NASDAQ:MCRB Seres Therapeutics (MCRB) Stock Price, News & Analysis $6.28 -0.35 (-5.28%) Closing price 06/8/2026 04:00 PM EasternExtended Trading$6.19 -0.09 (-1.48%) As of 06/8/2026 07:32 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock About Seres Therapeutics Stock (NASDAQ:MCRB) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get Seres Therapeutics alerts:Sign Up Key Stats Today's Range$6.01▼$6.9950-Day Range$6.28▼$9.2752-Week Range$6.01▼$29.98Volume88,892 shsAverage Volume48,497 shsMarket Capitalization$60.79 millionP/E RatioN/ADividend YieldN/APrice Target$22.00Consensus RatingHold Company Overview Seres Therapeutics is a clinical‐stage microbiome therapeutics company focused on harnessing the power of the human microbiome to treat serious diseases. Headquartered in Cambridge, Massachusetts, Seres applies proprietary microbiome science and manufacturing capabilities to develop a pipeline of living microbial therapies designed to restore healthy gut function. The company’s approach leverages understanding of microbial ecology and human biology to address conditions where the native microbiome is disrupted. Among its lead candidates is SER-109, an investigational oral microbiome therapeutic for reducing recurrence of Clostridioides difficile infection. Seres is also advancing SER-287 in ulcerative colitis, SER-401 in combination with immunotherapy for certain cancers, and other preclinical programs targeting metabolic and inflammatory diseases. The company collaborates with strategic partners, including Nestlé Health Science, to support development, manufacturing scale-up and global research efforts. Founded in 2010, Seres went public in 2015 to further accelerate its clinical pipeline. The management team comprises experienced biotech executives, clinicians and scientists with expertise in microbiome research and product development. Seres continues to conduct multi‐center clinical trials across North America and Europe, seeking to bring first‐in‐class microbiome therapies to patients with limited treatment options.AI Generated. May Contain Errors. Read More Seres Therapeutics Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks42nd Percentile Overall ScoreMCRB MarketRank™: Seres Therapeutics scored higher than 42% of companies evaluated by MarketBeat, and ranked 619th out of 865 stocks in the medical sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.4 / 5Analyst RatingHold Consensus RatingSeres Therapeutics has received a consensus rating of Hold. The company's average rating score is 2.00, and is based on no strong buy ratings, 1 buy rating, no hold ratings, and 1 sell rating.Upside PotentialSeres Therapeutics has a consensus price target of $22.00, representing about 250.3% upside from its current price of $6.28.Amount of Analyst CoverageSeres Therapeutics has only been the subject of 2 research reports in the past 90 days.Read more about Seres Therapeutics' stock forecast and price target. Earnings and Valuation0.0 / 5Proj. Earnings GrowthN/A Price to Earnings Ratio vs. the MarketThe P/E ratio of Seres Therapeutics is -1.21, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of Seres Therapeutics is -1.21, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioSeres Therapeutics has a P/B Ratio of 1.28. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities.Read more about Seres Therapeutics' valuation and earnings. Short Interest2.0 / 5Short Interest LevelBearish Percentage of Shares Shorted5.56% of the float of Seres Therapeutics has been sold short.Short Interest Ratio / Days to CoverSeres Therapeutics has a short interest ratio ("days to cover") of 11.08, which indicates bearish sentiment.Change versus previous monthShort interest in Seres Therapeutics has recently decreased by 5.17%, indicating that investor sentiment is improving significantly. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldSeres Therapeutics does not currently pay a dividend.Dividend GrowthSeres Therapeutics does not have a long track record of dividend growth. News and Social Media3.0 / 5News Sentiment0.81 News SentimentSeres Therapeutics has a news sentiment score of 0.81. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a higher news sentiment than the 0.50 average news sentiment score of Medical companies.News Coverage This WeekMarketBeat has tracked 4 news articles for Seres Therapeutics this week, compared to 1 article on an average week.Search InterestOnly 1 people have searched for MCRB on MarketBeat in the last 30 days. This is a decrease of -80% compared to the previous 30 days. Company Ownership0.9 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, Seres Therapeutics insiders have not sold or bought any company stock.Percentage Held by Insiders5.20% of the stock of Seres Therapeutics is held by insiders.Percentage Held by Institutions59.34% of the stock of Seres Therapeutics is held by institutions. High institutional ownership can be a signal of strong market trust in this company.Read more about Seres Therapeutics' insider trading history. Receive MCRB Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Seres Therapeutics