DOSSIER · 13F Holders · Q4 2025

IRHYTHM TECHNOLOGIES INC

4 institutions still hold IRHYTHM TECHNOLOGIES INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 450056956·4 13F holders·last filed Dec 31, 2025
Market cap
13F value held
$2M
visible holders
Holders
4
filers reporting
Concentration
72.90%
HRT FINANCIAL LP #1
top holder share
AI Holders Summary · Q4 2025

4 institutions reported IRHYTHM TECHNOLOGIES INC in Q4 2025. HRT FINANCIAL LP leads at 72.9% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
HRT FINANCIAL LP
CIK 0001475597
$2M10K0.01%Q4 2025
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$654K6K0.00%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$12K1000.00%Q2 2026
04
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025