DOSSIER · 13F Holders · Q2 2026

UPSTART HLDGS INC

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

CUSIP 91680M907·7 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$118M
visible holders
Holders
7
filers reporting
Concentration
49.72%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

7 institutions reported UPSTART HLDGS INC in Q2 2026. IMC-Chicago, LLC leads at 49.7% 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
$59M1.7M0.01%Q2 2026
02
Optiver Holding B.V.
CIK 0001859606· Market maker
$37M1.0M0.01%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$11M324K0.01%Q2 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$9M256K0.01%Q2 2026
05
Sender Co & Partners, Inc.
CIK 0001659380
$2M63K0.65%Q2 2026
06
OSAIC HOLDINGS, INC.
CIK 0001677044
$59910.00%Q2 2026
07
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025