Fulcrum Therapeutics (FULC) Short Interest Ratio & Short Volume $7.68 +0.80 (+11.56%) Closing price 03:59 PM EasternExtended Trading$7.66 -0.01 (-0.20%) As of 04:16 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 Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Fulcrum Therapeutics Short Interest DataFulcrum Therapeutics (FULC) has a short interest of 5.82 million shares. This marks a 15.94% increase in short interest from the previous month. The short interest ratio (days to cover) is 8.7, indicating that it would take 8.7 days of the average trading volume of 572,500 shares to cover all short positions.Current Short Interest5,820,000 sharesPrevious Short Interest5,020,000 sharesChange Vs. Previous Month+15.94%Dollar Volume Sold Short$39.69 millionShort Interest Ratio8.7 Days to CoverLast Record DateAugust 15, 2025Outstanding Shares54,090,000 sharesPercentage of Shares Shorted10.76%Today's Trading Volume541,025 sharesAverage Trading Volume572,500 sharesToday's Volume Vs. Average95% Short Selling Fulcrum Therapeutics? Sign up to receive the latest short interest report for Fulcrum Therapeutics and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy 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. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartFULC Short Interest Over TimeFULC Days to Cover Over TimeFULC Percentage of Float Shorted Over Time Fulcrum Therapeutics Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/15/20255,820,000 shares $39.69 million +15.9%N/A8.7 $6.82 7/31/20255,020,000 shares $33.78 million +2.0%10.0%7.1 $6.73 7/15/20254,920,000 shares $38.57 million -12.8%N/A7.8 $7.84 6/30/20255,640,000 shares $38.80 million -3.1%11.2%9.2 $6.88 6/15/20255,820,000 shares $39.87 million +2.5%11.6%10.8 $6.85 5/31/20255,680,000 shares $38.96 million +15.2%11.0%10.2 $6.86 5/15/20254,930,000 shares $32.54 million +45.0%9.5%8.9 $6.60 4/30/20253,400,000 shares $13.09 million -4.5%N/A6.8 $3.85 4/15/20253,560,000 shares $10.82 million -4.6%6.9%8.9 $3.04 3/31/20253,730,000 shares $10.74 million -28.5%7.2%8.3 $2.88 Get the Latest News and Ratings for FULC and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Fulcrum Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 3/15/20255,220,000 shares $16.29 million +6.1%10.1%8.3 $3.12 2/28/20254,920,000 shares $17.66 million +10.8%9.5%7.2 $3.59 2/15/20254,440,000 shares $16.38 million +2.5%8.6%6.1 $3.69 1/31/20254,330,000 shares $17.15 million -7.3%N/A5.2 $3.96 1/15/20254,670,000 shares $19.15 million +10.4%N/A5.4 $4.10 12/31/20244,230,000 shares $19.88 million -0.7%N/A4.8 $4.70 12/15/20244,260,000 shares $16.87 million -7.0%N/A4.1 $3.96 11/30/20244,580,000 shares $17.63 million -2.1%N/A2.7 $3.85 11/15/20244,680,000 shares $14.06 million -5.8%N/A2.8 $3.01 10/31/20244,970,000 shares $15.71 million -10.0%N/A3.1 $3.16 10/15/20245,520,000 shares $20.20 million -6.4%N/A3.3 $3.66 9/30/20245,900,000 shares $21.06 million -48.3%N/A3.5 $3.57 9/15/202411,400,000 shares $36.25 million +41.4%N/A6.8 $3.18 8/31/20248,060,000 shares $68.91 million -1.1%N/A8.7 $8.55 8/15/20248,150,000 shares $78.97 million +6.1%N/A9 $9.69 7/31/20247,680,000 shares $71.27 million +5.8%N/A8.8 $9.28 7/15/20247,260,000 shares $61.35 million +37.2%N/A9.3 $8.45 