Sutro Biopharma (STRO) Short Interest Ratio & Short Volume $1.77 -0.06 (-3.28%) Closing price 02/21/2025 04:00 PM EasternExtended Trading$1.80 +0.03 (+1.75%) As of 02/21/2025 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 Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends Sutro Biopharma Short Interest DataSutro Biopharma (STRO) has a short interest of 4.07 million shares. This marks a 5.71% increase in short interest from the previous month. The short interest ratio (days to cover) is 3.8, indicating that it would take 3.8 days of the average trading volume of 927,669 shares to cover all short positions.Current Short Interest4,070,000 sharesPrevious Short Interest3,850,000 sharesChange Vs. Previous Month+5.71%Dollar Volume Sold Short$7.81 millionShort Interest Ratio3.8 Days to CoverLast Record DateJanuary 31, 2025Outstanding Shares82,460,000 sharesPercentage of Shares Shorted4.94%Today's Trading Volume460,058 sharesAverage Trading Volume927,669 sharesToday's Volume Vs. Average50% Short Selling Sutro Biopharma? Sign up to receive the latest short interest report for Sutro Biopharma and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartSTRO Short Interest Over TimeSTRO Days to Cover Over TimeSTRO Percentage of Float Shorted Over Time Sutro Biopharma Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 1/31/20254,070,000 shares $7.81 million +5.7%N/A3.8 $1.92 1/15/20253,850,000 shares $7.05 million +22.2%N/A3.9 $1.83 12/31/20243,150,000 shares $5.80 million +28.1%N/A3.4 $1.84 12/15/20242,460,000 shares $5.22 million +19.4%N/A2.7 $2.12 11/30/20242,060,000 shares $5.46 million +15.1%N/A2.6 $2.65 11/15/20241,790,000 shares $5.17 million -25.4%N/A2.8 $2.89 10/31/20242,400,000 shares $7.80 million -16.1%N/A4 $3.25 10/15/20242,860,000 shares $10.95 million No ChangeN/A4.9 $3.83 9/30/20242,860,000 shares $9.90 million -4.4%N/A4.4 $3.46 9/15/20242,990,000 shares $13.46 million -1.0%N/A4 $4.50 Get the Latest News and Ratings for STRO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Sutro Biopharma and its competitors with MarketBeat's FREE daily newsletter. 8/31/20243,020,000 shares $13.80 million -10.9%N/A4.1 $4.57 8/15/20243,390,000 shares $13.70 million +6.3%N/A4.5 $4.04 7/31/20243,190,000 shares $12.66 million -13.8%N/A3.9 $3.97 7/15/20243,700,000 shares $15.61 million +14.6%N/A4.5 $4.22 6/30/20243,230,000 shares $9.46 million +41.1%N/A3.8 $2.93 6/15/20242,290,000 shares $7.92 million +20.5%N/A2.3 $3.46 5/31/20241,900,000 shares $8.03 million -2.6%N/A1.9 $4.23 5/15/20241,950,000 shares $7.66 million No ChangeN/A1.9 $3.93 4/30/20241,950,000 shares $6.62 million -10.6%N/A2 $3.40 4/15/20242,180,000 shares $9.03 million -9.5%N/A2.2 $4.14 3/31/20242,410,000 shares $13.62 million +3.9%N/A2.3 $5.65 3/15/20242,320,000 shares $9.54 million -3.7%N/A2.6 $4.11 2/29/20242,410,000 shares $11.83 million -9.7%N/A2.9 $4.91 2/15/20242,670,000 shares $11.99 million +2.3%N/A3.2 $4.49 1/31/20242,610,000 shares $11.33 million +8.8%N/A2.9 $4.34 1/15/20242,400,000 shares $9.60 million +1.7%N/A2.7 $4.00 12/31/20232,360,000 shares $10.12 million +24.2%N/A2.6 $4.29 12/15/20231,900,000 shares $7.56 million -8.2%N/A2.4 $3.98 11/30/20232,070,000 shares $5.40 million -10.0%N/A3 $2.61 11/15/20232,300,000 shares $5.66 million -3.0%N/A3.7 $2.46 10/31/20232,370,000 shares $6.52 million -4.4%N/A5.3 $2.75 10/15/20232,480,000 shares $9.77 million +5.1%N/A6.2 $3.94 9/30/20232,360,000 shares $8.19 million -2.5%N/A6.3 $3.47 9/15/20232,420,000 shares $9.46 million +28.7%N/A7.9 $3.91 8/31/20231,880,000 shares $8.93 million -2.1%N/A4.5 $4.75 8/15/20231,920,000 shares $8.20 million -1.5%N/A4.5 $4.27 7/31/20231,950,000 shares $8.72 million -1.5%N/A4.3 $4.47 7/15/20231,980,000 shares $9.37 million +2.1%N/A4 $4.73 6/30/20231,940,000 shares $9.02 million -36.8%N/A3.8 $4.65 6/15/20233,070,000 shares $16.61 million +2.0%N/A5.6 $5.419/9 on TSLA from June to January (Ad)Please take a look at THIS case study on Target (TGT) You’ll see exactly how the tool works to trade long and short, even when the markets seem to be predicting the exact opposite. Now, this tool has been so accurate over recent months that I’m planning to send you 14 more real-world examples of winning trades that anyone using this tool could have captured. And it’s all building to Monday, February 24 @ 1pm ET when I’ll bring the tool to the public for the first time and show you how you can put it on your own charts!Tap here to catch the TGT case study and learn more 5/31/20233,010,000 shares $13.51 million -2.9%N/A6.2 $4.49 5/15/20233,100,000 shares $18.23 million +4.4%N/A6.6 $5.88 4/30/20232,970,000 shares $12.65 million -2.3%N/A6.5 $4.26 4/15/20233,040,000 shares $13.38 million +8.6%N/A7.1 $4.40 3/31/20232,800,000 shares $12.94 million +77.2%N/A5.5 $4.62 3/15/20231,580,000 shares $8.53 million -16.0%N/A2.9 $5.40 2/28/20231,880,000 shares $10.60 million +0.5%N/A3.3 $5.64 2/15/20231,870,000 shares $11.61 million -3.6%N/A3.3 $6.21 1/31/20231,940,000 shares $14.05 million -8.1%N/A3.4 $7.24 1/15/20232,110,000 shares $16.61 million +8.2%N/A3.6 $7.87 12/30/20221,950,000 shares $15.76 million -22.9%N/A3.7 $8.08 12/15/20222,530,000 shares $18.60 million -4.2%N/A5.3 $7.35 11/30/20222,640,000 shares $19.77 million -30.7%N/A6.9 $7.49 11/15/20223,810,000 shares $27.93 million -8.2%N/A10.7 $7.33 10/31/20224,150,000 shares $30.42 million +0.2%9.2%12.6 $7.33 10/15/20224,140,000 shares $23.14 million +2.7%9.2%11.3 $5.59 9/30/20224,030,000 shares $22.37 million -5.0%8.9%11.3 $5.55 9/15/20224,240,000 shares $24.34 million -11.3%9.4%5.8 $5.74 8/31/20224,780,000 shares $27.05 million -7.9%10.8%5.8 $5.66 8/15/20225,190,000 shares $36.90 million +7.7%11.7%5.7 $7.11 7/31/20224,820,000 shares $28.20 million -1.0%12.1%5 $5.85 7/15/20224,870,000 shares $28.49 million -12.7%12.7%5 $5.85 6/30/20225,580,000 shares $29.07 million +22.1%14.6%5.8 $5.21 6/15/20224,570,000 shares $17.55 million +33.2%11.9%7.3 $3.84 5/31/20223,430,000 shares $14.92 million +7.9%9.0%6.1 $4.35 5/15/20223,180,000 shares $14.63 million +49.3%8.3%6.5 $4.60 4/30/20222,130,000 shares $12.80 million +17.0%5.9%4.5 $6.01 4/15/20221,820,000 shares $13.21 million +9.0%5.1%3.7 $7.26 3/31/20221,670,000 shares $13.73 million +31.5%4.7%3.3 $8.22 3/15/20221,270,000 shares $10.29 million -15.9%3.5%2.2 $8.10 2/28/20221,510,000 shares $13.47 million -0.7%4.2%2.8 $8.92 2/15/20221,520,000 shares $13.77 million -9.5%4.2%2.8 $9.06 1/31/20221,680,000 shares $17.94 million -17.2%4.6%3.2 $10.68 1/15/20222,030,000 shares $21.72 million -13.6%5.6%4.8 $10.70 12/31/20212,350,000 shares $34.97 million +3.1%N/A6.4 $14.88 12/15/20212,280,000 shares $35.23 