Skip to main content
MCRB logo

Seres Therapeutics, Inc. (MCRB)

For informational purposes only. Not financial advice. Analysis by Sedat Aydin, Founder & Editor-in-Chief | AI-powered analysis. Data sourced from SEC filings and institutional-grade financial providers. Editorially reviewed. Not financial advice.

Seres Therapeutics, Inc. (MCRB) trades at $9.33 with AI Score 51/100 (Hold). Seres Therapeutics, Inc. is a microbiome therapeutics platform company focused on developing bacterial consortia to treat diseases like Clostridium difficile infection (CDI). Market cap: $89.44M, Sector: Healthcare.

Last analyzed: Feb 9, 2026
Seres Therapeutics, Inc. is a microbiome therapeutics platform company focused on developing bacterial consortia to treat diseases like Clostridium difficile infection (CDI). Their lead product, SER-109, has completed Phase III clinical trials for CDI, and they have several other candidates in various stages of development.
51/100 AI Score MCap $89.44M Vol 22.7K

Seres Therapeutics, Inc. (MCRB) Healthcare & Pipeline Overview

CEOThomas J. DesRosier
Employees103
HeadquartersCambridge, US
IPO Year2015

Seres Therapeutics pioneers microbiome therapeutics, leveraging its innovative platform to develop novel treatments for diseases like Clostridium difficile infection, offering a unique approach to modulating the gut microbiome and improving patient outcomes with a P/E ratio of 22.67.

Data Provenance | Financial Data Quantitative Analysis NASDAQ Analysis: Feb 9, 2026

Investment Thesis

Seres Therapeutics presents a notable research candidate due to its pioneering position in the rapidly growing field of microbiome therapeutics. The successful Phase III trial of SER-109 for Clostridium difficile infection (CDI) provides a strong foundation for potential FDA approval and commercialization, addressing a significant unmet medical need. The company's pipeline of additional microbiome therapeutics, including SER-155, SER-287, SER-301, SER-401 and SER-262, offers further growth potential across various indications. With a current market capitalization of $0.13 billion and a profit margin of 1536.8%, Seres demonstrates significant potential for value creation as it advances its clinical programs and commercializes its lead product. Upcoming milestones include potential FDA approval for SER-109 and continued progress in clinical trials for its other pipeline candidates, which could serve as major catalysts for stock appreciation.

Based on FMP financials and quantitative analysis

Key Highlights

  • SER-109 completed Phase III clinical trials for the treatment of Clostridium difficile infection (CDI), demonstrating significant efficacy.
  • Developing SER-155, a cultivated bacteria microbiome drug, which is Phase Ib clinical trial to reduce incidences of gastrointestinal infections, bloodstream infections, and graft versus host diseases.
  • Profit Margin of 1536.8% indicates strong potential profitability upon commercialization of key products.
  • Market Cap of $0.13B suggests significant growth potential compared to established pharmaceutical companies.
  • P/E Ratio of 22.67 reflecting investor expectations for future earnings growth.

Competitors & Peers

Strengths

  • Pioneering microbiome therapeutics platform.
  • Advanced clinical programs, including SER-109.
  • Strategic collaborations with Nestec and Memorial Sloan Kettering.
  • Strong intellectual property portfolio.

Weaknesses

  • Reliance on clinical trial outcomes.
  • Limited commercialization experience.
  • High research and development costs.
  • Negative Gross Margin of -5010.5%

Catalysts

  • Potential FDA approval and commercial launch of SER-109 for Clostridium difficile infection (CDI).
  • Progress in Phase Ib clinical trial of SER-155 for immunocompromised patients.
  • Advancement of SER-287 and SER-301 in Phase Ib trials for ulcerative colitis.
  • Development of SER-401 for patients with metastatic melanoma.
  • Continued research and development of SER-262 for Clostridioides difficile infection.

Risks

  • Clinical trial failures for pipeline candidates.
  • Regulatory delays or non-approval of SER-109 and other therapies.
  • Competition from established pharmaceutical companies and other microbiome therapeutics developers.
  • High cash burn rate and need for additional financing.
  • Changes in the regulatory landscape for microbiome-based therapies.

