This company has been marked as potentially delisted and may not be actively trading. ImmunoGen (IMGN) Short Interest Ratio & Short Volume Add Compare Share Share Short Interest Stock AnalysisBuy This Stock ImmunoGen Short Interest DataImmunoGen (IMGN) has a short interest of 20.61 million shares. This marks a 9.28% increase in short interest from the previous month. The short interest ratio (days to cover) is 2.5, indicating that it would take 2.5 days of the average trading volume of 8.78 million shares to cover all short positions.Current Short Interest20,610,000 sharesPrevious Short Interest18,860,000 sharesChange Vs. Previous Month+9.28%Dollar Volume Sold Short$604.29 millionShort Interest Ratio2.5 Days to CoverLast Record DateJanuary 31, 2024Outstanding Shares266,264,000 sharesPercentage of Shares Shorted7.74%Today's Trading Volume40 sharesAverage Trading Volume8,778,325 sharesToday's Volume Vs. Average0% Short Selling ImmunoGen? 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Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartIMGN Short Interest Over TimeIMGN Days to Cover Over TimeIMGN Percentage of Float Shorted Over Time ImmunoGen Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 1/31/202420,610,000 shares $604.29 million +9.3%N/A2.5 $29.32 1/15/202418,860,000 shares $561.27 million -8.6%N/A2.3 $29.76 12/31/202320,640,000 shares $611.98 million +5.6%N/A2.6 $29.65 12/15/202319,550,000 shares $575.75 million -48.7%N/A2.6 $29.45 11/30/202338,120,000 shares $1.12 billion +16.7%N/A5.4 $29.35 11/15/202332,660,000 shares $510.80 million +30.5%N/A6.8 $15.64 10/31/202325,030,000 shares $371.95 million +0.7%N/A5.4 $14.86 10/15/202324,860,000 shares $358.73 million +15.0%N/A5.4 $14.43 9/30/202321,620,000 shares $343.11 million +15.1%N/A5.2 $15.87 9/15/202318,780,000 shares $295.22 million -1.7%N/A4.5 $15.72 Get the Latest News and Ratings for IMGN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for ImmunoGen and its competitors with MarketBeat's FREE daily newsletter. 8/31/202319,100,000 shares $302.54 million +2.6%N/A3.8 $15.84 8/15/202318,620,000 shares $289.73 million +7.9%N/A3.4 $15.56 7/31/202317,250,000 shares $307.40 million +6.9%N/A2.9 $17.82 7/15/202316,130,000 shares $314.54 million -3.6%N/A2 $19.50 6/30/202316,730,000 shares $315.70 million -19.6%N/A2.1 $18.87 6/15/202320,820,000 shares $389.33 million +17.0%N/A2.7 $18.70 5/31/202317,800,000 shares $242.79 million +14.3%N/A2.6 $13.64 5/15/202315,580,000 shares $210.02 million -32.6%N/A2.4 $13.48 4/30/202323,100,000 shares $124.51 million -5.8%N/A3.7 $5.39 4/15/202324,520,000 shares $99.06 million -6.7%N/A7.7 $4.04 3/31/202326,270,000 shares $100.88 million +5.1%N/A8.2 $3.84 3/15/202325,000,000 shares $102.50 million +9.7%N/A7.2 $4.10 2/28/202322,800,000 shares $88.46 million +21.2%N/A6.6 $3.88 2/15/202318,810,000 shares $79.00 million +5.8%N/A5.7 $4.20 1/31/202317,780,000 shares $81.79 million -0.9%N/A5.1 $4.60 1/15/202317,940,000 shares $81.27 million -0.5%N/A4.9 $4.53 12/30/202218,030,000 shares $89.43 million +18.9%N/A4.8 $4.96 12/15/202215,170,000 shares $75.39 million -7.1%N/A4.2 $4.97 11/30/202216,330,000 shares $84.75 million -1.5%N/A4.6 $5.19 11/15/202216,570,000 shares $83.02 million -6.5%N/A4.6 $5.01 10/31/202217,720,000 shares $105.26 million +20.9%N/A5.4 $5.94 10/15/202214,660,000 shares $88.69 million +6.7%N/A4.7 $6.05 9/30/202213,740,000 shares $65.68 million +13.2%N/A4.6 $4.78 9/15/202212,140,000 shares $65.31 million -1.4%N/A4 $5.38 8/31/202212,310,000 shares $71.52 million -13.9%N/A3.9 $5.81 8/15/202214,300,000 shares $83.37 million -11.4%N/A4.3 $5.83 7/31/202216,140,000 shares $76.50 million +8.6%N/A4.3 $4.74 7/15/202214,860,000 shares $79.95 million -5.5%N/A4 $5.38 6/30/202215,730,000 shares $70.79 million -1.8%N/A4.3 $4.50 6/15/202216,020,000 shares $53.99 million +0.7%10.9%4.2 $3.37The Recession Already Started, Are You Prepared? 