Surmodics (SRDX) Short Interest Ratio & Short Volume $37.19 +1.10 (+3.05%) Closing price 08/22/2025 04:00 PM EasternExtended Trading$37.15 -0.04 (-0.11%) As of 08/22/2025 05:58 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 385,500 shares, representing 2.81% of the float (the number of shares available for trading by the public). This marks a 16.18% increase in short interest from the previous month. The short interest ratio (days to cover) is 3.0, indicating that it would take 3.0 days of the average trading volume of 381,839 shares to cover all short positions.Current Short Interest385,500 sharesPrevious Short Interest331,800 sharesChange Vs. Previous Month+16.18%Dollar Volume Sold Short$13.84 millionShort Interest Ratio3.0 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares14,300,000 sharesFloat Size13,730,000 sharesShort Percent of Float2.81%Today's Trading Volume966,851 sharesAverage Trading Volume381,839 sharesToday's Volume Vs. Average253% 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 7/31/2025385,500 shares $13.84 million +16.2%2.8%3 $35.90 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 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. 2/28/2025271,300 shares $8.91 million -37.0%2.0%1 $32.86 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 $37.75Market Panic: Trump Just Dropped a Bomb on Your Stocks (Ad)tock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tariffs just lit the fuse. Millions of investors are blindsided as stocks plunge… but this is only Phase 1. If you're still holding the wrong assets, you could lose 30% or more in the coming weeks.Don't wait for the next drop to wipe you out. Get the FREE Guide Before Markets Open Tomorrow 11/30/2023451,500 shares $14.82 million +91.9%3.3%7.5 $32.82 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 $48.88Market Panic: Trump Just Dropped a Bomb on Your Stocks (Ad)tock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tariffs just lit the fuse. Millions of investors are blindsided as stocks plunge… but this is only Phase 1. If you're still holding the wrong assets, you could lose 30% or more in the coming weeks.Don't wait for the next drop to wipe you out. Get the FREE Guide Before Markets Open Tomorrow 10/29/2021287,800 shares $16.02 million -1.4%2.2%6.8 $55.66 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 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 covered or closed out. As of July 31st, traders have sold 385,500 shares of SRDX short. 2.81% 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 3.0. 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: Group One Trading LLC, Jane Street Group LLC, Caption Management 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. 2.81% of Surmodics' floating shares are currently sold short. Is Surmodics' short interest increasing or decreasing? Surmodics saw a increase in short interest during the month of July. As of July 31st, there was short interest totaling 385,500 shares, an increase of 16.2% from the previous total of 331,800 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 14,300,000 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? 2.81% of Surmodics' shares are currently sold short. Here is how the short interest of companies in the sector of "medical" compare to Surmodics: AtriCure, Inc. (4.63%), Integra LifeSciences Holdings Corporation (10.38%), Orthofix Medical Inc. (6.26%), AngioDynamics, Inc. (9.55%), Accuray Incorporated (2.25%), Rockwell Medical, Inc. (0.35%), ReShape Lifesciences Inc. (9.54%), Abbott Laboratories (1.06%), Intuitive Surgical, Inc. (1.21%), Boston Scientific Corporation (1.10%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 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 up $1.10 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, 31 2025. More Short Interest Resources from MarketBeat Related Companies 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 Boston Scientific 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 8/25/2025 by MarketBeat.com Staff From Our PartnersGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. B...Priority Gold | SponsoredBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. 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