ZeroStack Corp.
ZSTK- Exchange
- Nasdaq
- Industry
- Finance Services
- SEC CIK
- 0001790169
In the last 90 days, ZeroStack Corp. insiders filed 1 open-market purchase and 1 sale; 11 institutions reported holding it in 13F filings for Q2 2026, worth $183.8K in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in ZeroStack Corp. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 8
- −3 vs. Q3 2025
- Shares held
- 1.29K
- −5.42K (−80.8%) vs. Q3 2025
- Total value
- $8.00K
- −$101.3K (−92.7%) vs. Q3 2025
- New holders
- 0
- 2 more added
- Sold out
- 3
- 3 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ZSTK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 11 | $183.8K |
| Q1 2026 | 10 | $397.3K |
| Q4 2025 | 8 | $8.00K |
| Q3 2025 | 12 | $109.3K |
| Q2 2025 | 26 | $330.5K |
| Q1 2025 | 24 | $333.9K |
| Q4 2024 | 23 | $566.6K |
| Q3 2024 | 21 | $623.9K |
| Q2 2024 | 20 | $400.2K |
| Q1 2024 | 22 | $751.8K |
| Q4 2023 | 22 | $1.52M |
| Q3 2023 | 23 | $2.01M |
| Q2 2023 | 20 | $1.16M |
| Q1 2023 | 32 | $1.57M |
| Q4 2022 | 39 | $4.00M |
| Q3 2022 | 32 | $3.10M |
| Q2 2022 | 39 | $2.65M |
| Q1 2022 | 28 | $3.64M |
| Q4 2021 | 35 | $7.60M |
| Q3 2021 | 25 | $6.47M |
| Q2 2021 | 10 | $317.0K |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding ZeroStack Corp.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Tower Research Capital LLC (TRC) | 847 | $5.30K | 0.00% | +579+216.0% | Added |
| UBS Group AG | 227 | $1.42K | 0.00% | −5,349−95.9% | Reduced |
| Morgan Stanley | 174 | $1.09K | 0.00% | −127−42.2% | Reduced |
| Bernard Wealth Management Corp. | 12 | $76 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 10 | $63 | 0.00% | −384−97.5% | Reduced |
| Bank of America Corp | 7 | $43 | 0.00% | +2+40.0% | Added |
| Key Financial Inc | 1 | $6 | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 12 | $0 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 0 | $0 | 0.00% | −140−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| BlackRock, Inc. | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Creekmur Asset Management LLC | – | – | – | – | Not filed |