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Transdigm Group (TDG) Short Interest Ratio & Short Volume

Transdigm Group logo
$1,117.02 +0.82 (+0.07%)
Closing price 09/25/2026 03:59 PM Eastern
Extended Trading
$1,117.68 +0.65 (+0.06%)
As of 09/25/2026 07:51 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 Massive. Learn more.
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Transdigm Group Short Interest Overview

As of September 15, 2026, Transdigm Group (TDG) had a short interest of 1.07 million shares sold short, representing 1.97% of the public float. This marks a 18.68% increase in short interest since the prior report. The short interest ratio (days to cover) is 3.2, meaning it would take 3.2 days of the average trading volume of 377,701 shares to cover all short positions.

Current Short Interest
1,067,135 shares
Previous Short Interest
899,190 shares
Change Vs. Previous Month
18.68%
Dollar Volume Sold Short
$1.16 billion
Short Interest Ratio
3.2 Days to Cover
Last Record Date
September 15, 2026
Outstanding Shares
55,930,000 shares
Short Percent of Float
1.97%
Today's Trading Volume
222,986 shares
Average Trading Volume
377,701 shares
Today's Volume Vs. Average
59%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

TDG Short Interest Over Time

TDG Days to Cover Over Time

TDG Percentage of Float Shorted Over Time

Transdigm 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
9/15/20261,067,135 shares $1.16 billion +18.7%2.0%3.17 $1,084.80
8/31/2026899,190 shares $1.05 billion +7.6%1.7%2.51 $1,172.23
8/14/2026835,437 shares $1.05 billion -13.2%1.5%1.49 $1,254.46
7/31/2026962,406 shares $1.21 billion -10.3%1.8%2.91 $1,257.90
7/15/20261,073,290 shares $1.32 billion -6.4%2.0%3.23 $1,233.90
6/30/20261,146,271 shares $1.52 billion +1.6%2.1%2.35 $1,326.39
6/15/20261,128,497 shares $1.44 billion +7.7%2.1%3.36 $1,275.52
5/29/20261,048,245 shares $1.32 billion +6.9%1.9%2.38 $1,259.32
5/15/2026980,573 shares $1.13 billion -2.4%1.8%2.46 $1,148.68
4/30/20261,004,138 shares $1.17 billion -3.3%1.9%2.38 $1,161.76
4/15/20261,038,571 shares $1.33 billion -1.0%1.9%3.3 $1,275.97
3/31/20261,048,865 shares $1.22 billion +10.8%1.9%2.2 $1,160.03
3/13/2026946,415 shares $1.15 billion -2.9%1.7%2.83 $1,213.92
2/27/2026974,719 shares $1.27 billion -13.6%1.8%2.94 $1,304.54
2/13/20261,128,706 shares $1.45 billion -9.8%2.1%2.04 $1,286.10
1/30/20261,251,536 shares $1.79 billion +3.7%2.3%3.77 $1,429.40
1/15/20261,207,366 shares $1.73 billion +8.2%2.2%3.51 $1,433.63
12/31/20251,116,160 shares $1.49 billion -7.1%2.1%3.42 $1,330.97
12/15/20251,201,665 shares $1.55 billion -7.0%2.2%4.16 $1,291.79
11/28/20251,292,031 shares $1.76 billion +8.8%2.4%4.25 $1,360.17
11/14/20251,187,974 shares $1.59 billion +4.1%2.2%3.52 $1,339.26
10/31/20251,141,479 shares $1.49 billion +5.5%2.1%4.17 $1,308.16
10/15/20251,080,000 shares $1.34 billion -4.4%2.0%3.1 $1,237.74
9/30/20251,130,000 shares $1.49 billion +7.6%N/A3.4 $1,317.33
9/15/20251,050,000 shares $1.35 billion -1.9%N/A3.1 $1,289.53
8/31/20251,070,000 shares $1.50 billion -4.5%2.0%3.2 $1,400.77
8/15/20251,120,000 shares $1.56 billion No ChangeN/A3.7 $1,388.60
7/31/20251,120,000 shares $1.80 billion -8.9%2.1%3.9 $1,608.96
7/15/20251,230,000 shares $1.94 billion +2.5%N/A4.6 $1,576.61
6/30/20251,200,000 shares $1.83 billion +7.1%2.2%4.1 $1,522.90
6/15/20251,120,000 shares $1.61 billion -1.8%2.1%3.7 $1,437.60
5/31/20251,140,000 shares $1.67 billion -10.9%2.1%3.9 $1,468.19
5/15/20251,280,000 shares $1.80 billion -3.0%2.4%4.3 $1,405.86
4/30/20251,320,000 shares $1.86 billion +10.0%N/A4.5 $1,411.55
4/15/20251,200,000 shares $1.63 billion +4.4%2.2%4.2 $1,360.10
3/31/20251,150,000 shares $1.59 billion -5.7%2.1%4.2 $1,381.36
3/15/20251,220,000 shares $1.64 billion +19.6%2.3%4.6 $1,346.98
2/28/20251,020,000 shares $1.40 billion -8.1%1.9%3.7 $1,368.24
2/15/20251,110,000 shares $1.46 billion No Change2.0%3.9 $1,315.29
