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Montrose Environmental Group (ONT) Short Interest Ratio & Short Volume

Montrose Environmental Group logo
$16.54 -0.18 (-1.08%)
As of 09/1/2026 03:58 PM Eastern
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Montrose Environmental Group Short Interest Overview

As of August 14, 2026, Montrose Environmental Group (ONT) had a short interest of 3.30 million shares sold short, representing 10.50% of the public float. This marks a -20.32% decrease in short interest since the prior report. The short interest ratio (days to cover) is 2.9, meaning it would take 2.9 days of the average trading volume of 954,897 shares to cover all short positions.

Current Short Interest
3,303,899 shares
Previous Short Interest
4,146,531 shares
Change Vs. Previous Month
-20.32%
Dollar Volume Sold Short
$58.55 million
Short Interest Ratio
2.9 Days to Cover
Last Record Date
August 14, 2026
Outstanding Shares
35,120,000 shares
Short Percent of Float
10.50%
Today's Trading Volume
356,196 shares
Average Trading Volume
954,897 shares
Today's Volume Vs. Average
37%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

ONT Short Interest Over Time

ONT Days to Cover Over Time

ONT Percentage of Float Shorted Over Time

Montrose Environmental Group 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
8/14/20263,303,899 shares $58.55 million -20.3%10.5%2.93 $17.72
7/31/20264,146,531 shares $87.20 million +2.5%12.8%8.97 $21.03
7/15/20264,044,106 shares $83.19 million +5.3%12.5%8.33 $20.57
6/30/20263,839,609 shares $77.91 million +22.8%11.9%4 $20.29
6/15/20263,127,921 shares $52.21 million +8.9%9.7%5.03 $16.69
5/29/20262,872,114 shares $45.87 million +30.9%8.9%3.6 $15.97
5/15/20262,194,988 shares $33.32 million +3.1%6.8%2.83 $15.18
4/15/20262,258,732 shares $47.92 million -8.9%7.0%9.8 $21.22
3/31/20262,480,401 shares $54.27 million +14.6%7.8%8.27 $21.88
3/13/20262,165,310 shares $53.97 million +1.8%6.8%5.14 $24.93
2/27/20262,127,509 shares $62.16 million +1.6%6.7%3.38 $29.22
2/13/20262,093,800 shares $42.92 million -2.5%6.7%7.02 $20.50
1/30/20262,147,978 shares $47.84 million -3.5%6.8%6.43 $22.27
1/15/20262,225,258 shares $52.67 million -5.4%7.1%7.38 $23.67
12/31/20252,351,756 shares $58.32 million +11.9%7.5%7.89 $24.80
12/15/20252,102,042 shares $56.84 million -0.7%6.7%5.79 $27.04
11/28/20252,117,062 shares $54.25 million +1.6%6.7%6.9 $25.63
11/14/20252,083,736 shares $50.60 million +10.6%6.6%4.43 $24.28
10/31/20251,883,875 shares $48.78 million -4.8%6.0%4.63 $25.89
10/15/20251,980,000 shares $57.36 million -14.3%6.3%4.1 $28.97
9/30/20252,310,000 shares $63.50 million -6.9%N/A5.2 $27.49
9/15/20252,480,000 shares $75.82 million +5.1%N/A5.5 $30.57
8/31/20252,360,000 shares $73.62 million -10.3%7.6%5.4 $31.19
8/15/20252,630,000 shares $73.72 million -19.3%N/A6.1 $28.03
7/31/20253,260,000 shares $73.74 million -0.3%10.5%7.9 $22.62
7/15/20253,270,000 shares $74.48 million +12.0%N/A8.6 $22.78
6/30/20252,920,000 shares $64.01 million +1.7%9.6%6.6 $21.92
6/15/20252,870,000 shares $65.92 million -10.3%9.4%6.3 $22.97
5/31/20253,200,000 shares $62.59 million +2.9%10.6%6.4 $19.56
5/15/20253,110,000 shares $60.15 million -5.8%10.3%5.8 $19.34
4/30/20253,300,000 shares $48.15 million -0.6%N/A6.3 $14.59
4/15/20253,320,000 shares $47.06 million -0.3%11.0%6.3 $14.18
3/31/20253,330,000 shares $47.79 million +4.4%11.0%6 $14.35
3/15/20253,190,000 shares $53.90 million -2.7%10.6%5.9 $16.90
2/28/20253,280,000 shares $63.91 million -1.8%10.9%5.9 $19.49
2/15/20253,340,000 shares $62.94 million +2.8%11.1%6 $18.84
1/31/20253,250,000 shares $67.73 million -4.4%N/A5.1 $20.84
1/15/20253,400,000 shares $76.70 million +7.3%N/A5.3 $22.56
12/31/20243,170,000 shares $58.80 million +17.4%N/A4.7 $18.55
12/15/20242,700,000 shares $44.66 million -2.5%N/A3.7 $16.54
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11/30/20242,770,000 shares $52.13 million -19.9%N/A3.9 $18.82
11/15/20243,460,000 shares $65.32 million +1.5%N/A5.2 $18.88
10/31/20243,410,000 shares $89.96 million +0.3%N/A6 $26.38
10/15/20243,400,000 shares $91.43 million +4.0%N/A5.9 $26.89
9/30/20243,270,000 shares $85.97 million +37.4%N/A5.8 $26.29
9/15/20242,380,000 shares $69.40 million +2.6%N/A5.1 $29.16
8/31/20242,320,000 shares $76.33 million +2.2%N/A5.6 $32.90
