DOSSIER · 13F Holders · Q2 2026

WORKDAY INC

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

CUSIP 98138H951·7 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$100M
visible holders
Holders
7
filers reporting
Concentration
50.42%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

7 institutions reported WORKDAY INC in Q2 2026. IMC-Chicago, LLC leads at 50.4% 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
$50M410K0.01%Q2 2026
02
Optiver Holding B.V.
CIK 0001859606· Market maker
$22M180K0.01%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$15M124K0.01%Q2 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$10M83K0.01%Q2 2026
05
HRT FINANCIAL LP
CIK 0001475597
$2M10K0.01%Q4 2025
06
JPMORGAN CHASE & CO
CIK 0000019617
$12K1000.00%Q2 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025