DOSSIER · 13F Holders · Q2 2026

FISERV INC

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

CUSIP 337738908·8 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$118M
visible holders
Holders
8
filers reporting
Concentration
30.87%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

8 institutions reported FISERV INC in Q2 2026. IMC-Chicago, LLC leads at 30.9% 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
$36M742K0.01%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$31M626K0.04%Q2 2026
03
Optiver Holding B.V.
CIK 0001859606· Market maker
$28M562K0.01%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$20M402K0.01%Q2 2026
05
TAM Capital Management Inc.
CIK 0001594591
$4M71K1.48%Q2 2026
06
SG Americas Securities, LLC
CIK 0001313360
$5K15K0.00%Q1 2026
07
OSAIC HOLDINGS, INC.
CIK 0001677044
$5K1000.00%Q2 2026
08
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025