DOSSIER · 13F Holders · Q1 2026
HSCSW

HEART TEST LABORATORIES INC

4 institutions still hold HEART TEST LABORATORIES INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 42254E112·4 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$41K
visible holders
Holders
4
filers reporting
Concentration
78.14%
Clear Street Group Inc. #1
top holder share
AI Holders Summary · Q1 2026

4 institutions reported HSCSW in Q1 2026. Clear Street Group Inc. leads at 78.1% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Clear Street Group Inc.
CIK 0001881567
$32K271K0.00%Q1 2026
02
CITADEL ADVISORS LLC
CIK 0001423053
$9K196K0.00%Q4 2025
03
UBS Group AG
CIK 0001610520
$711K0.00%Q1 2026
04
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025