
Shares Outstanding
10,010,349
13F Activity (30d)
5 filings
5 filers
Holders: 5
Total Value: $117,892
Total Shares: 117,892
Institutional Ownership Trend
Holder Concentration
Across 5 13F filers · Δ vs Dec 31, 2025Top Holder
46.1%
−9.4 pts
Top 5
100.0%
0.0 pts
Top 10
100.0%
0.0 pts
HHI
3,986
Highly concentrated
−273
Quarterly Activity
vs Dec 31, 2025
New
4
Increased
1
Decreased
0
Sold Out
3
Unchanged
0
Holder count:
+1
Institutional value:
+203.3%
Shares held:
+21.0%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega UBS Group AG | +6,575 | 8,089 |
Top Sellers
vs Dec 31, 2025No qualifying movers this quarter.
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega JANE STREET GROUP, LLC | 54,403 | $54,403 | |
| Mega MORGAN STANLEY | 50,000 | $50,000 | |
| Mid Tower Research Capital LLC (TRC) | 2,900 | $2,900 | |
| Mega WELLS FARGO & COMPANY/MN | 2,500 | $2,500 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | 54,125 | $21,595 | |
| Mid XTX Topco Ltd | 31,798 | $12,687 | |
| Mid Moors & Cabot, Inc. | 10,000 | $3,990 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega JANE STREET GROUP, LLC | $54,403 | 46.15% | 54,403 | Shares | Defined | 2026-05-12 | ||||
| Mega MORGAN STANLEY | $50,000 | 42.41% | 50,000 | Shares | Defined | 2026-05-15 | ||||
| Mega UBS Group AG | $8,089 | 6.86% | 8,089 | Shares | Defined | 2026-05-05 | ||||
| Mid Tower Research Capital LLC (TRC) | $2,900 | 2.46% | 2,900 | Shares | Other | 2026-05-15 | ||||
| Mega WELLS FARGO & COMPANY/MN | $2,500 | 2.12% | 2,500 | Shares | Defined | 2026-05-11 | ||||
| No holders match your search. | ||||||||||