NASDAQ:MCRB Seres Therapeutics (MCRB) Stock Price, News & Analysis $2.71 +0.08 (+3.04%) Closing price 10/9/2026 04:00 PM EasternExtended Trading$2.76 +0.04 (+1.66%) As of 10/9/2026 07:30 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 EventsFinancialsInsider TradesNews and TrendsOptions ChainOwnershipSEC Filings 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$2.58▼$2.7550-Day Range$2.63▼$5.7252-Week Range$2.42▼$29.98Volume79,407 shsAverage Volume78,814 shsMarket Capitalization$27.24 millionP/E RatioN/ADividend YieldN/APrice Target$17.00Consensus RatingHold Company Overview Seres Therapeutics, Inc. is a biotechnology company focused on developing live biotherapeutics designed to restore and maintain the function of the human microbiome. Its research has centered on therapeutic products made from defined mixtures of microorganisms, rather than conventional broad-spectrum antibiotics or nonselective fecal material. The company’s leading product is VOWST, an orally administered microbiota-based therapy approved by the U.S. Food and Drug Administration for preventing the recurrence of Clostridioides difficile infection in adults following antibacterial treatment for recurrent infection. VOWST was developed to help reestablish a healthy intestinal microbiome and represented one of the first microbiome-based prescription products to receive FDA approval. Seres was founded in 2010 and is headquartered in Cambridge, Massachusetts. The company developed its products primarily for the U.S. market and worked with Nestlé Health Science on the commercialization of VOWST. Seres was led for much of its operating history by Eric Shaff, who served as president and chief executive officer. The company subsequently transferred its VOWST-related business to Nestlé Health Science and reduced its operations, reflecting a shift away from commercial activities toward a more limited corporate structure.AI Generated. May Contain Errors. Read More Seres Therapeutics Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks51st Percentile Overall ScoreMCRB MarketRank™: Seres Therapeutics scored higher than 51% of companies evaluated by MarketBeat, and ranked 611th out of 883 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.3 / 5Analyst RatingHold Consensus RatingSeres Therapeutics has received a consensus rating of Hold. The company's average rating score is 2.25, and is based on no strong buy ratings, 2 buy ratings, 1 hold rating, and 1 sell rating.Upside PotentialSeres Therapeutics has a consensus price target of $17.00, representing about 527.3% upside from its current price of $2.71.Amount of Analyst CoverageSeres Therapeutics has only been the subject of 1 research reports in the past 90 days.Read more about Seres Therapeutics' stock forecast and price target. Earnings and Valuation1.3 / 5Proj. Earnings GrowthGrowing Earnings GrowthEarnings for Seres Therapeutics are expected to grow in the coming year, from ($6.33) to ($2.06) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Seres Therapeutics is -1.12, 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 -1.12, 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 0.55. P/B Ratios below 1 indicate that a company could be undervalued with respect to its assets and liabilities.Read more about Seres Therapeutics' valuation and earnings. Short Interest2.0 / 5Short Interest LevelBearish Percentage of Shares Shorted3.30% 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 5.15.Change versus previous monthShort interest in Seres Therapeutics has recently increased by 4.29%, indicating that investor sentiment is decreasing. 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 Media2.2 / 5News Sentiment0.60 News SentimentSeres Therapeutics has a news sentiment score of 0.60. 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 news sentiment score is similar to the average news sentiment of Healthcare companies.News Coverage This WeekMarketBeat has tracked 2 news articles for Seres Therapeutics this week, compared to 2 articles on an average week.Search Interest2 people have searched for MCRB on MarketBeat in the last 30 days. Company Ownership1.6 / 5Insider TradingSelling Shares Insider Buying vs. Insider SellingIn the past three months, Seres Therapeutics insiders have sold more of their company's stock than they have bought. Specifically, they have bought $0.00 in company stock and sold $2,230.00 in 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. 