1/31/20251,110,000 shares $1.50 billion -0.9%2.0%3.7 $1,352.43
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1/15/20251,120,000 shares $1.45 billion -5.9%2.0%3.9 $1,292.62
12/31/20241,190,000 shares $1.51 billion +34.7%2.2%4.3 $1,267.28
12/15/2024883,800 shares $1.11 billion +3.2%1.6%3.3 $1,259.12
11/30/2024856,800 shares $1.07 billion -1.4%1.6%3.6 $1,252.97
11/15/2024869,000 shares $1.09 billion -2.3%1.6%3.9 $1,254.16
10/31/2024889,000 shares $1.16 billion +9.1%1.6%4.6 $1,301.40
10/15/2024814,600 shares $1.13 billion +6.2%1.5%4.1 $1,390.52
9/30/2024767,400 shares $1.10 billion +4.7%1.4%3.6 $1,427.13
9/15/2024733,300 shares $1.00 billion -2.9%1.3%3.1 $1,367.76
8/31/2024755,100 shares $1.04 billion -13.8%1.4%3.1 $1,373.21
8/15/2024875,500 shares $1.11 billion +11.1%1.6%3.6 $1,272.34
7/31/2024788,200 shares $1.02 billion +6.8%1.4%3.2 $1,294.22
7/15/2024737,800 shares $916.30 million -16.6%1.4%3.1 $1,241.94
6/30/2024884,100 shares $1.13 billion +7.5%1.6%3.9 $1,277.61
6/15/2024822,500 shares $1.06 billion -4.4%1.5%4 $1,294.76
5/31/2024860,700 shares $1.16 billion -18.0%1.6%4.2 $1,343.23
5/15/20241,050,000 shares $1.35 billion No Change1.9%5.1 $1,289.20
4/30/20241,050,000 shares $1.31 billion +1.9%1.9%5 $1,248.15
4/15/20241,030,000 shares $1.24 billion +1.0%1.9%4.9 $1,207.50
3/31/20241,020,000 shares $1.26 billion -8.9%1.9%4.9 $1,231.60
3/15/20241,120,000 shares $1.31 billion -4.3%2.1%5.3 $1,172.20
2/29/20241,170,000 shares $1.38 billion +0.9%2.2%5.5 $1,177.74
2/15/20241,160,000 shares $1.34 billion +2.7%2.1%5.7 $1,158.85
1/31/20241,130,000 shares $1.23 billion +0.9%2.1%5.1 $1,092.68
1/15/20241,120,000 shares $1.16 billion +4.7%2.0%5.1 $1,032.83
12/31/20231,070,000 shares $1.08 billion -7.8%2.0%4.7 $1,011.60
12/15/20231,160,000 shares $1.14 billion +0.9%2.1%5 $985.59
11/30/20231,150,000 shares $1.11 billion -6.5%2.1%4.8 $962.87
11/15/20231,230,000 shares $1.22 billion +6.0%2.2%5.1 $993.70
10/31/20231,160,000 shares $960.58 million -4.9%2.1%5 $828.09
10/15/20231,220,000 shares $1.05 billion +25.3%2.2%5.3 $857.09
9/30/2023973,700 shares $820.96 million +0.9%1.8%4.1 $843.13
9/15/2023965,300 shares $834.75 million +1.7%1.8%4.3 $864.76
8/31/2023949,300 shares $858.02 million -7.8%1.7%4.1 $903.85
8/15/20231,030,000 shares $886.24 million -1.0%1.9%4.1 $860.43
7/31/20231,040,000 shares $935.71 million -1.9%1.9%3.9 $899.72
7/15/20231,060,000 shares $942.08 million -10.2%2.0%4.1 $888.75
6/30/20231,180,000 shares $1.05 billion +10.3%2.2%4.6 $893.49
6/15/20231,070,000 shares $882.39 million -0.9%2.0%4.1 $824.66
5/31/20231,080,000 shares $835.54 million -10.0%2.0%3.9 $773.65
5/15/20231,200,000 shares $969.77 million +4.4%2.2%4.4 $808.14
4/30/20231,150,000 shares $879.75 million -3.4%2.2%3.7 $765.00
4/15/20231,190,000 shares $894.68 million +3.5%2.2%3.8 $751.83
3/31/20231,150,000 shares $847.61 million -1.7%2.2%3.5 $737.05
3/15/20231,170,000 shares $815.64 million -3.3%2.2%3.5 $697.13
2/28/20231,210,000 shares $900.08 million -0.8%2.3%3.7 $743.87
2/15/20231,220,000 shares $937.16 million -3.2%2.3%3.7 $768.16
1/31/20231,260,000 shares $904.37 million -3.8%2.4%4 $717.75
1/15/20231,310,000 shares $895.88 million -1.5%2.5%4.6 $683.88
12/30/20221,330,000 shares $837.43 million -5.7%2.6%4.8 $629.65
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Having $2.5 million saved puts you ahead of most Americans, but how long it lasts depends on the decisions you make with it. Using the 4% rule as a benchmark, that balance could translate to about $100,000 in year one, adjusted upward for inflation each year after. But the 4% rule has potential downsides and may not fit every portfolio. A financial advisor can help size and structure a retirement budget around your income sources, taxes, and goals. SmartAsset's free quiz matches nearly 50,000 people each month with vetted fiduciary advisors.tc pixel