Growth Opportunities

  • SER-109 Commercialization: Following successful Phase III trials, the commercialization of SER-109 for Clostridium difficile infection (CDI) represents a significant near-term growth opportunity. The market for CDI treatment is substantial, with an estimated market size of over $600 million annually. Successful market penetration and adoption of SER-109 could generate substantial revenue growth for Seres Therapeutics within the next 1-2 years.
  • SER-155 Development: The ongoing Phase Ib clinical trial of SER-155 targeting the reduction of gastrointestinal infections, bloodstream infections, and graft versus host diseases in immunocompromised patients presents a promising growth avenue. The market for preventing infections in immunocompromised patients is estimated to be over $1 billion. Positive clinical data and subsequent regulatory approval could drive significant value creation over the next 3-5 years.
  • Ulcerative Colitis Program (SER-287 & SER-301): The development of SER-287 and SER-301 for the treatment of ulcerative colitis represents a substantial long-term growth opportunity. The ulcerative colitis market is estimated to reach $7.5 billion by 2028. Advancing these programs through clinical trials and achieving regulatory approval could unlock significant revenue potential over the next 5-7 years.
  • Oncology Program (SER-401): The development of SER-401 for patients with metastatic melanoma offers a potential entry into the oncology market, a high-value therapeutic area. The market for melanoma treatments is projected to exceed $10 billion by 2030. Successful clinical development and commercialization of SER-401 could contribute significantly to Seres's long-term growth prospects.
  • Partnerships and Collaborations: Seres's existing license and collaboration agreements with Nestec Ltd. and Memorial Sloan Kettering Cancer Center provide opportunities for further expansion and development of its microbiome therapeutics platform. Strategic partnerships can accelerate research and development efforts, broaden the company's pipeline, and provide access to new markets and technologies, driving long-term growth.

Opportunities

  • Expanding pipeline into new therapeutic areas.
  • Securing regulatory approvals for SER-109 and other candidates.
  • Establishing additional strategic partnerships.
  • Capitalizing on the growing interest in microbiome-based therapies.

Threats

  • Clinical trial failures.
  • Regulatory hurdles and delays.
  • Competition from other biotechnology companies.
  • Changes in the regulatory landscape for microbiome therapeutics.

Competitive Advantages

  • Proprietary Microbiome Platform: Seres's unique platform for developing bacterial consortia provides a competitive advantage.
  • Clinical Trial Data: Positive clinical trial results, particularly for SER-109, create a barrier to entry.
  • Intellectual Property: Patents and exclusive licenses protect Seres's technologies and products.
  • Strategic Collaborations: Partnerships with Nestec and Memorial Sloan Kettering enhance research and development capabilities.

About MCRB

Seres Therapeutics, Inc., founded in 2010 and headquartered in Cambridge, Massachusetts, is a leading microbiome therapeutics platform company dedicated to developing bacterial consortia that functionally interact with host cells and tissues to treat a variety of diseases. The company's foundational work centers on understanding and harnessing the power of the human microbiome to address unmet medical needs. Seres's lead product candidate, SER-109, represents a significant advancement in the treatment of Clostridium difficile infection (CDI), a debilitating condition often resulting from antibiotic use. SER-109 has successfully completed Phase III clinical trials, demonstrating its potential to become a transformative therapy for CDI. Beyond SER-109, Seres is actively developing a pipeline of microbiome therapeutics, including SER-155, a cultivated bacteria microbiome drug currently in Phase Ib clinical trials, targeting the reduction of gastrointestinal infections, bloodstream infections, and graft versus host diseases in immunocompromised patients undergoing allogeneic hematopoietic stem cell transplantation and solid organ transplants. Additional programs include SER-287 and SER-301, both in Phase Ib trials for ulcerative colitis, SER-401 for metastatic melanoma, and SER-262 for Clostridioides difficile infection. Seres has also established strategic collaborations with Nestec Ltd. and Memorial Sloan Kettering Cancer Center to further expand its research and development efforts. Formerly known as Seres Health, Inc., the company rebranded as Seres Therapeutics, Inc. in May 2015, reflecting its focused commitment to microbiome-based therapies.

What They Do

  • Develop microbiome therapeutics using bacterial consortia.
  • Create therapies that interact with host cells and tissues to treat disease.
  • Focus on diseases like Clostridium difficile infection (CDI) and ulcerative colitis.
  • Advance SER-109, an oral microbiome therapeutic, through clinical trials.
  • Develop SER-155 to reduce infections in immunocompromised patients.
  • Research SER-287 and SER-301 for ulcerative colitis treatment.
  • Explore SER-401 for metastatic melanoma.
  • Investigate SER-262 to treat Clostridioides difficile infection.

Business Model

  • Develop and commercialize microbiome therapeutics.
  • Generate revenue through product sales upon regulatory approval.
  • Establish partnerships and collaborations for research and development funding.
  • License technologies and intellectual property to other companies.

Industry Context

Seres Therapeutics operates within the dynamic and rapidly evolving biotechnology industry, specifically focusing on microbiome therapeutics. This field is gaining increasing recognition for its potential to address a wide range of diseases by modulating the gut microbiome. The competitive landscape includes companies like ABOS (ArcBio Biosciences, Inc.), ACTU (Acutus Medical, Inc.), APLT (Applied Therapeutics, Inc.), CGTX (Cognition Therapeutics, Inc.), and HURA (Helius Medical Technologies, Inc.), each pursuing different approaches within the broader biotechnology sector. As the microbiome therapeutics market matures, Seres's advanced clinical programs and established platform position it favorably to capture a significant share of this growing market.

