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Tetra Tech (TTEK) Short Interest Ratio & Short Volume

Tetra Tech logo
$35.71 -0.40 (-1.11%)
As of 03:55 PM Eastern
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Tetra Tech Short Interest Overview

As of August 31, 2026, Tetra Tech (TTEK) had a short interest of 10.67 million shares sold short, representing 4.19% of the public float. This marks a -0.48% decrease in short interest since the prior report. The short interest ratio (days to cover) is 4.0, meaning it would take 4.0 days of the average trading volume of 3.04 million shares to cover all short positions.

Current Short Interest
10,673,607 shares
Previous Short Interest
10,724,961 shares
Change Vs. Previous Month
-0.48%
Dollar Volume Sold Short
$385.74 million
Short Interest Ratio
4.0 Days to Cover
Last Record Date
August 31, 2026
Outstanding Shares
256,040,000 shares
Short Percent of Float
4.19%
Today's Trading Volume
1,280,890 shares
Average Trading Volume
3,036,717 shares
Today's Volume Vs. Average
42%
Short Selling Tetra Tech?
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

TTEK Short Interest Over Time

TTEK Days to Cover Over Time

TTEK Percentage of Float Shorted Over Time

Tetra Tech Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
8/31/202610,673,607 shares $385.74 million -0.5%4.2%3.98 $36.14
8/14/202610,724,961 shares $391.57 million -9.3%4.2%4.36 $36.51
7/31/202611,827,081 shares $392.19 million -2.7%4.6%3.71 $33.16
7/15/202612,159,832 shares $380.97 million -0.2%4.7%4.64 $31.33
6/30/202612,183,922 shares $351.99 million +11.8%4.7%2.82 $28.89
6/15/202610,902,026 shares $305.26 million -16.7%4.2%2.91 $28.00
5/29/202613,090,177 shares $359.85 million -1.7%5.1%3.91 $27.49
5/15/202613,322,302 shares $348.78 million +4.0%5.2%3.31 $26.18
4/30/202612,814,107 shares $414.15 million +13.7%5.0%4.19 $32.32
4/15/202611,266,565 shares $356.70 million -7.2%4.4%4.75 $31.66
3/31/202612,145,841 shares $365.83 million +9.5%4.7%4 $30.12
3/13/202611,092,876 shares $356.97 million +4.7%4.3%4.99 $32.18
2/27/202610,598,378 shares $379.85 million +17.4%4.1%3.46 $35.84
2/13/20269,026,524 shares $331.18 million +8.9%3.5%2.07 $36.69
1/30/20268,290,831 shares $312.23 million +5.9%3.2%3.46 $37.66
1/15/20267,829,609 shares $291.03 million -3.7%3.0%3.71 $37.17
12/31/20258,130,492 shares $272.70 million -1.4%3.1%5.18 $33.54
12/15/20258,242,674 shares $283.88 million -11.2%3.2%3.84 $34.44
11/28/20259,285,021 shares $322.52 million +8.8%3.6%3.04 $34.74
11/14/20258,534,166 shares $309.02 million +1.6%3.3%2.65 $36.21
10/31/20258,399,141 shares $268.60 million -17.7%3.2%4.18 $31.98
10/15/202510,200,000 shares $331.50 million -14.3%3.9%4.7 $32.50
9/30/202511,900,000 shares $397.22 million +8.5%N/A5.9 $33.38
9/15/202510,970,000 shares $397.55 million +5.6%N/A5.5 $36.24
8/31/202510,390,000 shares $378.40 million -2.4%4.0%5.4 $36.42
8/15/202510,640,000 shares $380.91 million +3.7%N/A5.7 $35.80
7/31/202510,260,000 shares $376.95 million +12.9%3.9%4.9 $36.74
7/15/20259,090,000 shares $333.24 million +211.3%N/A4.5 $36.66
6/30/20252,920,000 shares $105.00 million -71.7%15.1%9.7 $35.96
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
1/15/20254,910,000 shares $205.63 million -4.7%N/A2.2 $41.88
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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 $150.91
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
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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 $149.34

TTEK Short Interest - Frequently Asked Questions

Short interest is the volume of Tetra Tech shares that have been sold short but have not yet been closed out or covered. As of August 31st, traders have sold 10,673,607 shares of TTEK short. 4.19% of Tetra Tech's shares are currently sold short. Learn More on Tetra Tech's current short interest.

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 4.0. Learn More on Tetra Tech's short interest ratio.

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. 4.19% of Tetra Tech's floating shares are currently sold short.

Tetra Tech saw a decline in short interest in August. As of August 31st, there was short interest totaling 10,673,607 shares, a decline of 0.5% from the previous total of 10,724,961 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.

4.19% of Tetra Tech's shares are currently sold short. Here is how the short interest of companies in the sector of "industrials" compare to Tetra Tech: Applied Industrial Technologies, Inc. (2.04%), Donaldson Company, Inc. (2.42%), Rollins, Inc. (3.37%), Clean Harbors, Inc. (2.10%), GFL Environmental Inc. (6.68%), Rentokil Initial PLC (0.51%), Casella Waste Systems, Inc. (7.90%), ABM Industries Incorporated (3.85%), BrightView Holdings, Inc. (4.23%), Enviri Corporation (10.81%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($62.68 billion), Invesco QQQ ($47.06 billion), iShares Russell 2000 ETF ($23.54 billion), SPDR S&P Biotech ETF ($12.10 billion), Nebius Group N.V. ($9.34 billion), Western Digital Corporation ($8.96 billion), Financial Select Sector SPDR Fund ($8.16 billion), iShares 20+ Year Treasury Bond ETF ($7.98 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($7.52 billion), and VanEck Semiconductor ETF ($7.39 billion). View all of the most shorted stocks.

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 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.

A short squeeze for Tetra Tech 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 TTEK, which in turn drives the price of the stock up even further.

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 August, 31 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like TTEK:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


Related Companies
Short Interest Tools

Short interest data for NASDAQ:TTEK is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 9/10/2026. FINRA publishes updated short interest twice a month.
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