DOSSIER · 13F Holders · Q4 2025

ANAPTYSBIO INC

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

CUSIP 032724956·3 13F holders·last filed Dec 31, 2025
Market cap
—
13F value held
$3M
visible holders
Holders
3
filers reporting
Concentration
92.01%
HRT FINANCIAL LP #1
top holder share
AI Holders Summary · Q4 2025

3 institutions reported ANAPTYSBIO INC in Q4 2025. HRT FINANCIAL LP leads at 92.0% 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
$3M53K0.01%Q4 2025
02
SIMPLEX TRADING, LLC
CIK 0001488542
$221K4K0.00%Q3 2026
03
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025