NASDAQ:MCRB Seres Therapeutics (MCRB) Stock Price, News & Analysis $4.56 0.00 (0.00%) As of 08/21/2026 04:00 PM Eastern 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$4.50▼$4.6450-Day Range$4.34▼$8.1452-Week Range$4.32▼$29.98Volume45,314 shsAverage Volume64,740 shsMarket Capitalization$45.83 millionP/E RatioN/ADividend YieldN/APrice Target$17.00Consensus 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™ Stocks55th Percentile Overall ScoreMCRB MarketRank™: Seres Therapeutics scored higher than 55% of companies evaluated by MarketBeat, and ranked 534th out of 915 stocks in the healthcare sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.7 / 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 272.8% upside from its current price of $4.56.Amount of Analyst CoverageSeres Therapeutics has only been the subject of 3 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 ($4.36) to ($2.06) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of Seres Therapeutics is -1.88, 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 -1.88, 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 0.93. 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 Shorted3.34% 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 5.92.Change versus previous monthShort interest in Seres Therapeutics has recently increased by 3.67%, 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 Media1.4 / 5News Sentiment-0.80 News SentimentSeres Therapeutics has a news sentiment score of -0.80. 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 lower news sentiment than the 0.65 average news sentiment score of Healthcare companies.News Coverage This WeekMarketBeat has tracked 5 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. This is an increase of 100% compared to the previous 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. 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 HeadlinesCanaccord Genuity Reaffirms Their Buy Rating on Seres Therapeutics (MCRB)August 20, 2026 | theglobeandmail.comSeres Therapeutics: Q2 Earnings SnapshotAugust 5, 2026 | finance.yahoo.comBuy THIS potential Musk supplier before WednesdayA little-known company trading under $1 could become Elon Musk's next supplier, with a possible announcement expected by Wednesday, August 26. Tech investing veteran Jeff Brown notes that the last time Musk struck a deal with a small company in this sector, the stock soared nearly five times in a single session. He has reopened his strategy session with full details on this potential opportunity. | Brownstone Research (Ad)Seres Therapeutics Reports Second Quarter 2026 Financial Results and Provides Business Updates, Including Further Action to Reduce Ongoing Facilities CostsAugust 5, 2026 | finance.yahoo.comSeres Therapeutics Streamlines Cambridge Operations with Lease ChangesAugust 4, 2026 | tipranks.comSeres Therapeutics' SER-155 posts 80% response in cancer immunotherapy GI toxicity studyJuly 11, 2026 | msn.comSeres Therapeutics Shareholders Approve Directors and Executive PayJuly 8, 2026 | tipranks.comSeres Therapeutics, Inc. (MCRB) Discusses Promising SER-155 Clinical Trial Results for Immune Checkpoint Inhibitor Related Andropilatis TranscriptJuly 8, 2026 | seekingalpha.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 2026. Since then, MCRB stock has decreased by 69.4% and is now trading at $4.56. How were Seres Therapeutics' earnings last quarter? Seres Therapeutics, Inc. (NASDAQ:MCRB) announced 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 earned $0.74 million during the quarter, compared to analysts' expectations of $0.18 million. Seres Therapeutics had a negative net margin of 1,192.94% and a negative trailing twelve-month return on equity of 114.82%. When did Seres Therapeutics' stock split? Seres Therapeutics's stock reverse split before market open 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 closing bell 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 acted 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 Earnings8/05/2026Today8/23/2026Next 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 (2m+) 1-Year History Aug 25 Nov 25 Feb 26 May 26 Aug 26 MCRB's financial health is in the Red zone, according to TradeSmith. MCRB has been in this zone for over 2 months. Industry, Sector and Symbol Stock ExchangeNASDAQ SectorHealthcare Industry Biotechnology Sub-IndustryBiotechnology Current SymbolNASDAQ:MCRB CIK1609809 Webwww.serestherapeutics.com Phone(617) 945-9626FaxN/AEmployees330Year 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+272.8%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 / Sales58.01 Cash Flow$1.09 per share Price / Cash Flow4.20 Book Value$4.89 per share Price / Book0.93Miscellaneous Outstanding Shares10,050,000Free Float9,523,000Market Cap$45.83 million OptionableOptionable Beta0.20 Social Links 7 Stocks That Will Be Magnificent in 2026Discover the next wave of investment opportunities with our report, 7 Stocks That Will Be Magnificent in 2026. 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