8/15/20242,270,000 shares $73.66 million +22.0%N/A5.8 $32.45
7/31/20241,860,000 shares $59.32 million +10.1%N/A4.7 $31.89
7/15/20241,690,000 shares $64.79 million -11.5%N/A4.9 $38.34
6/30/20241,910,000 shares $85.11 million +17.2%N/A6 $44.56
6/15/20241,630,000 shares $78.16 million +14.8%N/A5.5 $47.95
5/31/20241,420,000 shares $66.75 million +42.0%N/A4.6 $47.01
5/15/20241,000,000 shares $47.46 million +21.7%N/A3.3 $47.46
4/30/2024822,000 shares $35.71 million +5.7%N/A2.9 $43.44
4/15/2024777,600 shares $33.19 million -6.7%N/A3.2 $42.68
3/31/2024833,400 shares $32.64 million +9.9%N/A4 $39.17
3/15/2024758,200 shares $28.51 million -0.1%N/A3.8 $37.60
2/29/2024758,700 shares $31.40 million +2.6%N/A3.9 $41.38
2/15/2024739,500 shares $25.43 million +8.9%N/A4.1 $34.39
1/31/2024678,800 shares $19.88 million +7.3%N/A3.3 $29.29
1/15/2024632,600 shares $17.69 million +1.1%N/A2.9 $27.97
12/31/2023625,800 shares $20.11 million +1.2%N/A3.1 $32.13
12/15/2023618,600 shares $19.95 million +12.9%N/A3 $32.25
11/30/2023547,900 shares $17.13 million +3.8%N/A2.5 $31.27
11/15/2023528,000 shares $15.53 million -7.5%N/A2.5 $29.42
10/31/2023570,700 shares $13.19 million +17.0%N/A2.7 $23.11
10/15/2023487,700 shares $12.18 million -5.5%N/A2.4 $24.97
9/30/2023516,200 shares $15.10 million -20.8%N/A2.6 $29.26
9/15/2023651,400 shares $21.42 million +13.2%N/A3.4 $32.88
8/31/2023575,400 shares $22.12 million -6.1%N/A3.3 $38.44
8/15/2023612,500 shares $24.24 million +3.3%N/A3.2 $39.57
7/31/2023592,800 shares $23.99 million -20.7%N/A3.1 $40.47
7/15/2023747,200 shares $33.28 million +18.0%N/A3.9 $44.54
6/30/2023633,000 shares $26.66 million -10.2%N/A3 $42.12
6/15/2023704,800 shares $30.22 million +5.5%N/A3.3 $42.88
5/31/2023668,000 shares $23.44 million +12.7%N/A3 $35.09
5/15/2023592,600 shares $21.65 million -37.7%N/A2.2 $36.54
4/30/2023951,500 shares $28.98 million -2.5%N/A3.8 $30.46
4/15/2023975,400 shares $31.21 million -15.9%3.9%3.9 $32.00
3/31/20231,160,000 shares $41.38 million +0.9%4.7%4.9 $35.67
3/15/20231,150,000 shares $38.46 million -20.7%N/A5.2 $33.44
2/28/20231,450,000 shares $70.60 million +2.8%N/A7.2 $48.69
2/15/20231,410,000 shares $75.24 million -9.6%N/A11 $53.36
1/31/20231,560,000 shares $84.49 million +1.3%N/A11.8 $54.16
1/15/20231,540,000 shares $80.76 million -7.2%N/A11.8 $52.44
12/30/20221,660,000 shares $73.69 million +4.4%N/A13.1 $44.39
12/15/20221,590,000 shares $70.76 million +3.3%N/A12.6 $44.50
11/30/20221,540,000 shares $71.09 million +3.4%N/A11.5 $46.16
11/15/20221,490,000 shares $74.02 million -5.1%N/A11.8 $49.68
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10/31/20221,570,000 shares $68.73 million -1.9%N/A12.5 $43.78
10/15/20221,600,000 shares $54.18 million +3.2%N/A12.9 $33.86
9/30/20221,550,000 shares $52.16 million +8.4%N/A12.6 $33.65
9/15/20221,430,000 shares $63.33 million +0.7%5.5%10.9 $44.29
8/31/20221,420,000 shares $57.10 million +0.7%5.5%10 $40.21
8/15/20221,410,000 shares $65.57 million -10.2%5.5%9.3 $46.50
7/31/20221,570,000 shares $62.99 million -0.6%6.1%9 $40.12
7/15/20221,580,000 shares $54.23 million +4.6%6.1%8.7 $34.32
6/30/20221,510,000 shares $50.98 million No Change5.9%8.3 $33.76
6/15/20221,510,000 shares $46.22 million -6.8%5.9%7.9 $30.61
5/31/20221,620,000 shares $65.63 million -4.1%6.3%9.3 $40.51
5/15/20221,690,000 shares $66.69 million +3.7%6.6%8.3 $39.46
4/30/20221,630,000 shares $73.95 million +18.1%6.3%8.4 $45.37
4/15/20221,380,000 shares $70.63 million No Change5.3%6.8 $51.18
3/31/20221,380,000 shares $73.04 million -10.4%5.4%6.1 $52.93
3/15/20221,540,000 shares $79.03 million +12.4%6.0%6.8 $51.32
2/28/20221,370,000 shares $60.43 million No Change5.4%5.7 $44.11
2/15/20221,370,000 shares $65.49 million +10.5%5.4%6 $47.80
1/31/20221,240,000 shares $56.75 million +17.0%5.2%5.3 $45.77
1/15/20221,060,000 shares $57.51 million -16.5%4.4%4.6 $54.25
12/31/20211,270,000 shares $89.55 million +11.4%5.3%5.7 $70.51
12/15/20211,140,000 shares $79.36 million -5.0%4.7%4.2 $69.61
11/30/20211,200,000 shares $87.88 million -7.7%4.7%4.4 $73.23
11/15/20211,300,000 shares $99.53 million -7.8%5.2%5 $76.56
10/29/20211,410,000 shares $96.66 million +2.9%5.8%5.7 $68.55
10/15/20211,370,000 shares $85.63 million -5.5%5.7%5.8 $62.50
9/30/20211,450,000 shares $89.52 million +27.2%6.0%6.6 $61.74
9/15/20211,140,000 shares $67.84 million +15.1%5.3%6.6 $59.51

