DOSSIER · 13F Holders · Q2 2026

RIVIAN AUTOMOTIVE INC

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

CUSIP 76954A903·12 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$210M
visible holders
Holders
12
filers reporting
Concentration
49.91%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

12 institutions reported RIVIAN AUTOMOTIVE INC in Q2 2026. IMC-Chicago, LLC leads at 49.9% 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
$105M6.0M0.03%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$35M2.0M0.05%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$34M2.0M0.02%Q2 2026
04
CMT Capital Markets Trading GmbH
CIK 0001632813
$19M1.3M0.20%Q1 2026
05
JPMORGAN CHASE & CO
CIK 0000019617
$8M503K0.00%Q2 2026
06
Capital Markets Trading UK LLP
CIK 0001719165
$5M304K0.06%Q1 2026
07
HRT FINANCIAL LP
CIK 0001475597
$1M70K0.00%Q4 2025
08
StoryOne LLC
CIK 0002079652
$1M1K0.49%Q2 2026
09
CIBC Bancorp USA Inc.
CIK 0001711924
$868K50K0.00%Q2 2026
10
Marathon Trading Investment Management LLC
CIK 0001572748
$257K15K0.01%Q2 2026
11
SG Americas Securities, LLC
CIK 0001313360
$244K166K0.00%Q1 2026
12
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025