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Seres Therapeutics, Inc. logo

Seres Therapeutics, Inc. (MCRB) Stock Ticker

NASDAQ: MCRB · Healthcare · Biotechnology
$3.52-2.76%
USD · as of 2026-09-27 · market cap $34.1M
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MCRB right now

Options expect by Oct 6±11.0%
Options expect by Oct 29±22.8%
Priced in for Nov 4 earnings±25.0%
IV rank (30-day)54% · fair
From Tickr's live models · 2026-09-29. Not investment advice.

Market factors today

Tickr 500 vs S&P 500+0.49%+1.0% MTD
Momentum L/S+1.35%+15.1% MTD
High-beta momo L/S+1.46%+22.2% MTD
Rate sensitivity L/S+1.91%+6.9% MTD
Oil sensitivity L/S-2.54%-5.3% MTD
Unprofitable tech-1.43%+3.7% MTD

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About Seres Therapeutics, Inc.

Seres Therapeutics, Inc. is a pioneering microbiome therapeutics firm dedicated to engineering bacterial consortia that modulate host cells and tissues to combat various diseases. Their flagship therapeutic, SER-109, an oral microbiome treatment, has successfully concluded Phase III clinical trials for the management of Clostridioides difficile infection (CDI). The company's pipeline further encompasses SER-155, a synthetically cultured bacterial formulation currently undergoing Phase Ib evaluation. This candidate aims to mitigate the risk of gastrointestinal and bloodstream infections, alongside graft-versus-host disease, in vulnerable patients undergoing allogeneic hematopoietic stem cell or solid organ transplantation. Additionally, Seres Therapeutics is advancing SER-287 and SER-301, both in Phase Ib for ulcerative colitis, as well as SER-401, which targets metastatic melanoma, and SER-262, also directed at Clostridioides difficile infection. Seres maintains strategic alliances through licensing and collaboration agreements with entities such as Nestec Ltd. and Memorial Sloan Kettering Cancer Center. Established in 2010, the company previously operated as Seres Health, Inc. before adopting its current name in May 2015, and it maintains its principal offices in Cambridge, Massachusetts.

MCRB stock facts

Ticker symbolMCRB
ExchangeNASDAQ Global Select
SectorHealthcare
IndustryBiotechnology
Market cap$34.1M
CEORichard N. Kender
Employees66
HeadquartersCambridge, MA, US
IPO date2015-06-26
Websitewww.serestherapeutics.com

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FAQ

What is the ticker symbol for Seres Therapeutics, Inc.?

The ticker symbol for Seres Therapeutics, Inc. is MCRB, listed on the NASDAQ Global Select.

What is MCRB?

Seres Therapeutics, Inc. is a pioneering microbiome therapeutics firm dedicated to engineering bacterial consortia that modulate host cells and tissues to combat various diseases. Their flagship therapeutic, SER-109, an oral microbiome treatment, has successfully concluded Phase III clinical trials for the management of Clostridioides difficile infection (CDI). The company's pipeline further…

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