Tetra Tech (TTEK) Short Interest Ratio & Short Volume $36.60 +0.50 (+1.39%) Closing price 04:00 PM EasternExtended Trading$35.62 -0.98 (-2.68%) As of 04:10 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 ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Tetra Tech Short Interest DataTetra Tech (TTEK) has a short interest of 10.31 million shares, representing 3.93% of the float (the number of shares available for trading by the public). This marks a 4.56% increase in short interest from the previous month. The short interest ratio (days to cover) is 4.8, indicating that it would take 4.8 days of the average trading volume of 2.12 million shares to cover all short positions.Current Short Interest10,310,000 sharesPrevious Short Interest9,860,000 sharesChange Vs. Previous Month+4.56%Dollar Volume Sold Short$371.78 millionShort Interest Ratio4.8 Days to CoverLast Record DateJune 15, 2025Outstanding Shares263,500,000 sharesShort Percent of Float3.93%Today's Trading Volume1,467,647 sharesAverage Trading Volume2,124,998 sharesToday's Volume Vs. Average69% Short Selling Tetra Tech? Sign up to receive the latest short interest report for Tetra Tech and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartTTEK Short Interest Over TimeTTEK Days to Cover Over TimeTTEK Percentage of Float Shorted Over Time Tetra Tech Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/15/202510,310,000 shares $371.78 million +4.6%3.9%4.8 $36.06 5/31/20259,860,000 shares $344.90 million +7.6%3.7%4.4 $34.98 5/15/20259,160,000 shares $322.25 million +2.9%3.4%3.8 $35.18 4/30/20258,900,000 shares $277.59 million +1.0%N/A3.6 $31.19 4/15/20258,810,000 shares $264.12 million -5.6%3.3%2.9 $29.98 3/31/20259,330,000 shares $272.90 million +3.3%3.5%3 $29.25 3/15/20259,030,000 shares $262.95 million +9.5%3.4%3.1 $29.12 2/28/20258,250,000 shares $240.82 million +4.3%3.1%2.9 $29.19 2/15/20257,910,000 shares $242.05 million +66.5%3.0%2.9 $30.60 1/31/20254,750,000 shares $174.80 million -3.3%N/A1.6 $36.80 Get the Latest News and Ratings for TTEK and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Tetra Tech and its competitors with MarketBeat's FREE daily newsletter. 1/15/20254,910,000 shares $205.63 million -4.7%N/A2.2 $41.88 12/31/20245,150,000 shares $205.18 million +5.1%N/A2.5 $39.84 12/15/20244,900,000 shares $206.00 million +4.0%N/A2.4 $42.04 11/30/20244,710,000 shares $195.51 million -7.5%N/A2.5 $41.51 11/15/20245,090,000 shares $210.06 million +29.9%N/A2.9 $41.27 10/31/20243,920,000 shares $191.61 million +15.3%N/A3 $48.88 10/15/20243,400,000 shares $166.80 million -2.0%N/A2.5 $49.06 9/30/20243,470,000 shares $163.65 million +0.9%N/A2.7 $47.16 9/15/20243,440,000 shares $159.07 million +6.2%N/A2.6 $46.24 8/31/20243,240,000 shares $154.06 million +220.8%N/A2.3 $47.55 8/15/20241,010,000 shares $230.68 million +7.4%1.9%3.4 $228.40 7/31/2024940,200 shares $200.49 million +0.4%1.8%3.1 $213.24 7/15/2024936,600 shares $190.90 million +4.9%1.8%3.2 $203.82 6/30/2024893,300 shares $182.66 million -7.0%1.7%3 $204.48 6/15/2024960,400 shares $200.37 million -2.3%1.8%3.4 $208.63 5/31/2024983,200 shares $205.97 million +6.7%1.9%3.6 $209.49 5/15/2024921,600 shares $200.24 million -2.7%1.7%3.4 $217.27 4/30/2024946,800 shares $184.36 million -10.7%1.8%3.3 $194.72 4/15/20241,060,000 shares $203.38 million +24.4%2.0%3.9 $191.87 3/31/2024852,100 shares $157.39 million -5.6%1.6%3.3 $184.71 3/15/2024902,600 shares $161.32 million +6.9%1.7%3.6 $178.73 2/29/2024844,000 shares $149.66 million -12.5%1.6%3.3 $177.32 2/15/2024964,800 shares $174.29 million +13.7%1.8%3.6 $180.65 1/31/2024848,600 shares $134.23 million -8.7%1.6%3.1 $158.18 1/15/2024929,300 shares $155.55 million +4.8%1.8%3.5 $167.38 12/31/2023886,900 shares $148.05 million -8.9%1.7%3.2 $166.93 12/15/2023973,700 shares $161.18 million -2.3%1.9%3.2 $165.53 11/30/2023996,200 shares $157.55 million +2.9%1.9%3.1 $158.15 11/15/2023968,100 shares $153.18 million -5.1%1.8%3 $158.23 10/31/20231,020,000 shares $153.93 million -7.3%1.9%3 $150.91Banks aren’t ready for this altcoin—are you? (Ad)Want to see why we believe this could be the next evolution of financial infrastructure? The old financial system is showing cracks—and this altcoin might be ready to take its placeClick here to discover our top crypto pick for the market right now. 10/15/20231,100,000 shares $174.27 million +0.9%2.1%3.2 $158.43 9/30/20231,090,000 shares $165.71 million +3.8%2.1%3.3 $152.03 9/15/20231,050,000 shares $167.17 million +9.1%2.0%3.3 $159.21 8/31/2023962,400 shares $151.43 million +68.7%1.8%3 $157.35 8/15/2023570,600 shares $95.22 million -9.6%1.1%1.7 $166.87 7/31/2023631,200 shares $106.81 million -9.9%1.2%2 $169.21 7/15/2023700,500 shares $119.51 million +3.0%1.3%2.3 $170.61 6/30/2023680,200 shares $111.38 million -0.7%1.3%2.3 $163.74 6/15/2023684,700 shares $110.04 million +20.0%1.3%2.3 $160.71 5/31/2023570,600 shares $78.44 million -17.3%1.1%2.1 $137.47 5/15/2023690,300 shares $99.47 million +1.0%1.3%2.7 $144.09 4/30/2023683,400 shares $94.56 million +13.8%1.3%2.6 $138.37 4/15/2023600,500 shares $85.73 million -17.2%1.1%2.2 $142.77 3/31/2023725,200 shares $106.54 million -8.4%1.4%2.7 $146.91 3/15/2023791,900 shares $110.65 million +6.1%1.5%2.9 $139.73 2/28/2023746,100 shares $102.13 million +38.4%1.4%2.8 $136.89 2/15/2023539,100 shares $78.36 million -9.4%1.0%2 $145.35 1/31/2023594,800 shares $92.50 million -24.1%1.1%2.1 $155.52 1/15/2023783,800 shares $116.44 million -1.2%1.5%3 $148.56 12/30/2022793,500 shares $115.21 million -6.5%1.5%3 $145.19 12/15/2022848,500 shares $128.06 million +11.7%1.6%3.1 $150.93 11/30/2022759,800 shares $117.46 million -13.3%1.5%2.8 $154.59 11/15/2022875,900 shares $138.20 million -5.6%1.7%3.4 $157.78 10/31/2022927,700 shares $131.07 million -10.8%1.8%3.7 $141.28 10/15/20221,040,000 shares $128.18 million No Change2.0%3.9 $123.25 9/30/20221,040,000 shares $133.67 million +2.0%2.0%4.1 $128.53 9/15/20221,020,000 shares $136.12 million -8.9%1.9%2.7 $133.45 8/31/20221,120,000 shares $152.11 million -0.9%2.1%2.8 $135.81 8/15/20221,130,000 shares $170.04 million -5.0%2.1%2.7 $150.48 7/31/20221,190,000 shares $182.39 million +2.6%2.2%2.7 $153.27 7/15/20221,160,000 shares $159.62 million -3.3%2.2%2.6 $137.60 6/30/20221,200,000 shares $163.86 million -44.4%2.3%2.6 $136.55 6/15/20222,160,000 shares $273.05 million +7.5%4.1%4.9 $126.41 5/31/20222,010,000 shares $271.29 million +11.1%3.8%6.4 $134.97 5/15/20221,810,000 shares $226.58 million +17.5%3.4%5.9 $125.18 4/30/20221,540,000 shares $214.49 million +12.4%2.9%4.7 $139.28 4/15/20221,370,000 shares $203.75 million +9.6%2.6%4.1 $148.72 3/31/20221,250,000 shares $206.18 million -6.7%2.3%3.7 $164.94 3/15/20221,340,000 shares $215.91 million +9.8%2.5%3.9 $161.13 2/28/20221,220,000 shares $193.70 million -3.9%2.3%3.3 $158.77 2/15/20221,270,000 shares $196.33 million +50.4%2.4%3.5 $154.59 1/31/2022844,300 shares $117.52 million +1.4%1.6%2.6 $139.19 1/15/2022832,700 shares $123.09 million +8.7%1.6%3 $147.82 12/31/2021766,000 shares $130.07 million -12.6%N/A0 $169.80 12/15/2021875,900 shares $147.22 million +0.2%1.6%3.5 $168.08 11/30/2021874,100 shares $161.43 million -2.1%1.7%4 $184.68 11/15/2021892,900 shares $160.50 million -10.5%1.7%4.2 $179.75 10/29/2021997,900 shares $175.29 million -5.0%1.9%4.8 $175.66 10/15/20211,050,000 shares $170.18 million +1.0%2.0%5.1 $162.08 9/30/20211,040,000 shares $155.31 million -6.3%2.0%5.1 $149.34Banks aren’t ready for this altcoin—are you? (Ad)Want to see why we believe this could be the next evolution of financial infrastructure? The old financial system is showing cracks—and this altcoin might be ready to take its placeClick here to discover our top crypto pick for the market right now. 9/15/20211,110,000 shares $162.54 million +20.2%2.1%5.2 $146.43 8/31/2021923,800 shares $132.88 million -5.0%1.7%4.1 $143.84 8/13/2021972,600 shares $136.35 million +13.5%1.8%4 $140.19 7/30/2021857,000 shares $114.43 million +15.6%1.6%3.3 $133.52 7/15/2021741,400 shares $91.82 million +3.1%1.4%2.7 $123.85 6/30/2021719,200 shares $87.77 million -26.6%1.4%2.4 $122.04 6/15/2021979,800 shares $121.25 million -16.3%1.8%3.4 $123.75 5/28/20211,170,000 shares $139.78 million +3.5%2.2%4.1 $119.47 5/14/20211,130,000 shares $137.06 million +16.8%2.1%3.9 $121.29 4/30/2021967,800 shares $122.95 million -1.3%1.8%3.1 $127.04 4/15/2021980,800 shares $131.57 million +6.5%1.8%3 $134.15 3/31/2021920,600 shares $123.02 million +2.0%1.7%2.9 $133.63 3/15/2021902,600 shares $120.35 million -9.4%1.7%2.6 $133.34 2/26/2021996,000 shares $139.49 million -1.4%1.9%2.8 $140.05 2/12/20211,010,000 shares $136.25 million +2.2%1.9%3 $134.90 1/29/2021988,000 shares $125.67 million +10.8%1.9%2.8 $127.20 1/15/2021891,500 shares $119.51 million -6.3%1.7%2.7 $134.05 12/31/2020951,400 shares $110.20 million +17.4%1.8%3.1 $115.83 12/15/2020810,700 shares $93.90 million -31.3%1.5%2.6 $115.83 11/30/20201,180,000 shares $144.96 million +8.3%2.2%3.8 $122.85 11/15/20201,090,000 shares $127.68 million +12.0%2.1%3.7 $117.14 10/30/2020973,300 shares $99.03 million -5.5%1.8%3.7 $101.75 10/15/20201,030,000 shares $112.26 million +34.1%1.9%3.9 $108.99 9/30/2020768,300 shares $73.37 million +4.6%1.5%2.9 $95.50 9/15/2020734,200 shares $68.43 million -11.7%1.4%2.8 $93.20 8/31/2020831,200 shares $76.73 million -7.5%1.6%3.3 $92.31 8/14/2020898,600 shares $84.39 million -3.3%1.7%3.4 $93.91 7/31/2020929,000 shares $82.36 million +19.5%1.8%3.2 $88.65 7/15/2020777,300 shares $60.89 million +4.0%1.5%2.5 $78.33 TTEK Short Interest - Frequently Asked Questions What is Tetra Tech's current short interest? Short interest is the volume of Tetra Tech shares that have been sold short but have not yet been covered or closed out. As of June 15th, traders have sold 10,310,000 shares of TTEK short. 3.93% of Tetra Tech's shares are currently sold short. Learn More on Tetra Tech's current short interest. What is a good short interest ratio for Tetra Tech? 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. TTEK shares currently have a short interest ratio of 5.0. Learn More on Tetra Tech's short interest ratio. Which institutional investors are shorting Tetra Tech? