ASTC Astrotech Corp
Astrotech Corp (ASTC) Institutional Ownership
What the institutions did with ASTC 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.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| JANE STREET GROUP, LLC | 54.8K | 31.9% |
| J. Safra Sarasin Holding AG | 27.3K | 15.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 22.4K | 13.0% |
| BlackRock, Inc. | 20.2K | 11.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 15.5K | 9.0% |
| STATE STREET CORP | 11.1K | 6.4% |
| SCS Capital Management LLC | 11.0K | 6.4% |
| VANGUARD FIDUCIARY TRUST CO | 8.0K | 4.6% |
| JONES FINANCIAL COMPANIES LLLP | 886 | 0.5% |
| Tower Research Capital LLC (TRC) | 667 | 0.4% |
| MORGAN STANLEY | 77 | 0.0% |
| UBS Group AG | 64 | 0.0% |
| Federation des caisses Desjardins du Quebec | 23 | 0.0% |
| WELLS FARGO & COMPANY/MN | 20 | 0.0% |
| HARBOUR INVESTMENTS, INC. | 11 | 0.0% |
| SBI Securities Co., Ltd. | 10 | 0.0% |
| Caitong International Asset Management Co., Ltd | 6 | 0.0% |
| HUNTINGTON NATIONAL BANK | 1 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| JANE STREET GROUP, LLC | New | 0 | 54.8K | +54.8K |
| T3 Companies, LLC | Sold Out | 13.4K | 0 | -13.4K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 9.2K | 22.4K | +13.2K |
| STATE STREET CORP | New | 0 | 11.1K | +11.1K |
| Caitong International Asset Management Co., Ltd | Reduced | 4.0K | 6 | -4.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 19.3K | 15.5K | -3.8K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 4.3K | 8.0K | +3.6K |
| Tower Research Capital LLC (TRC) | Reduced | 2.3K | 667 | -1.6K |
| Vanguard Global Advisers, LLC | Sold Out | 911 | 0 | -911 |
| JONES FINANCIAL COMPANIES LLLP | New | 0 | 886 | +886 |
| SCS Capital Management LLC | Reduced | 11.8K | 11.0K | -761 |
| UBS Group AG | Reduced | 200 | 64 | -136 |
| MORGAN STANLEY | New | 0 | 77 | +77 |
| HARBOUR INVESTMENTS, INC. | Increased | 8 | 11 | +3 |
| SBI Securities Co., Ltd. | Reduced | 13 | 10 | -3 |
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.