and its competitors with MarketBeat's FREE daily newsletter. Submit View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. MCRB Stock News HeadlinesSeres Therapeutics (NASDAQ:MCRB) Upgraded at Wall Street ZenJune 6 at 1:43 AM | americanbankingnews.comSeres Therapeutics Announces Two Transactions to Strengthen Balance Sheet, Reduce On-Going Lease Costs and Extend Projected Operating Cash Runway Well Into the First Quarter of ...June 5, 2026 | finance.yahoo.comYour book is insideThe "Sucker's Bet" Most New Options Traders Fall For Most people who try options lose money the same way. They don't know the rules. They don't know what to avoid. And they hand their account to Wall Street on a silver platter. Normally $29.97. Free today. | Profits Run (Ad)Seres Therapeutics Secures $25 Million from Nestlé Health Science and Reduces Facility Costs to Enhance Financial PositionJune 5, 2026 | quiverquant.comQSeres Therapeutics Announces Two Transactions to Strengthen Balance Sheet, Reduce On-Going Lease Costs and Extend Projected Operating Cash Runway Well Into the First Quarter of 2027June 5, 2026 | globenewswire.comSeres Therapeutics Announces Executive Leadership Changes and PromotionsMay 30, 2026 | theglobeandmail.comSeres Therapeutics (MCRB) Gets a Buy from Canaccord GenuityMay 21, 2026 | theglobeandmail.comSeres Therapeutics to Participate in H.C. Wainwright 4th Annual BioConnect Investor ConferenceMay 12, 2026 | globenewswire.comSee More Headlines MCRB Stock Analysis - Frequently Asked Questions How have MCRB shares performed this year? Seres Therapeutics' stock was trading at $14.88 on January 1st, 2026. Since then, MCRB shares have decreased by 57.8% and is now trading at $6.28. How were Seres Therapeutics' earnings last quarter? Seres Therapeutics, Inc. (NASDAQ:MCRB) announced its quarterly earnings data on Tuesday, May, 5th. The biotechnology company reported ($2.08) earnings per share for the quarter, missing analysts' consensus estimates of ($1.88) by $0.20. The biotechnology company had revenue of $0.36 million for the quarter, compared to analysts' expectations of $0.36 million. When did Seres Therapeutics' stock split? Shares of Seres Therapeutics reverse split on Tuesday, April 22nd 2025.The 1-20 reverse split was announced on Thursday, April 10th 2025. The number of shares owned by shareholders was adjusted after the market closes on Monday, April 21st 2025. An investor that had 100 shares of stock prior to the reverse split would have 5 shares after the split. When did Seres Therapeutics IPO? Seres Therapeutics (MCRB) raised $119 million in an IPO on Friday, June 26th 2015. The company issued 7,430,555 shares at a price of $15.00-$17.00 per share. Goldman Sachs and BofA Merrill Lynch served as the underwriters for the IPO and Leerink Partners and Canaccord Genuity were co-managers. How do I buy shares of Seres Therapeutics? Shares of MCRB stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Seres Therapeutics own? Based on aggregate information from My MarketBeat watchlists, some other companies that Seres Therapeutics investors own include PayPal (PYPL), NVIDIA (NVDA), Meta Platforms (META), Tesla (TSLA), Micron Technology (MU), Qualcomm (QCOM) and NIO (NIO). Company Calendar Last Earnings5/05/2026Today6/08/2026AGM 20266/09/2026Next Earnings (Estimated)8/05/2026Fiscal Year End12/31/2026Get Stock Alerts Health Indicator TradeSmith's Health IndicatorA long-term volatility-based measure designed for securities held 12 months or longer.Green: Strong and healthy uptrend with normal pullbacks.Yellow: Significant pullback but still within expected volatility.Red: Dropped beyond expected volatility; considered unhealthy. Yellow Zone (4m+) 1-Year History Jun 25 Sep 25 Dec 25 Mar 26 Jun 26 MCRB's financial health is in the Yellow zone, according to TradeSmith. MCRB has been in this zone for over 4 months. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorMedical Industry MED - BIOMED/GENE Sub-IndustryPharmaceutical Products Current SymbolNASDAQ:MCRB CIK1609809 Webwww.serestherapeutics.com Phone(617) 945-9626FaxN/AEmployees330Year Founded2010Price Target and Rating Average Price Target for Seres Therapeutics$22.00 High Price Target$22.00 Low Price Target$22.00 Potential Upside/Downside+250.3%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage2 Analysts Profitability EPS (Trailing Twelve Months)($5.17) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income$5.70 million Net MarginsN/A Pretax Margin-4,088.84% Return on Equity-130.29% Return on Assets-35.35% Debt Debt-to-Equity RatioN/A Current Ratio1.65 Quick Ratio1.65 Sales & Book Value Annual Sales$790 thousand Price / Sales76.95 Cash Flow$1.03 per share Price / Cash Flow6.10 Book Value$4.89 per share Price / Book1.28Miscellaneous Outstanding Shares9,680,000Free Float9,180,000Market Cap$60.79 million OptionableOptionable Beta0.12 Social Links The Best Nuclear Energy Stocks to BuyNuclear energy is entering a new growth cycle as rising power demand, expanding data centers, and renewed policy support bring the sector back into focus. 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