6/30/20245,290,000 shares $32.80 million +36.3%N/A7.2 $6.20 6/15/20243,880,000 shares $28.91 million +8.1%N/A6.8 $7.45 5/31/20243,590,000 shares $28.18 million +16.2%N/A6.7 $7.85 5/15/20243,090,000 shares $25.49 million +3.0%N/A5 $8.25 4/30/20243,000,000 shares $21.39 million +18.6%N/A5 $7.13 4/15/20242,530,000 shares $18.62 million +12.0%N/A4 $7.36 3/31/20242,260,000 shares $21.33 million -5.4%N/A3.4 $9.44 3/15/20242,390,000 shares $27.15 million -25.3%N/A3.4 $11.36 2/29/20243,200,000 shares $32.67 million -0.6%N/A4.5 $10.21 2/15/20243,220,000 shares $30.27 million -4.7%N/A5.1 $9.40 1/31/20243,380,000 shares $24.40 million -16.3%N/A5.5 $7.22 1/15/20244,040,000 shares $28.68 million +10.1%N/A6.7 $7.10 12/31/20233,670,000 shares $24.77 million +10.2%N/A6.5 $6.75 12/15/20233,330,000 shares $17.95 million -18.0%N/A6.2 $5.39 11/30/20234,060,000 shares $19.49 million +9.7%N/A7.8 $4.80 11/15/20233,700,000 shares $15.47 million -6.3%N/A6.1 $4.18 10/31/20233,950,000 shares $14.38 million +1.0%N/A2 $3.64 10/15/20233,910,000 shares $15.21 million -2.7%N/A1.9 $3.89 9/30/20234,020,000 shares $17.85 million +7.5%N/A2 $4.44 9/15/20233,740,000 shares $16.79 million +5.1%N/A1.8 $4.49 8/31/20233,560,000 shares $19.69 million +30.4%N/A1.7 $5.53 8/15/20232,730,000 shares $11.55 million -22.2%N/A1.3 $4.23 7/31/20233,510,000 shares $13.41 million +0.3%N/A5 $3.82 7/15/20233,500,000 shares $12.88 million -4.1%N/A4.6 $3.68 6/30/20233,650,000 shares $12.05 million -19.3%N/A4.6 $3.30 6/15/20234,520,000 shares $13.74 million +9.4%N/A5.3 $3.04 5/31/20234,130,000 shares $11.23 million +4.8%N/A4.1 $2.72 5/15/20233,940,000 shares $14.34 million -17.6%N/A3.2 $3.64 4/30/20234,780,000 shares $11.95 million -6.6%N/A3.9 $2.50 4/15/20235,120,000 shares $12.34 million +3.6%N/A4.2 $2.41 3/31/20234,940,000 shares $14.08 million +25.1%N/A3.8 $2.85 3/15/20233,950,000 shares $15.01 million -2.5%N/A3.1 $3.80 2/28/20234,050,000 shares $24.46 million +7.7%N/A3.8 $6.04 2/15/20233,760,000 shares $48.69 million +6.2%N/A3.8 $12.95 1/31/20233,540,000 shares $44.64 million +6.6%N/A4.6 $12.61 1/15/20233,320,000 shares $45.48 million -7.3%N/A4.6 $13.70 12/30/20223,580,000 shares $26.06 million +21.0%N/A5.7 $7.28 12/15/20222,960,000 shares $16.22 million -9.2%N/A6.1 $5.48 11/30/20223,260,000 shares $22.33 million -4.4%N/A8.5 $6.85 11/15/20223,410,000 shares $24.48 million -2.0%N/A8.9 $7.18 10/31/20223,480,000 shares $19.35 million +0.6%N/A8 $5.56 10/15/20223,460,000 shares $25.95 million -3.9%N/A7.5 $7.50 9/30/20223,600,000 shares $29.12 million -7.2%N/A8.4 $8.09 9/15/20223,880,000 shares $35.31 million +13.8%N/A8.4 $9.10 8/31/20223,410,000 shares $25.23 million +5.3%N/A5.3 $7.40 8/15/20223,240,000 shares $25.34 million -8.2%N/A4.6 $7.82 7/31/20223,530,000 shares $20.76 million -6.1%12.0%4.8 $5.88 7/15/20223,760,000 shares $20.27 million +1.4%12.8%5.1 $5.39 6/30/20223,710,000 shares $18.18 million +6.6%12.6%4.3 $4.90 6/15/20223,480,000 shares $15.35 million -7.0%11.8%3.9 $4.41 5/31/20223,740,000 shares $26.63 million +9.4%12.7%5 $7.12 5/15/20223,420,000 shares $28.32 million -21.7%11.6%4.7 $8.28 4/30/20224,370,000 shares $42.04 million +63.1%15.1%6.4 $9.62 4/15/20222,680,000 shares $35.48 million -0.4%9.3%4.4 $13.24 3/31/20222,690,000 shares $63.62 million -5.0%9.3%5.4 $23.65 3/15/20222,830,000 shares $44.52 million +12.8%9.8%6.6 $15.73 2/28/20222,510,000 shares $27.61 million -4.9%8.4%6 $11.00 2/15/20222,640,000 shares $29.81 million +25.7%8.8%6.5 $11.29 1/31/20222,100,000 shares $25.54 million +17.3%7.2%4.7 $12.16 1/15/20221,790,000 shares $24.92 million -2.7%N/A0 $13.92 12/31/20211,840,000 shares $32.55 million +8.2%6.1%4.1 $17.69 12/15/20211,700,000 shares $28.56 million -18.7%5.6%3.4 $16.80 11/30/20212,090,000 shares $30.31 million -31.0%6.9%3.9 $14.50 11/15/20213,030,000 shares $54.12 million +47.1%10.0%5.5 $17.86 10/29/20212,060,000 shares $45.61 million -0.5%6.9%0.6 $22.14 10/15/20212,070,000 shares $53.82 million +0.5%6.8%0.6 $26.00 9/30/20212,060,000 shares $58.11 million +21.2%6.7%0.6 $28.21 9/15/20211,700,000 shares $45.85 million +4.9%5.9%0.5 $26.97 8/31/20211,620,000 shares $48.11 million -35.5%6.2%0.5 $29.70 8/13/20212,510,000 shares $57.55 million +261.2%13.1%0.8 $22.93 7/30/2021695,000 shares $5.08 million -7.4%4.4%0.4 $7.31 7/15/2021750,400 shares $7.02 million -12.2%4.7%4.9 $9.36 6/30/2021855,000 shares $8.96 million +29.1%5.4%6 $10.48 6/15/2021662,500 shares $5.59 million -2.4%4.2%5.9 $8.44 5/28/2021678,600 shares $6.06 million -5.4%4.3%7.7 $8.93 5/14/2021717,100 shares $7.09 million -3.6%4.5%8 $9.89 4/30/2021743,500 shares $8.35 million -3.6%4.8%7.4 $11.23 4/15/2021771,100 shares $9.23 million +0.5%3.6%6.4 $11.97 3/31/2021767,600 shares $8.77 million +8.9%3.6%5.4 $11.43 3/15/2021705,000 shares $8.62 million +2.0%3.3%4.6 $12.22 2/26/2021691,000 shares $8.82 million -4.6%3.2%4.6 $12.77 2/12/2021724,100 shares $9.70 million +2.4%3.5%4.5 $13.40 1/29/2021707,500 shares $7.96 million -21.8%4.1%4.3 $11.25 1/15/2021904,800 shares $10.27 million -9.5%5.3%5.3 $11.35 12/31/20201,000,000 shares $12.69 million +13.2%6.8%6 $12.69 12/15/2020883,700 shares $11.80 million -5.1%6.0%4.7 $13.35 11/30/2020931,000 shares $10.74 million -9.6%6.3%4.6 $11.54 11/15/20201,030,000 shares $13.03 million -22.0%7.0%5.1 $12.65 10/30/20201,320,000 shares $13.11 million +9.1%9.7%5.5 $9.93 10/15/20201,210,000 shares $13.64 million +5.2%8.9%5 $11.27 9/30/20201,150,000 shares $9.12 million +34.6%8.5%5.4 $7.93 9/15/2020854,200 shares $6.65 million +14.7%6.3%4.3 $7.78 FULC Short Interest - Frequently Asked Questions What is Fulcrum Therapeutics' current short interest? Short interest is the volume of Fulcrum Therapeutics shares that have been sold short but have not yet been covered or closed out. As of August 15th, investors have sold 5,820,000 shares of FULC short. Learn More on Fulcrum Therapeutics' current short interest. What is a good short interest ratio for Fulcrum Therapeutics? The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. FULC shares currently have a short interest ratio of 9.0. Learn More on Fulcrum Therapeutics's short interest ratio. Which institutional investors are shorting Fulcrum Therapeutics? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Fulcrum Therapeutics: Group One Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is Fulcrum Therapeutics' short interest increasing or decreasing? Fulcrum Therapeutics saw a increase in short interest during the month of August. As of August 15th, there was short interest totaling 5,820,000 shares, an increase of 15.9% from the previous total of 5,020,000 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment. How does Fulcrum Therapeutics' short interest compare to its competitors? Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Fulcrum Therapeutics: Vera Therapeutics, Inc. (16.01%), Cogent Biosciences, Inc. (11.43%), Janux Therapeutics, Inc. (14.97%), Precigen, Inc. (20.94%), 89BIO (10.53%), Xeris Biopharma Holdings, Inc. (8.27%), AbCellera Biologics Inc. (18.53%), Evotec AG (0.20%), Collegium Pharmaceutical, Inc. (14.47%), Intellia Therapeutics, Inc. (25.83%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Lucid Group, Inc. ($8.00 billion), Spotify Technology ($5.48 billion), AppLovin Corporation ($5.11 billion), Reddit Inc. ($5.02 billion), Coinbase Global, Inc. ($3.99 billion), Charter Communications, Inc. ($3.89 billion), Live Nation Entertainment, Inc. ($3.18 billion), Seagate Technology Holdings PLC ($2.59 billion), ResMed Inc. ($2.55 billion), and Rocket Lab Corporation ($2.52 billion). View all of the most shorted stocks. What does it mean to sell short Fulcrum Therapeutics stock? Short selling FULC is an investing strategy that aims to generate trading profit from Fulcrum Therapeutics as its price is falling. FULC shares are trading up $0.86 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit. How does a short squeeze work against Fulcrum Therapeutics? A short squeeze for Fulcrum Therapeutics occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of FULC, which in turn drives the price of the stock up even further. How often is Fulcrum Therapeutics' short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including FULC, twice per month. The most recent reporting period available is August, 15 2025. More Short Interest Resources from MarketBeat Related Companies Vera Therapeutics Short Interest Data Cogent Biosciences Short Interest Data Janux Therapeutics Short Interest Data Precigen Short Interest Data 89BIO Short Interest Data Xeris Biopharma Short Interest Data AbCellera Biologics Short Interest Data Evotec Short Interest Data Collegium Pharmaceutical Short Interest Data Intellia Therapeutics Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:FULC) was last updated on 9/5/2025 by MarketBeat.com Staff From Our PartnersWhy Trump’s “Smart Dollar” could rewrite the rulesMUST SEE: Donald Trump's Radical Overhaul of the U.S. Dollar Congress just approved President Trump's lates...Stansberry Research | Sponsored“Sell Nvidia before earnings”Eric Fry just went live with one of his most controversial calls yet: “Sell Nvidia.” While Wall Street has bee...InvestorPlace | SponsoredHow “Trump’s New Dollar” Could Impact Your WealthPresident Trump just signed a game-changing law… That could soon upgrade the U.S. dollar in your checking a...Brownstone Research | SponsoredForget Tesla — This Tiny AI Stock Is Musk’s Real PlayWhile Wall Street focused on Tesla’s earnings, Elon Musk was quietly building a supercomputer so powerful it c...Behind the Markets | SponsoredRetire Comfortably with These New Monthly Income ETFs?Too many retirees lie awake at night, worried their savings won’t last. 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