ZSTK · ZeroStack Corp. · Holdings
$4.88
+0.02 (+0.41%)
At close · Oct 5
Return incl. dividend (before tax)
Going-concern doubt
— flagged Jul 31, 2026
Substantial doubt about the company's ability to continue as a going concern.
“These factors raise substantial doubt about the Company's ability to continue as a going concern within one year after the date these financial statements are issued. Although management has implemented the plans described above, it cannot conclude that such plans are probable of effectively mitigating the conditions and events that raise substantial doubt. Accordingly, substantial doubt exists about the Company's ability to continue as a going concern for the one-year period following the issuance of these financial statements.”View the 10-Q filed Jul 31, 2026
Market Cap
$70.57M
Shares
17.49M
Volume · Oct 5
18.5K
Avg daily vol (3M)
490.2K
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
Holders: 11
Total Value: $183,864
Total Shares: 61,288
Institutional Ownership Trend
4 quarters
Holder Concentration
Across 11 13F filers · Δ vs Mar 31, 2026Top Holder
41.5%
+1.9 pts
Top 5
99.9%
+0.0 pts
Top 10
100.0%
−0.0 pts
HHI
3,331
Highly concentrated−174
Quarterly Activity
vs Mar 31, 2026
New
3
Increased
0
Decreased
3
Sold Out
2
Unchanged
5
Holder count:
+1
Institutional value:
-53.7%
Shares held:
-4.7%
Top Buyers
vs Mar 31, 2026No qualifying movers this quarter.
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | −4,327 | 20,994 | |
| Mega UBS Group AG | −226 | 440 | |
| Mega MORGAN STANLEY | −166 | 7 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mid Tower Research Capital LLC (TRC) | 1,730 | $5,190 | |
| Mega BARCLAYS PLC | 3 | $9 | |
| Mega CITIGROUP INC | 1 | $3 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Small Bernard Wealth Management Corp. | 12 | $74 | |
| Mid Sound Income Strategies, LLC | 12 | $74 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $76,320 | 41.51% | 25,440 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | $62,982 | 34.25% | 20,994 | Shares | 2026-08-12 | |
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $37,944 | 20.64% | 12,648 | Shares | 2026-08-13 | |
| Mid Tower Research Capital LLC (TRC) | $5,190 | 2.82% | 1,730 | Shares | 2026-08-11 | |
| Mega UBS Group AG | $1,320 | 0.72% | 440 | Shares | 2026-08-13 | |
| Mega ROYAL BANK OF CANADA Bank | $36 | 0.02% | 12 | Shares | 2026-08-14 | |
| Large OSAIC HOLDINGS, INC. | $36 | 0.02% | 12 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY | $21 | 0.01% | 7 | Shares | 2026-08-13 | |
| Mega BARCLAYS PLC | $9 | 0.00% | 3 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC | $3 | 0.00% | 1 | Shares | 2026-08-03 | |
| Small Key Financial Inc | $3 | 0.00% | 1 | Shares | 2026-07-24 |