DOSSIER · 13F Holders · Q2 2026

CANADIAN SOLAR INC

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

CUSIP 136635909·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$38M
visible holders
Holders
5
filers reporting
Concentration
65.05%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported CANADIAN SOLAR INC in Q2 2026. GROUP ONE TRADING LLC leads at 65.1% 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
$25M1.6M0.04%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$10M594K0.00%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$4M225K0.00%Q2 2026
04
Sender Co & Partners, Inc.
CIK 0001659380
$288K18K0.08%Q2 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025