ONT Short Interest - Frequently Asked Questions

Short interest is the volume of Montrose Environmental Group shares that have been sold short but have not yet been closed out or covered. As of August 14th, traders have sold 3,303,899 shares of ONT short. 10.50% of Montrose Environmental Group's shares are currently sold short. Learn More on Montrose Environmental Group'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. ONT shares currently have a short interest ratio of 2.9. Learn More on Montrose Environmental Group'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. 10.50% of Montrose Environmental Group's floating shares are currently sold short.

Montrose Environmental Group saw a decrease in short interest during the month of August. As of August 14th, there was short interest totaling 3,303,899 shares, a decrease of 20.3% from the previous total of 4,146,531 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.

10.50% of Montrose Environmental Group's shares are currently sold short. Here is how the short interest of companies in the industry of "commercial services & supplies" compare to Montrose Environmental Group: BrightView Holdings, Inc. (4.53%), Enviri Corporation (10.20%), Perma-Fix Environmental Services, Inc. (14.32%), Waste Management, Inc. (1.53%), Republic Services, Inc. (1.38%), Waste Connections, Inc. (1.47%), Rollins, Inc. (2.92%), Clean Harbors, Inc. (2.22%), GFL Environmental Inc. (6.29%), Rentokil Initial PLC (0.52%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($71.57 billion), Invesco QQQ ($46.97 billion), iShares Russell 2000 ETF ($24.02 billion), Nebius Group N.V. ($15.37 billion), Sandisk Corporation ($12.60 billion), SPDR S&P Biotech ETF ($12.14 billion), Western Digital Corporation ($10.32 billion), iShares 20+ Year Treasury Bond ETF ($8.38 billion), VanEck Semiconductor ETF ($7.62 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($7.07 billion). View all of the most shorted stocks.

Short selling ONT is an investing strategy that aims to generate trading profit from Montrose Environmental Group as its price is falling. ONT shares are trading down $0.18 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 Montrose Environmental Group 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 ONT, 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 ONT, twice per month. The most recent reporting period available is August, 14 2026.

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

  • 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.


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Short Interest Tools

Short interest data for NYSE:ONT is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 8/25/2026. FINRA publishes updated short interest twice a month.
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