Surmodics (SRDX) Short Interest Ratio & Short Volume $35.63 -0.40 (-1.11%) Closing price 04:00 PM EasternExtended Trading$35.80 +0.17 (+0.49%) As of 04:14 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 EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Surmodics Short Interest DataSurmodics (SRDX) has a short interest of 331,800 shares, representing 2.42% of the float (the number of shares available for trading by the public). This marks a -3.10% decrease in short interest from the previous month. The short interest ratio (days to cover) is 4.1, indicating that it would take 4.1 days of the average trading volume of 176,955 shares to cover all short positions.Current Short Interest331,800 sharesPrevious Short Interest342,400 sharesChange Vs. Previous Month-3.10%Dollar Volume Sold Short$10.40 millionShort Interest Ratio4.1 Days to CoverLast Record DateJuly 15, 2025Outstanding Shares14,299,000 sharesFloat Size13,730,000 sharesShort Percent of Float2.42%Today's Trading Volume312,672 sharesAverage Trading Volume176,955 sharesToday's Volume Vs. Average177% Short Selling Surmodics? Sign up to receive the latest short interest report for Surmodics and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartSRDX Short Interest Over TimeSRDX Days to Cover Over TimeSRDX Percentage of Float Shorted Over Time Surmodics Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/15/2025331,800 shares $10.40 million -3.1%2.4%4.1 $31.33 6/30/2025342,400 shares $10.17 million -14.8%2.5%4.2 $29.71 6/15/2025401,700 shares $11.71 million -1.2%2.9%5 $29.16 5/31/2025406,600 shares $11.81 million -4.7%3.0%4.4 $29.04 5/15/2025426,700 shares $11.96 million -10.5%3.1%3.2 $28.03 4/30/2025476,500 shares $13.35 million +3.1%3.5%2.9 $28.01 4/15/2025462,300 shares $13.10 million +35.9%3.4%2.3 $28.34 3/31/2025340,200 shares $10.39 million +11.9%2.5%1.3 $30.53 3/15/2025303,900 shares $8.60 million +12.0%2.2%1.1 $28.30 2/28/2025271,300 shares $8.91 million -37.0%2.0%1 $32.86 Get the Latest News and Ratings for SRDX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Surmodics and its competitors with MarketBeat's FREE daily newsletter. 2/15/2025430,900 shares $14.69 million -28.4%3.2%1.7 $34.10 1/31/2025601,700 shares $20.48 million +30.0%4.4%2.4 $34.04 1/15/2025462,800 shares $17.04 million +33.0%3.4%2 $36.81 12/31/2024348,000 shares $13.78 million +3.4%2.5%1.7 $39.60 12/15/2024336,600 shares $13.47 million -0.4%2.5%1.7 $40.03 11/30/2024337,800 shares $13.33 million -3.0%2.5%1.5 $39.45 11/15/2024348,400 shares $13.49 million +5.3%2.5%1.4 $38.72 10/31/2024331,000 shares $12.42 million +4.2%2.4%1.2 $37.52 10/15/2024317,700 shares $12.25 million -1.8%2.3%1 $38.55 9/30/2024323,600 shares $12.55 million +0.8%2.4%0.9 $38.78 9/15/2024321,000 shares $12.63 million -25.3%2.4%0.8 $39.36 8/31/2024429,600 shares $17.03 million -7.0%3.2%1.1 $39.63 8/15/2024462,000 shares $18.35 million -36.9%3.4%1 $39.72 7/31/2024732,100 shares $30.31 million +4.6%5.4%1.8 $41.40 7/15/2024700,100 shares $29.38 million -12.7%5.1%2 $41.97 6/30/2024801,600 shares $33.70 million +32.4%5.9%2.7 $42.04 6/15/2024605,500 shares $25.40 million +18.0%4.4%2.6 $41.95 5/31/2024513,000 shares $21.58 million +2.4%3.8%2.9 $42.06 5/15/2024501,100 shares $16.82 million +1.1%3.7%7 $33.56 4/30/2024495,800 shares $12.74 million +4.8%3.6%6.9 $25.69 4/15/2024472,900 shares $12.49 million +5.8%3.5%7.5 $26.42 3/31/2024447,000 shares $13.11 million +1.3%3.3%9.8 $29.34 3/15/2024441,100 shares $12.43 million -1.1%3.2%10 $28.17 2/29/2024446,100 shares $14.23 million +3.8%3.3%7.9 $31.90 2/15/2024429,700 shares $13.99 million +6.9%3.2%7.3 $32.56 1/31/2024402,100 shares $14.16 million -6.9%3.0%6 $35.21 1/15/2024432,000 shares $14.57 million -3.3%3.2%5.9 $33.73 12/31/2023446,700 shares $16.24 million -8.4%3.3%6 $36.35 12/15/2023487,800 shares $18.41 million +8.0%3.6%6.7 $37.75 11/30/2023451,500 shares $14.82 million +91.9%3.3%7.5 $32.82Trump set to Boost Social Security Checks by 400%? 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No wonder the financial times called this new initiative...Click here to see the details because the stakes couldn't be any higher. 11/15/2023235,300 shares $7.96 million +71.0%1.7%3.7 $33.82 10/31/2023137,600 shares $4.05 million +1.8%1.0%2.1 $29.46 10/15/2023135,200 shares $4.01 million -8.0%1.0%1.9 $29.65 9/30/2023147,000 shares $4.72 million +18.7%1.1%2.3 $32.09 9/15/2023123,800 shares $4.29 million +1.4%0.9%1.9 $34.63 8/31/2023122,100 shares $4.50 million -10.8%0.9%1.4 $36.82 8/15/2023136,800 shares $5.13 million -9.8%1.0%1.5 $37.53 7/31/2023151,600 shares $4.86 million -7.2%1.1%1.7 $32.07 7/15/2023163,300 shares $4.91 million +7.7%1.2%1.8 $30.06 6/30/2023151,600 shares $4.75 million -16.2%1.1%1.6 $31.31 6/15/2023180,900 shares $4.60 million -30.5%1.3%1.5 $25.43 5/31/2023260,200 shares $4.77 million +4.3%1.9%1.5 $18.33 5/15/2023249,600 shares $4.74 million -6.9%1.8%1.4 $18.99 4/30/2023268,000 shares $6.17 million -29.9%2.0%1.4 $23.04 4/15/2023382,400 shares $9.00 million -3.1%2.8%2.1 $23.53 3/31/2023394,800 shares $8.99 million -27.5%2.9%2.1 $22.78 3/15/2023544,500 shares $9.47 million +24.8%4.0%3.2 $17.39 2/28/2023436,400 shares $9.53 million +17.1%3.2%5.2 $21.84 2/15/2023372,700 shares $9.51 million +9.2%2.8%5.7 $25.52 1/31/2023341,300 shares $9.59 million +16.8%2.5%5.7 $28.11 1/15/2023292,100 shares $10.58 million -1.7%2.2%5.3 $36.23 12/30/2022297,200 shares $10.14 million +48.6%2.2%7 $34.12 12/15/2022200,000 shares $7.19 million -16.6%1.5%4.7 $35.97 11/30/2022239,700 shares $8.66 million -21.3%1.8%6.3 $36.13 11/15/2022304,700 shares $10.60 million -16.0%2.3%7.8 $34.80 10/31/2022362,900 shares $12.39 million +3.1%2.7%10.2 $34.14 10/15/2022352,000 shares $10.39 million -1.9%2.6%9.5 $29.52 9/30/2022358,900 shares $10.91 million -7.3%2.7%9.5 $30.40 9/15/2022387,000 shares $11.93 million +8.1%2.9%10.4 $30.83 8/31/2022357,900 shares $12.06 million -8.7%2.7%9.5 $33.69 8/15/2022391,800 shares $15.16 million -5.2%2.9%10.8 $38.69 7/31/2022413,300 shares $14.38 million -0.7%3.1%10.8 $34.80 7/15/2022416,000 shares $14.97 million +18.3%3.1%11 $35.98 6/30/2022351,800 shares $13.10 million -5.0%2.6%9.5 $37.23 6/15/2022370,300 shares $13.65 million +7.3%2.7%9.6 $36.85 5/31/2022345,200 shares $13.54 million -4.8%2.6%9.3 $39.23 5/15/2022362,500 shares $13.02 million +17.7%2.7%8.9 $35.91 4/30/2022308,100 shares $11.91 million +2.7%2.3%7.1 $38.66 4/15/2022299,900 shares $12.73 million -17.8%2.2%6.4 $42.45 3/31/2022364,600 shares $16.53 million -18.7%2.7%7.2 $45.33 3/15/2022448,700 shares $18.67 million +22.6%3.3%8.8 $41.62 2/28/2022365,900 shares $16.42 million +6.1%2.7%6.6 $44.88 2/15/2022344,800 shares $14.97 million +18.5%2.6%6.1 $43.42 1/31/2022291,100 shares $13.30 million +6.3%2.2%4.9 $45.68 1/15/2022273,900 shares $12.89 million +8.0%2.0%5.1 $47.06 12/31/2021253,600 shares $12.21 million +17.6%1.9%5 $48.15 12/15/2021215,700 shares $9.76 million +9.0%1.6%4.2 $45.26 11/30/2021197,900 shares $8.69 million +9.4%1.5%3.9 $43.93 11/15/2021180,900 shares $8.84 million -37.1%1.4%3.7 $48.88 10/29/2021287,800 shares $16.02 million -1.4%2.2%6.8 $55.66Trump set to Boost Social Security Checks by 400%? (Ad)If you're collecting or planning to collect social security... You should see this presentation about President Trump's Executive Order #14196. Legendary investor Louis Navellier believes it could soon not only save Social Security from collapse... But BOOST benefits for millions of retirees by up to 400%. No wonder the financial times called this new initiative...Click here to see the details because the stakes couldn't be any higher. 10/15/2021291,800 shares $16.02 million -6.7%2.2%7.1 $54.90 9/30/2021312,800 shares $17.39 million -5.4%2.3%7.6 $55.60 9/15/2021330,500 shares $18.99 million +1.0%2.5%8.3 $57.47 8/31/2021327,100 shares $19.65 million +7.3%2.4%8.8 $60.07 8/13/2021304,900 shares $16.19 million -6.2%2.3%8.5 $53.10 7/30/2021324,900 shares $17.91 million -5.3%2.4%8.6 $55.11 7/15/2021343,000 shares $18.11 million -4.4%2.6%8.5 $52.81 6/30/2021358,900 shares $19.47 million -10.5%2.7%8.7 $54.25 6/15/2021401,000 shares $21.33 million -15.0%3.0%8.6 $53.20 5/28/2021472,000 shares $25.04 million +1.6%3.5%9.9 $53.05 5/14/2021464,800 shares $24.75 million +21.5%3.5%9.3 $53.24 4/30/2021382,700 shares $21.34 million -0.7%2.9%7.2 $55.76 4/15/2021385,200 shares $22.08 million +21.1%2.9%7.5 $57.33 3/31/2021318,200 shares $17.29 million -9.9%2.4%6.1 $54.35 3/15/2021353,200 shares $19.68 million +1.6%2.7%6.7 $55.73 2/26/2021347,800 shares $17.97 million -8.0%2.6%7.1 $51.68 2/12/2021378,000 shares $20.36 million -5.8%2.9%8 $53.86 1/29/2021401,400 shares $18.22 million +1.4%3.0%8.3 $45.39 1/15/2021395,900 shares $17.99 million -1.0%3.0%8.6 $45.43 12/31/2020399,700 shares $17.21 million +4.5%3.0%9.3 $43.06 12/15/2020382,400 shares $14.70 million +0.2%2.9%9.1 $38.43 11/30/2020381,800 shares $14.65 million +10.0%2.9%8.9 $38.36 11/15/2020347,200 shares $13.12 million +1.0%2.6%7.8 $37.78 10/30/2020343,900 shares $13.33 million +2.7%2.6%7.9 $38.76 10/15/2020334,800 shares $13.94 million -8.2%2.6%7.3 $41.65 9/30/2020364,700 shares $14.19 million +15.4%2.8%7.1 $38.91 9/15/2020316,100 shares $12.32 million -0.9%2.4%5.8 $38.98 8/31/2020319,000 shares $14.43 million -5.1%2.4%5.6 $45.25 8/14/2020336,200 shares $15.63 million -5.2%2.6%5.3 $46.48 SRDX Short Interest - Frequently Asked Questions What is Surmodics' current short interest? Short interest is the volume of Surmodics shares that have been sold short but have not yet been closed out or covered. As of July 15th, investors have sold 331,800 shares of SRDX short. 2.42% of Surmodics' shares are currently sold short. Learn More on Surmodics' current short interest. What is a good short interest ratio for Surmodics? 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. SRDX shares currently have a short interest ratio of 4.0. Learn More on Surmodics's short interest ratio. Which institutional investors are shorting Surmodics? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Surmodics: Jane Street Group LLC, and Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Surmodics? Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 2.42% of Surmodics' floating shares are currently sold short. Is Surmodics' short interest increasing or decreasing? Surmodics saw a decrease in short interest in the month of July. As of July 15th, there was short interest totaling 331,800 shares, a decrease of 3.1% from the previous total of 342,400 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. What is Surmodics' float size? Surmodics currently has issued a total of 14,299,000 shares. Some of Surmodics' outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Surmodics currently has a public float of 13,730,000 shares. How does Surmodics' short interest compare to its competitors? 2.42% of Surmodics' shares are currently sold short. Here is how the short interest of companies in the sector of "medical" compare to Surmodics: Alphatec Holdings, Inc. (8.82%), AtriCure, Inc. (3.06%), Integra LifeSciences Holdings Corporation (9.86%), Orthofix Medical Inc. (6.30%), AngioDynamics, Inc. (7.43%), Accuray Incorporated (2.51%), Rockwell Medical, Inc. (0.53%), ReShape Lifesciences Inc. (8.46%), Abbott Laboratories (1.10%), Intuitive Surgical, Inc. (1.08%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Coinbase Global, Inc. ($5.11 billion), Charter Communications, Inc. ($4.76 billion), Reddit Inc. ($2.84 billion), SoFi Technologies, Inc. ($2.79 billion), Seagate Technology Holdings PLC ($2.79 billion), Live Nation Entertainment, Inc. ($2.67 billion), Rocket Lab Corporation ($2.49 billion), AST SpaceMobile, Inc. ($2.12 billion), Moderna, Inc. ($2.09 billion), and Omnicom Group Inc. ($2.04 billion). View all of the most shorted stocks. What does it mean to sell short Surmodics stock? Short selling SRDX is an investing strategy that aims to generate trading profit from Surmodics as its price is falling. SRDX shares are trading down $0.40 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 Surmodics? A short squeeze for Surmodics occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of SRDX, which in turn drives the price of the stock up even further. How often is Surmodics' 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 SRDX, twice per month. The most recent reporting period available is July, 15 2025. More Short Interest Resources from MarketBeat Related Companies Alphatec Short Squeeze AtriCure Short Squeeze Integra LifeSciences Short Squeeze Orthofix Medical Short Squeeze AngioDynamics Short Squeeze Accuray Short Squeeze Rockwell Medical Short Squeeze ReShape Lifesciences Short Squeeze Abbott Laboratories Short Squeeze Intuitive Surgical 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:SRDX) was last updated on 8/4/2025 by MarketBeat.com Staff From Our PartnersThe biggest Gold Rush of our lives is here — and Buffett knows itSome of the world’s best gold developers are trading at just 30% of NAV — like buying a dollar for 30 cents. ...Golden Portfolio | SponsoredTrump set to Boost Social Security Checks by 400%?If you're collecting or planning to collect social security... 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