DOSSIER · 13F Holders · Q3 2026

LUMENTUM HLDGS INC

8 institutions still hold LUMENTUM HLDGS INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 55024U909·8 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$2.4B
visible holders
Holders
8
filers reporting
Concentration
57.53%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q3 2026

8 institutions reported LUMENTUM HLDGS INC in Q3 2026. IMC-Chicago, LLC leads at 57.5% 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
$1.4B1.4M0.29%Q3 2026
02
SG Americas Securities, LLC
CIK 0001313360
$689M1.2M0.74%Q1 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$104M107K0.06%Q3 2026
04
GROUP ONE TRADING LLC
CIK 0000932540
$101M104K0.14%Q3 2026
05
JPMORGAN CHASE & CO
CIK 0000019617
$85M87K0.00%Q3 2026
06
HRT FINANCIAL LP
CIK 0001475597
$51M52K0.09%Q3 2026
07
OSAIC HOLDINGS, INC.
CIK 0001677044
$87K10.00%Q3 2026
08
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025