DOSSIER · 13F Holders · Q2 2026

THIRD HARMONIC BIO INC

5 institutions still hold THIRD HARMONIC BIO INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 88427A107·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$110K
visible holders
Holders
5
filers reporting
Concentration
97.76%
RHUMBLINE ADVISERS #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported THIRD HARMONIC BIO INC in Q2 2026. RHUMBLINE ADVISERS leads at 97.8% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
RHUMBLINE ADVISERS
CIK 0001115418
$107K20K0.00%Q2 2026
02
GAMMA Investing LLC
CIK 0002010235
$2K4580.00%Q2 2026
03
SBI Securities Co., Ltd.
CIK 0001851815
$0200.00%Q2 2026
04
CALDWELL SUTTER CAPITAL, INC.
CIK 0000702007
$01K0.00%Q2 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025