ASTC · ASTROTECH Corp · Holdings

$6.81 -0.03 (-0.44%) At close · Oct 9

Market Cap

$13.68M

2.01M

Volume · Oct 9 15.96K Avg daily vol (3M) 128.1K

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.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

Quarter:

Holders: 18

Total Value: $1,876,119

Total Shares: 171,965

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 18 13F filers · Δ vs Mar 31, 2026

Top Holder

31.9%

+7.7 pts

Top 5

81.5%

+0.1 pts

Top 10

99.9%

+0.1 pts

HHI

1,760

Moderately concentrated+217

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +2

Institutional value: +217.4%

Shares held: +52.2%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega VANGUARD CAPITAL MANAGEMENT LLC	+13,151	22,356
Mega VANGUARD FIDUCIARY TRUST CO	+3,617	7,956
Mid HARBOUR INVESTMENTS, INC.	+3	11

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Small Caitong International Asset Management Co., Ltd	−4,031	6
Mega GEODE CAPITAL MANAGEMENT, LLC	−3,814	15,533
Mid Tower Research Capital LLC (TRC)	−1,593	667
Large SCS Capital Management LLC	−761	11,000
Mega UBS Group AG	−136	64

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega JANE STREET GROUP, LLC	54,799	$597,856
Mega STATE STREET CORP	11,068	$120,751
Mega JONES FINANCIAL COMPANIES LLLP	886	$9,666
Mega MORGAN STANLEY	77	$840

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)	Open
Small T3 Companies, LLC	13,393	$70,045
Mega Vanguard Global Advisers, LLC	911	$4,764

Filter: New 4 Increased 3 Reduced 6 Sold out 2 Unchanged 5

Showing 18 of 18

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

JANE STREET GROUP, LLC

$597,856

31.87%

54,799

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	12,260	$133,756	22.4%	Defined
Jane Street Global Trading, LLC	42,539	$464,100	77.6%	Defined

J. Safra Sarasin Holding AG

$297,843

15.88%

27,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Bank J. Safra Sarasin LTD	27,300	$297,843	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$243,903

13.00%

22,356

BlackRock, Inc.

$220,251

11.74%

20,188

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	20,188	$220,251	100.0%	Sole

GEODE CAPITAL MANAGEMENT, LLC

$169,464

9.03%

15,533

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	770	$8,400	5.0%	Defined
Held directly	14,763	$161,064	95.0%	Defined

STATE STREET CORP

$120,751

6.44%

11,068

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS TRUST COMPANY	11,068	$120,751	100.0%	Defined

SCS Capital Management LLC

$120,010

6.40%

11,000

VANGUARD FIDUCIARY TRUST CO

$86,799

4.63%

7,956

JONES FINANCIAL COMPANIES LLLP

$9,666

0.52%

886

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	886	$9,666	100.0%	Sole

Tower Research Capital LLC (TRC)

$7,276

0.39%

667

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	667	$7,276	100.0%	Defined

MORGAN STANLEY

$840

0.04%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	77	$840	100.0%	Defined

UBS Group AG

$698

0.04%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	64	$698	100.0%	Defined

Federation des caisses Desjardins du Quebec

$250

0.01%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Desjardins Securities inc.	23	$250	100.0%	Defined

WELLS FARGO & COMPANY/MN

$217

0.01%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	6	$65	30.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	14	$152	70.0%	Defined

HARBOUR INVESTMENTS, INC.

$120

0.01%

SBI Securities Co., Ltd.

$109

0.01%

Caitong International Asset Management Co., Ltd

$65

0.00%

HUNTINGTON NATIONAL BANK

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T3 Global Trading, LLC	13,393	$70,045	100.0%	Sole

Key facts CIK 1001907 CUSIP 046484309 13F (30d) 1 filings 1 filers Visit website Investor relations