million +34.9%6.3%9.4 $15.45 11/30/20211,690,000 shares $28.87 million +3.7%4.7%7.3 $17.08 11/15/20211,630,000 shares $31.21 million -14.2%4.5%7.7 $19.15 10/29/20211,900,000 shares $38.30 million -1.0%5.3%8.8 $20.16 10/15/20211,920,000 shares $36.46 million -9.0%5.3%8.1 $18.99 9/30/20212,110,000 shares $39.86 million -16.6%5.8%8.1 $18.89 9/15/20212,530,000 shares $50.57 million -10.3%7.0%8.2 $19.99 8/31/20212,820,000 shares $61.25 million -2.1%7.8%8.3 $21.72 8/13/20212,880,000 shares $54.40 million -2.4%8.0%7.9 $18.89 7/30/20212,950,000 shares $50.24 million -0.3%8.1%7.3 $17.03 7/15/20212,960,000 shares $51.56 million -3.6%8.3%7.4 $17.42 6/30/20213,070,000 shares $57.07 million -9.4%8.6%7.4 $18.59 6/15/20213,390,000 shares $62.00 million -3.4%9.5%7.9 $18.29 5/28/20213,510,000 shares $65.32 million -4.9%9.9%7.4 $18.61 5/14/20213,690,000 shares $69.48 million No ChangeN/A7.5 $18.839/9 on TSLA from June to January (Ad)Please take a look at THIS case study on Target (TGT) You’ll see exactly how the tool works to trade long and short, even when the markets seem to be predicting the exact opposite. 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And it’s all building to Monday, February 24 @ 1pm ET when I’ll bring the tool to the public for the first time and show you how you can put it on your own charts!Tap here to catch the TGT case study and learn more 4/30/20213,690,000 shares $77.16 million No ChangeN/A7.7 $20.91 4/15/20213,690,000 shares $73.50 million +4.2%N/A7.1 $19.92 3/31/20213,540,000 shares $74.48 million +139.2%N/A6.4 $21.04 3/15/20211,480,000 shares $34.65 million +29.8%N/A2.6 $23.41 2/26/20211,140,000 shares $24.77 million +10.7%N/A1.8 $21.73 2/12/20211,030,000 shares $24.74 million +12.5%N/A1.6 $24.02 1/29/2021916,000 shares $20.43 million -19.7%N/A1.4 $22.30 1/15/20211,140,000 shares $29.56 million +1.8%N/A1.9 $25.93 12/31/20201,120,000 shares $24.45 million +85.3%N/A2.1 $21.83 12/15/2020604,400 shares $13.13 million -75.6%N/A1.2 $21.73 11/30/20202,480,000 shares $42.41 million -4.6%N/A5 $17.10 11/15/20202,600,000 shares $44.80 million -1.5%N/A6.9 $17.23 10/30/20202,640,000 shares $34.87 million -0.8%N/A6.8 $13.21 10/15/20202,660,000 shares $32.53 million -0.8%N/A7.8 $12.23 9/30/20202,680,000 shares $26.93 million +100.0%N/A7.9 $10.05 9/15/20201,340,000 shares $14.94 million +78.1%N/A3.9 $11.15 8/31/2020752,300 shares $7.53 million +3.9%3.3%2.6 $10.01 8/14/2020724,100 shares $6.15 million -5.6%3.2%3.9 $8.49 7/31/2020767,300 shares $5.96 million -3.3%N/A4.6 $7.77 7/15/2020793,500 shares $6.94 million +11.5%3.5%4.9 $8.74 6/30/2020711,600 shares $5.60 million +450.8%3.1%4.8 $7.87 6/15/2020129,200 shares $1.15 million +101.6%0.6%1.2 $8.88 5/29/202064,100 shares $615,360.00 +3.9%0.4%0.8 $9.60 5/15/202061,700 shares $556,534.00 -28.1%0.4%0.9 $9.02 4/30/202085,800 shares $845,130.00 +46.2%0.7%2.1 $9.85 4/15/202058,700 shares $588,761.00 -6.1%0.6%1.3 $10.03 3/31/202062,500 shares $690,625.00 -9.3%0.7%1.1 $11.05 3/13/202068,900 shares $692,445.00 +53.8%0.8%2.9 $10.05 2/28/202044,800 shares $388,416.00 +1.6%0.5%0.7 $8.67 STRO Short Interest - Frequently Asked Questions What is Sutro Biopharma's current short interest? Short interest is the volume of Sutro Biopharma shares that have been sold short but have not yet been closed out or covered. As of January 31st, traders have sold 4,070,000 shares of STRO short. Learn More on Sutro Biopharma's current short interest. What is a good short interest ratio for Sutro Biopharma? 