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Tetra Tech: Cubist Systematic Strategies LLC, PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, Hsbc Holdings PLC, Simplex Trading LLC, Bank of Nova Scotia, and Portman Square Capital LLP. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Tetra Tech? 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. 3.93% of Tetra Tech's floating shares are currently sold short. Is Tetra Tech's short interest increasing or decreasing? Tetra Tech saw a increase in short interest during the month of June. As of June 15th, there was short interest totaling 10,310,000 shares, an increase of 4.6% from the previous total of 9,860,000 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 Tetra Tech's short interest compare to its competitors? 3.93% of Tetra Tech's shares are currently sold short. Here is how the short interest of companies compare to Tetra Tech: Rollins, Inc. (2.57%), Clean Harbors, Inc. (1.48%), Casella Waste Systems, Inc. (3.78%), ABM Industries Incorporated (3.22%), Team, Inc. (0.44%), Waste Management, Inc. (0.90%), Republic Services, Inc. (1.21%), Donaldson Company, Inc. (2.19%), Atmus Filtration Technologies Inc. (2.30%), CECO Environmental Corp. (7.57%), 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 ($69.26 billion), Invesco QQQ ($25.22 billion), iShares Russell 2000 ETF ($20.33 billion), iShares 20+ Year Treasury Bond ETF ($9.99 billion), MicroStrategy Incorporated ($9.12 billion), Canadian Natural Resources Limited ($6.73 billion), SPDR S&P Biotech ETF ($6.52 billion), Invesco S&P 500 Equal Weight ETF ($5.60 billion), Financial Select Sector SPDR Fund ($4.64 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.59 billion). View all of the most shorted stocks. What does it mean to sell short Tetra Tech stock? Short selling TTEK is an investing strategy that aims to generate trading profit from Tetra Tech as its price is falling. TTEK shares are trading up $0.04 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 Tetra Tech? A short squeeze for Tetra Tech 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 TTEK, which in turn drives the price of the stock up even further. How often is Tetra Tech'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 TTEK, twice per month. The most recent reporting period available is June, 15 2025. More Short Interest Resources from MarketBeat Related Companies ROL Short Interest CLH Short Interest CWST Short Interest ABM Short Interest TISI Short Interest WM Short Interest RSG Short Interest DCI Short Interest ATMU Short Interest CECO Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:TTEK) was last updated on 7/2/2025 by MarketBeat.com Staff From Our PartnersGet Your Bank Account “Fed Invasion” Ready with THESE 4 Simple StepsStarting as soon as a few months from now, the United States government will make a sweeping change to bank ac...Weiss Ratings | SponsoredThe Trump Dump is starting; Get out of stocks now?The first 365 days of the Trump presidency… Will be the best time to get rich in American history.Paradigm Press | SponsoredBuffett’s $325 Billion Cash Problem — Solved by Gold?A bombshell announcement is just weeks away — and it could send shockwaves through the gold market. 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