DOSSIER · 13F Holders · Q3 2026

FISERV INC

7 institutions still hold FISERV INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 337738958·7 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$64M
visible holders
Holders
7
filers reporting
Concentration
50.29%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

7 institutions reported FISERV INC in Q3 2026. IMC-Chicago, LLC leads at 50.3% 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
$32M715K0.01%Q3 2026
02
Optiver Holding B.V.
CIK 0001859606· Market maker
$18M362K0.00%Q2 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$7M158K0.01%Q3 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$5M114K0.00%Q3 2026
05
HRT FINANCIAL LP
CIK 0001475597
$1M18K0.00%Q4 2025
06
Maven Securities LTD
CIK 0001633046
$653K13K0.01%Q2 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025