DOSSIER · 13F Holders · Q2 2026

CONSTELLATION ENERGY CORP

7 institutions still hold CONSTELLATION ENERGY CORP as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 21037T909·7 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$255M
visible holders
Holders
7
filers reporting
Concentration
50.88%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

7 institutions reported CONSTELLATION ENERGY CORP in Q2 2026. IMC-Chicago, LLC leads at 50.9% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
IMC-Chicago, LLC
CIK 0001452861· Market maker
$130M523K0.03%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$74M300K0.10%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$35M142K0.02%Q2 2026
04
JPMORGAN CHASE & CO
CIK 0000019617
$10M40K0.00%Q2 2026
05
HRT FINANCIAL LP
CIK 0001475597
$5M14K0.02%Q4 2025
06
OSAIC HOLDINGS, INC.
CIK 0001677044
$2K10.00%Q2 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025