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. STRO shares currently have a short interest ratio of 4.0. Learn More on Sutro Biopharma's short interest ratio. Which institutional investors are shorting Sutro Biopharma? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Sutro Biopharma: Citadel Advisors LLC, and Concourse Financial Group Securities Inc.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is Sutro Biopharma's short interest increasing or decreasing? Sutro Biopharma saw a increase in short interest in the month of January. As of January 31st, there was short interest totaling 4,070,000 shares, an increase of 5.7% from the previous total of 3,850,000 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 Sutro Biopharma's short interest compare to its competitors? Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Sutro Biopharma: ORIC Pharmaceuticals, Inc. (14.71%), Rapport Therapeutics (8.64%), Precigen, Inc. (11.70%), Stoke Therapeutics, Inc. (16.97%), Cullinan Therapeutics, Inc. (23.70%), Autolus Therapeutics plc (3.42%), Valneva SE (0.05%), Xeris Biopharma Holdings, Inc. (7.04%), Tectonic Therapeutic (13.84%), MeiraGTx Holdings plc (2.66%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: AppLovin Co. ($5.21 billion), Charter Communications, Inc. ($4.07 billion), Reddit, Inc. ($3.33 billion), The Kroger Co. ($2.67 billion), Cencora, Inc. ($2.29 billion), Hims & Hers Health, Inc. ($2.17 billion), SoFi Technologies, Inc. ($1.99 billion), Live Nation Entertainment, Inc. ($1.87 billion), Rivian Automotive, Inc. ($1.76 billion), and Moderna, Inc. ($1.60 billion). View all of the most shorted stocks. What does it mean to sell short Sutro Biopharma stock? Short selling STRO is an investing strategy that aims to generate trading profit from Sutro Biopharma as its price is falling. STRO shares are trading down $0.06 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 Sutro Biopharma? A short squeeze for Sutro Biopharma 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 STRO, which in turn drives the price of the stock up even further. How often is Sutro Biopharma'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 STRO, twice per month. The most recent reporting period available is January, 31 2025. More Short Interest Resources from MarketBeat Related Companies ORIC Short Squeeze RAPP Short Squeeze PGEN Short Squeeze STOK Short Squeeze CGEM Short Squeeze AUTL Short Squeeze VALN Short Squeeze XERS Short Squeeze TECX Short Squeeze MGTX Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:STRO) was last updated on 2/22/2025 by MarketBeat.com Staff From Our PartnersWhat is this southern state hiding?The financial press had a field day this week after President Donald Trump and Department of Government Effici...Stansberry Research | SponsoredWhy Buffett and 100 members of Congress are Piling into this One InvestmentThis isn't just another investment. It might be the last retirement stock you'll ever need. But this win...Behind the Markets | SponsoredCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... 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