DOSSIER · 13F Holders · Q4 2025

SERES THERAPEUTICS INC

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

CUSIP 81750R901·3 13F holders·last filed Dec 31, 2025
Market cap
13F value held
$1M
visible holders
Holders
3
filers reporting
Concentration
83.39%
HRT FINANCIAL LP #1
top holder share
AI Holders Summary · Q4 2025

3 institutions reported SERES THERAPEUTICS INC in Q4 2025. HRT FINANCIAL LP leads at 83.4% 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
$935K63K0.00%Q4 2025
02
SIMPLEX TRADING, LLC
CIK 0001488542
$131K17K0.00%Q2 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$55K7K0.00%Q2 2026