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Astrotech Corp (ASTC)

CUSIP: 046484309 | NYSE | Technology · Scientific & Technical Instruments | Micro Cap | 43 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
CompareDetailedHistoricalFundsOptionsShort Interest13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13G/ASkylark Partners I, LP1000.0%Newly reportedJun 30, 2026No 13F filer matched
13D/ABML Investment Partners, L.P.00.0%No shares heldOct 3, 2025

Institutional Holders — Q3 2026

FNY Investment Advisers, LLC34,000
0.0% of portfolio›$255.0K
J. Safra Sarasin Holding AG27,300
0.0% of portfolio›$140.0K
LPL Financial LLC20,000
0.0% of portfolio›$150.2K
Geode Capital Management, LLC19,883
0.0% of portfolio›$149.3K
SBI Securities Co., Ltd.120
0.0% of portfolio›$901
Harbour Investments, Inc.11
0.0% of portfolio›$83
StyleTurnoverLocationFiled
FNY Investment Advisers, LLC
34,000$255.0K0.0%GrowthVery HighNew York, NY2026-10-16
J. Safra Sarasin Holding AG
27,300$140.0K0.0%CoreMediumBasel, Switzerland2026-10-26
LPL Financial LLC
20,000$150.2K0.0%IndexVery LowFort Mill, SC2026-11-06
Geode Capital Management, LLC
19,883$149.3K0.0%IndexVery LowBoston, MA2026-11-06
SBI Securities Co., Ltd.
120$9010.0%GrowthLowTokyo, Mexico2026-10-22
Harbour Investments, Inc.
11$830.0%ETFLowMadison, WI2026-11-09
No 13F filer matched
13G/ASkylark Partners I, LP100
0.0% of class · Jun 30, 2026Newly reported
No 13F filer matched
13D/ABML Investment Partners, L.P.0
0.0% of class · Oct 3, 2025No shares held
No 13F filer matched