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If you’re concerned about inflation, rising debt, or a falling dollar, this free Wealth Protection Kit includes three timely reports to help you prepare for what’s coming next.Get your free 2025 Wealth Protection Kit today 5/31/202215,910,000 shares $58.23 million -16.5%N/A3.8 $3.66 5/15/202219,060,000 shares $73.00 million +12.5%N/A4.7 $3.83 4/30/202216,940,000 shares $81.82 million +15.2%N/A4.7 $4.83 4/15/202214,700,000 shares $78.65 million -10.0%N/A4.2 $5.35 3/31/202216,340,000 shares $77.78 million +1.7%N/A4.6 $4.76 3/15/202216,060,000 shares $79.66 million +6.6%N/A4.9 $4.96 2/28/202215,060,000 shares $84.94 million +16.2%N/A5.6 $5.64 2/15/202212,960,000 shares $75.17 million +1.3%N/A2.9 $5.80 1/31/202212,800,000 shares $72.32 million -2.4%N/A3 $5.65 1/15/202213,110,000 shares $85.08 million +0.7%N/A0 $6.49 12/31/202113,020,000 shares $96.61 million +25.7%N/A3.4 $7.42 12/15/202110,360,000 shares $68.79 million +22.0%N/A2.7 $6.64 11/30/20218,490,000 shares $52.38 million -18.6%4.3%2.4 $6.17 11/15/202110,430,000 shares $59.24 million -35.6%5.6%6.7 $5.68 10/29/202116,200,000 shares $97.69 million -7.0%8.6%11.5 $6.03 10/15/202117,420,000 shares $100.86 million -9.6%9.2%13.4 $5.79 9/30/202119,260,000 shares $109.20 million -8.9%10.2%14.6 $5.67 9/15/202121,130,000 shares $118.96 million -1.2%11.2%15.5 $5.63 8/31/202121,380,000 shares $129.35 million +5.2%11.4%15.5 $6.05 8/13/202120,330,000 shares $109.38 million -2.1%10.6%11.2 $5.38 7/30/202120,760,000 shares $116.46 million +2.4%10.9%11.3 $5.61 7/15/202120,270,000 shares $117.97 million -8.3%10.2%10.8 $5.82 6/30/202122,110,000 shares $145.70 million -4.2%11.1%11.5 $6.59 6/15/202123,070,000 shares $151.11 million +11.2%11.6%11.8 $6.55 5/28/202120,740,000 shares $128.17 million -0.5%10.4%10.4 $6.18 5/14/202120,850,000 shares $133.44 million -0.2%N/A11.8 $6.40 4/30/202120,900,000 shares $167.62 million +0.3%N/A9.2 $8.02 4/15/202120,840,000 shares $158.80 million -6.8%N/A9.1 $7.62 3/31/202122,350,000 shares $179.69 million +0.2%N/A9 $8.04 3/15/202122,310,000 shares $196.77 million -2.5%N/A8.4 $8.82 2/26/202122,890,000 shares $200.97 million -14.0%N/A8.2 $8.78 2/12/202126,630,000 shares $215.17 million -1.3%N/A9.6 $8.08 1/29/202126,970,000 shares $194.72 million +3.2%N/A11.4 $7.22 1/15/202126,130,000 shares $198.07 million -4.1%N/A10.8 $7.58 12/31/202027,240,000 shares $182.24 million +19.5%N/A9.8 $6.69 12/15/202022,790,000 shares $165.46 million +10.7%N/A7.8 $7.26 11/30/202020,590,000 shares $113.66 million -3.0%N/A7.5 $5.52 11/15/202021,230,000 shares $124.62 million +13.4%N/A7.7 $5.87 10/30/202018,720,000 shares $105.96 million +16.7%N/A6.9 $5.66 10/15/202016,040,000 shares $85.81 million -7.5%N/A6 $5.35 9/30/202017,340,000 shares $62.42 million +10.5%N/A7 $3.60 9/15/202015,700,000 shares $64.68 million -10.1%N/A7.2 $4.12 8/31/202017,470,000 shares $64.64 million -1.0%N/A8.1 $3.70 8/14/202017,650,000 shares $64.78 million -0.7%N/A7.9 $3.67 