ASTC
ASTROTECH CorpCompany with tickers: ASTC
CIK
1001907
CUSIP
046484309
Shares Outstanding
1,799,299
Website
https://www.astrotechcorp.com
13F Activity (30d)
5 filings
5 filers
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.
Holders: 12
Total Value: $484,276
Total Shares: 92,597
Institutional Ownership Trend
16 quarters
Holder Concentration
Across 12 13F filers · Δ vs Dec 31, 2025Top Holder
29.5%
−20.1 pts
Top 5
87.5%
−12.5 pts
Top 10
100.0%
−0.0 pts
HHI
1,823
Moderately concentrated−1,858
Quarterly Activity
vs Dec 31, 2025
New
7
Increased
3
Decreased
0
Sold Out
3
Unchanged
2
Holder count:
+4
Institutional value:
+120.6%
Shares held:
+45.9%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mid Tower Research Capital LLC (TRC) | +1,746 | 2,260 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +567 | 19,347 | |
| Mid SBI Securities Co., Ltd. | +10 | 13 |
Top Sellers
vs Dec 31, 2025No qualifying movers this quarter.
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mid J. Safra Sarasin Holding AG | 27,300 | $142,779 | |
| Small T3 Companies, LLC | 13,393 | $70,045 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 9,205 | $48,142 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 4,339 | $22,692 | |
| Small Caitong International Asset Management Co., Ltd | 4,037 | $21,113 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid DRW Securities, LLC | 31,464 | $108,865 | |
| Mega UBS Group AG | 903 | $3,124 | |
| Mega CITIGROUP INC | 6 | $20 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid J. Safra Sarasin Holding AG | $142,779 | 29.48% | 27,300 | Shares | Defined | 2026-05-04 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $101,184 | 20.89% | 19,347 | Shares | Defined | 2026-05-15 | ||||
| Small T3 Companies, LLC | $70,045 | 14.46% | 13,393 | Shares | Sole | 2026-05-07 | ||||
| Mid SCS Capital Management LLC | $61,510 | 12.70% | 11,761 | Shares | Sole | 2026-05-11 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $48,142 | 9.94% | 9,205 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $22,692 | 4.69% | 4,339 | Shares | Defined | 2026-05-08 | ||||
| Small Caitong International Asset Management Co., Ltd | $21,113 | 4.36% | 4,037 | Shares | Sole | 2026-05-11 | ||||
| Mid Tower Research Capital LLC (TRC) | $11,819 | 2.44% | 2,260 | Shares | Defined | 2026-05-15 | ||||
| Mega Vanguard Global Advisers, LLC | $4,764 | 0.98% | 911 | Shares | Defined | 2026-05-08 | ||||
| Large Federation des caisses Desjardins du Quebec | $120 | 0.02% | 23 | Shares | Defined | 2026-05-14 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $67 | 0.01% | 13 | Shares | Defined | 2026-04-28 | ||||
| Mid HARBOUR INVESTMENTS, INC. | $41 | 0.01% | 8 | Shares | Sole | 2026-05-15 | ||||
| No holders match your search. | ||||||||||