DOSSIER · 13F Holders · Q2 2026

UPSTART HLDGS INC

6 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 91680M957·6 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$68M
visible holders
Holders
6
filers reporting
Concentration
45.99%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

6 institutions reported UPSTART HLDGS INC in Q2 2026. IMC-Chicago, LLC leads at 46.0% 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
$31M879K0.01%Q2 2026
02
Optiver Holding B.V.
CIK 0001859606· Market maker
$18M514K0.00%Q2 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$7M206K0.01%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$6M167K0.00%Q2 2026
05
HRT FINANCIAL LP
CIK 0001475597
$5M117K0.02%Q4 2025
06
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025