7/31/202017,770,000 shares $73.03 million +9.7%N/A7.7 $4.11 7/15/202016,200,000 shares $74.68 million -1.7%N/A6.6 $4.61 6/30/202016,480,000 shares $75.81 million +38.3%N/A6.6 $4.60 6/15/202011,920,000 shares $55.19 million -1.2%N/A4.5 $4.63 IMGN Short Interest - Frequently Asked Questions What is ImmunoGen's current short interest? Short interest is the volume of ImmunoGen shares that have been sold short but have not yet been covered or closed out. As of January 31st, traders have sold 20,610,000 shares of IMGN short. Learn More on ImmunoGen's current short interest. What is a good short interest ratio for ImmunoGen? 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. IMGN shares currently have a short interest ratio of 2.0. Learn More on ImmunoGen's short interest ratio. Is ImmunoGen's short interest increasing or decreasing? ImmunoGen saw a increase in short interest in January. As of January 31st, there was short interest totaling 20,610,000 shares, an increase of 9.3% from the previous total of 18,860,000 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 ImmunoGen's short interest compare to its competitors? Here is how the short interest of companies in the industry of "biotechnology" compare to ImmunoGen: Biogen Inc. (2.28%), United Therapeutics Co. (4.77%), Incyte Co. (4.96%), Neurocrine Biosciences, Inc. (4.22%), Exelixis, Inc. (7.09%), BioMarin Pharmaceutical Inc. (2.38%), Exact Sciences Co. (6.10%), Halozyme Therapeutics, Inc. (8.77%), Repligen Co. (6.40%), Madrigal Pharmaceuticals, Inc. (23.76%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: T-Mobile US, Inc. ($4.48 billion), General Motors ($3.85 billion), Charter Communications, Inc. ($3.38 billion), Occidental Petroleum Co. ($3.00 billion), Super Micro Computer, Inc. ($2.66 billion), Tractor Supply ($2.37 billion), Coinbase Global, Inc. ($2.25 billion), Moderna, Inc. ($2.11 billion), Royal Caribbean Cruises Ltd. ($2.06 billion), and Floor & Decor Holdings, Inc. ($1.67 billion). View all of the most shorted stocks. What does it mean to sell short ImmunoGen stock? Short selling IMGN is an investing strategy that aims to generate trading profit from ImmunoGen as its price is falling. 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 ImmunoGen? A short squeeze for ImmunoGen 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 IMGN, which in turn drives the price of the stock up even further. How often is ImmunoGen's 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 IMGN, twice per month. The most recent reporting period available is January, 31 2024. More Short Interest Resources from MarketBeat Related Companies Biogen Short Interest Data United Therapeutics Short Interest Data Incyte Short Interest Data Neurocrine Biosciences Short Interest Data Exelixis Short Interest Data BioMarin Pharmaceutical Short Interest Data Exact Sciences Short Interest Data Halozyme Therapeutics Short Interest Data Repligen Short Interest Data Madrigal Pharmaceuticals 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:IMGN) was last updated on 6/4/2025 by MarketBeat.com Staff From Our PartnersFPV Drone Innovator Secures Major Defense ContractIn May, Ukraine launched Operation Spider Web - a 117-drone FPV swarm that devastated Russian fuel depots and ...The Tomorrow Investor | SponsoredJunior Explorer Taps Into TSMC’s $165 Billion Chip CorridorThe chip war is moving underground. 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