Key Customers

  • Patients suffering from Clostridium difficile infection (CDI).
  • Immunocompromised patients at risk of gastrointestinal and bloodstream infections.
  • Patients with ulcerative colitis.
  • Patients with metastatic melanoma.
AI Confidence: 73% Updated: Feb 9, 2026

Financials

Chart & Info

Seres Therapeutics, Inc. (MCRB) stock price: $9.33 (-0.24, -2.76%)

Latest News

Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations from Benzinga, Yahoo Finance, and Finnhub for MCRB.

Price Targets

Wall Street price target analysis for MCRB.

MoonshotScore

51/100

What does this score mean?

The MoonshotScore rates MCRB's growth potential on a scale of 0-100 across multiple factors including innovation, market disruption, financial health, and momentum.

Common Questions About MCRB (Healthcare)

What does Seres Therapeutics, Inc. do?

Seres Therapeutics, Inc. is a pioneering microbiome therapeutics platform company focused on developing novel treatments for various diseases by modulating the gut microbiome. Their lead product candidate, SER-109, is an oral microbiome therapeutic that has completed Phase III clinical trials for Clostridium difficile infection (CDI). The company is also developing a pipeline of other microbiome therapeutics, including SER-155, SER-287, SER-301, SER-401 and SER-262, targeting indications such as gastrointestinal infections, ulcerative colitis, and metastatic melanoma. Seres aims to transform the treatment of diseases by harnessing the power of the human microbiome.

Is MCRB stock worth researching?

MCRB stock presents a speculative investment opportunity with significant potential upside. The successful Phase III trial of SER-109 for CDI provides a strong foundation for potential FDA approval and commercialization. However, the company's high research and development costs and reliance on clinical trial outcomes pose risks. With a market capitalization of $0.13 billion and a profit margin of 1536.8%, Seres demonstrates potential for value creation, but investors should carefully consider the risks and potential rewards before investing. Upcoming milestones include potential FDA approval for SER-109 and continued progress in clinical trials for its other pipeline candidates.

What are the main risks for MCRB?

The main risks for Seres Therapeutics include the potential for clinical trial failures, regulatory delays or non-approval of its therapies, competition from other biotechnology companies, and the need for additional financing. Clinical trial failures could significantly impact the company's pipeline and future prospects. Regulatory hurdles and delays could delay the commercialization of SER-109 and other therapies. Competition from established pharmaceutical companies and other microbiome therapeutics developers could limit Seres's market share. The company's high cash burn rate and negative gross margin may require additional financing, which could dilute existing shareholders.

What are the key factors to evaluate for MCRB?

Seres Therapeutics, Inc. (MCRB) currently holds an AI score of 51/100, indicating moderate score. The stock trades at a P/E of 14.0x, below the S&P 500 average (~20-25x), potentially signaling value. Key strength: Pioneering microbiome therapeutics platform. Primary risk to monitor: Clinical trial failures for pipeline candidates. This is not financial advice.

How frequently does MCRB data refresh on this page?

MCRB prices update in real time during U.S. market hours (9:30 AM-4:00 PM ET, weekdays). Fundamentals refresh after quarterly or annual filings. Analyst ratings and AI insights update daily. News is aggregated continuously from financial sources.

What has driven MCRB's recent stock price performance?

Recent price movement in Seres Therapeutics, Inc. (MCRB) can be influenced by earnings results, analyst revisions, sector rotation, and broader market sentiment. Notable catalyst: Pioneering microbiome therapeutics platform. Check the News and Technical Analysis tabs for the latest drivers. Past performance does not predict future results.

Should investors consider MCRB overvalued or undervalued right now?

Determining whether Seres Therapeutics, Inc. (MCRB) is overvalued or undervalued requires examining multiple metrics. Its P/E ratio is 14.0. Compare valuation ratios (P/E, P/S, EV/EBITDA) against sector peers for a comprehensive view.

What research should beginners do before buying MCRB?

Before investing in Seres Therapeutics, Inc. (MCRB), research these four areas: (1) the company's revenue model and competitive position (see Company Overview), (2) financial health through revenue growth, margins, and cash flow (see MoonshotScore), (3) what Wall Street analysts recommend and their price targets (see Analyst tab), and (4) specific risk factors that could impact the stock (see Risk Factors section).

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Price as of Analysis updated AI Score refreshed daily
Data Sources & Methodology
Market data powered by Financial Modeling Prep & Yahoo Finance. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .

Data provided for informational purposes only.

Analysis Notes
  • Information is based on available data and may be subject to change.
  • Investment decisions should be based on individual risk tolerance and due diligence.
Data Sources

Popular Stocks