ZSTK ZEROSTACK CORP
ZEROSTACK CORP (ZSTK) Institutional Ownership
What the institutions did with ZSTK last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 25.4K | 41.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 21.0K | 34.3% |
| VANGUARD FIDUCIARY TRUST CO | 12.6K | 20.6% |
| Tower Research Capital LLC (TRC) | 1.7K | 2.8% |
| UBS Group AG | 440 | 0.7% |
| ROYAL BANK OF CANADA | 12 | 0.0% |
| OSAIC HOLDINGS, INC. | 12 | 0.0% |
| MORGAN STANLEY | 7 | 0.0% |
| BARCLAYS PLC | 3 | 0.0% |
| CITIGROUP INC | 1 | 0.0% |
| Key Financial Inc | 1 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 25.3K | 21.0K | -4.3K |
| Tower Research Capital LLC (TRC) | New | 0 | 1.7K | +1.7K |
| UBS Group AG | Reduced | 666 | 440 | -226 |
| MORGAN STANLEY | Reduced | 173 | 7 | -166 |
| Sound Income Strategies, LLC | Sold Out | 12 | 0 | -12 |
| Bernard Wealth Management Corp. | Sold Out | 12 | 0 | -12 |
| BARCLAYS PLC | New | 0 | 3 | +3 |
| CITIGROUP INC | New | 0 | 1 | +1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.