DOSSIER · 13F Holders · Q2 2026

BLACKSTONE SECD LENDING FD

4 institutions still hold BLACKSTONE SECD LENDING FD as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 09261X902·4 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$10M
visible holders
Holders
4
filers reporting
Concentration
42.93%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

4 institutions reported BLACKSTONE SECD LENDING FD in Q2 2026. GROUP ONE TRADING LLC leads at 42.9% 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
$4M183K0.01%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$3M138K0.00%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$3M106K0.00%Q2 2026
04
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025