DOSSIER · 13F Holders · Q2 2026

WHITEHORSE FIN INC

3 institutions still hold WHITEHORSE FIN INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 96524V956·3 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$34K
visible holders
Holders
3
filers reporting
Concentration
58.82%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

3 institutions reported WHITEHORSE FIN INC in Q2 2026. GROUP ONE TRADING LLC leads at 58.8% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
GROUP ONE TRADING LLC
CIK 0000932540
$20K3K0.00%Q2 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$14K2K0.00%Q2 2026
03
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025