DOSSIER · 13F Holders · Q3 2026

THERMO FISHER SCIENTIFIC INC

6 institutions still hold THERMO FISHER SCIENTIFIC INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 883556952·6 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$268M
visible holders
Holders
6
filers reporting
Concentration
60.41%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

6 institutions reported THERMO FISHER SCIENTIFIC INC in Q3 2026. IMC-Chicago, LLC leads at 60.4% 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
$162M240K0.03%Q3 2026
02
JPMORGAN CHASE & CO
CIK 0000019617
$85M125K0.00%Q3 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$16M24K0.01%Q3 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$5M7K0.01%Q3 2026
05
SG Americas Securities, LLC
CIK 0001313360
$693K11K0.00%Q1 2026
06
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025