DOSSIER · 13F Holders · Q2 2026

MOSAIC CO NEW CALL

7 institutions still hold MOSAIC CO NEW CALL as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 61945C903·7 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$66M
visible holders
Holders
7
filers reporting
Concentration
33.43%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

7 institutions reported MOSAIC CO NEW CALL in Q2 2026. GROUP ONE TRADING LLC leads at 33.4% 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
$22M1.0M0.03%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$20M945K0.00%Q2 2026
03
THOMIST CAPITAL MANAGEMENT, LP
CIK 0001767809
$11M500K3.37%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$8M388K0.00%Q2 2026
05
JPMORGAN CHASE & CO
CIK 0000019617
$3M150K0.00%Q2 2026
06
Universal- Beteiligungs- und Servicegesellschaft mbH
CIK 0002057170
$2M550K0.00%Q2 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025