DOSSIER · 13F Holders · Q2 2026

APTORUM GROUP LTD-CLASS A

5 institutions still hold APTORUM GROUP LTD-CLASS A as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G6096M122·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$28K
visible holders
Holders
5
filers reporting
Concentration
67.32%
CITADEL ADVISORS LLC #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported APTORUM GROUP LTD-CLASS A in Q2 2026. CITADEL ADVISORS LLC leads at 67.3% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
CITADEL ADVISORS LLC
CIK 0001423053
$19K24K0.00%Q2 2026
02
CITIGROUP INC
CIK 0000831001
$5K6K0.00%Q2 2026
03
OSAIC HOLDINGS, INC.
CIK 0001677044
$4K6K0.00%Q2 2026
04
SBI Securities Co., Ltd.
CIK 0001851815
$570.00%Q2 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025