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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) Stock Price Crosses Below Fifty Day Moving Average - Here's WhyOctober 8 at 4:01 AM | americanbankingnews.comSeres Therapeutics (NASDAQ:MCRB) Share Price Crosses Below Fifty Day Moving Average - Time to Sell?September 30, 2026 | americanbankingnews.comLouis Navellier: My #1 AI stock for 2026 (name & ticker inside)Louis Navellier's Stock Grader system helped him flag Nvidia before its 82,000% run and has identified the top S&P 500 stock for 12 years running—and today, he's giving away his #1 AI stock pick for 2026, free. This company's sales are up 28% year over year, it holds over 30,000 patents in wireless and video technology, and it just earned an A-rating in his proprietary Stock Grader system that has cost him $9 million to build and maintain.October 11 at 1:00 AM | InvestorPlace (Ad)Seres Therapeutics, Inc.(NasdaqGS:MCRB) dropped from S&P Global BMI IndexSeptember 20, 2026 | marketscreener.comMSeres Therapeutics Reports Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)September 8, 2026 | globenewswire.comSeres Therapeutics to Participate in H.C. Wainwright 28th Annual Global Investment ConferenceSeptember 1, 2026 | globenewswire.comCanaccord Genuity Reaffirms Their Buy Rating on Seres Therapeutics (MCRB)August 20, 2026 | theglobeandmail.comSeres Therapeutics: Q2 Earnings SnapshotAugust 5, 2026 | finance.yahoo.comSee More Headlines MCRB Stock Analysis - Frequently Asked Questions How have MCRB shares performed this year? Seres Therapeutics' stock was trading at $14.88 at the beginning of the year. Since then, MCRB shares have decreased by 81.8% and is now trading at $2.71. How were Seres Therapeutics' earnings last quarter? Seres Therapeutics, Inc. (NASDAQ:MCRB) posted its earnings results on Wednesday, August, 5th. The biotechnology company reported $0.47 earnings per share (EPS) for the quarter, topping analysts' consensus estimates of ($2.18) by $2.65. The biotechnology company had revenue of $0.74 million for the quarter, compared to the consensus estimate of $0.18 million. Seres Therapeutics had a negative trailing twelve-month return on equity of 114.82% and a negative net margin of 1,192.94%. When did Seres Therapeutics' stock split? Shares of Seres Therapeutics reverse split on the morning of 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 initial public offering on Friday, June 26th 2015. The company issued 7,430,555 shares at $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 Earnings8/05/2026Today10/11/2026Next Earnings (Estimated)11/04/2026Fiscal 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. Red Zone (4m+) 1-Year History Oct 25 Jan 26 Apr 26 Jul 26 Oct 26 MCRB's financial health is in the Red zone, according to TradeSmith. MCRB has been in this zone for over 4 months. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorHealthcare Industry Biotechnology Sub-IndustryBiotechnology Current SymbolNASDAQ:MCRB CIK1609809 Webwww.serestherapeutics.com Phone(617) 945-9626FaxN/AEmployees66Year Founded2010Price Target and Rating Average Price Target for Seres Therapeutics$17.00 High Price Target$22.00 Low Price Target$12.00 Potential Upside/Downside+527.3%Consensus RatingHold Rating Score (0-4)2.25 Research Coverage4 Analysts Profitability EPS (Trailing Twelve Months)($2.43) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income$5.70 million Net Margins-1,192.94% Pretax Margin-1,192.94% Return on Equity-114.82% Return on Assets-34.15% Debt Debt-to-Equity RatioN/A Current Ratio2.11 Quick Ratio2.11 Sales & Book Value Annual Sales$790 thousand Price / Sales34.48 Cash Flow$1.09 per share Price / Cash Flow2.49 Book Value$4.89 per share Price / Book0.55Miscellaneous Outstanding Shares10,050,000Free Float9,523,000Market Cap$27.24 million OptionableOptionable Beta0.31 Social Links 7 Stocks to Buy Before the Robotics RevolutionRobotics and automation are rapidly becoming essential infrastructure across healthcare, manufacturing, logistics, and many other industries. "Physical AI" is coming. Learn which seven companies are most positioned to benefit as intelligent robots enter the workforce.Get This Free Report This page (NASDAQ:MCRB) was last updated on 10/11/2026 by MarketBeat.com Staff. From Our PartnersALERT: Drop these 5 stocks before the market opens tomorrow!The Wall Street Journal is already raising the alarm about a potential market crash, and Weiss Ratings researc...Weiss Ratings | SponsoredTrump's New DollarPorter Stansberry says President Trump has signed an executive order initiating what he calls a full U.S. doll...Porter & Company | SponsoredSmall Colorado Company (Backed by Sam Altman) Could Save U.S. Power GridA small Colorado company has secured rights to technology that could prevent the U.S. public power grid from c...Altimetry | SponsoredReady to give options a try? 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