DOSSIER · 13F Holders · Q2 2026

STMICROELECTRONICS N V

6 institutions still hold STMICROELECTRONICS N V as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 861012952·6 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$156M
visible holders
Holders
6
filers reporting
Concentration
50.12%
Optiver Holding B.V. #1
top holder share
AI Holders Summary · Q2 2026

6 institutions reported STMICROELECTRONICS N V in Q2 2026. Optiver Holding B.V. leads at 50.1% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Optiver Holding B.V.
CIK 0001859606· Market maker
$78M1.0M0.02%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$36M484K0.01%Q2 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$22M296K0.03%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$19M259K0.01%Q2 2026
05
Timothy G. Youngquist 2020 Irrevocable Trust
CIK 0002109159
$11K8K0.00%Q2 2026
06
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025