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12/15/20221,410,000 shares $863.13 million -6.0%2.7%5.1 $612.15
11/30/20221,500,000 shares $942.75 million -9.1%2.9%5.5 $628.50
11/15/20221,650,000 shares $1.02 billion -8.8%3.1%6.4 $618.01
10/31/20221,810,000 shares $1.04 billion -3.2%3.4%6.9 $575.76
10/15/20221,870,000 shares $961.70 million +21.4%3.6%7.1 $514.28
9/30/20221,540,000 shares $808.22 million +33.9%2.9%5.9 $524.82
9/15/20221,150,000 shares $675.17 million +9.5%2.2%4.4 $587.10
8/31/20221,050,000 shares $630.41 million No Change2.0%3.7 $600.39
8/15/20221,050,000 shares $710.86 million +6.0%2.0%3.4 $677.01
7/31/2022990,200 shares $616.24 million -6.6%1.9%3 $622.34
7/15/20221,060,000 shares $570.45 million -1.9%2.1%3.1 $538.16
6/30/20221,080,000 shares $579.60 million -3.6%2.1%3.2 $536.67
6/15/20221,120,000 shares $613.52 million -2.6%2.2%3.2 $547.79
5/31/20221,150,000 shares $696.18 million +10.6%2.2%3.4 $605.37
5/15/20221,040,000 shares $586.36 million +12.8%2.0%2.9 $563.81
4/30/2022922,000 shares $548.41 million -19.1%1.8%2.8 $594.81
4/15/20221,140,000 shares $727.87 million -14.9%2.2%3.6 $638.48
3/31/20221,340,000 shares $873.06 million +25.2%2.6%4.2 $651.54
3/15/20221,070,000 shares $691.25 million +1.9%2.1%3.5 $646.03
2/28/20221,050,000 shares $699.92 million +1.9%2.0%3.5 $666.59
2/15/20221,030,000 shares $675.90 million +5.8%2.0%3.2 $656.21
1/31/2022973,600 shares $599.92 million +4.0%1.9%3 $616.19
1/15/2022935,800 shares $603.95 million +13.5%1.8%3 $645.38
12/31/2021824,400 shares $524.55 million +0.7%1.5%2.8 $636.28
12/15/2021818,800 shares $477.02 million -68.1%1.5%2.7 $582.59
11/30/20212,570,000 shares $1.49 billion -0.8%4.8%8.2 $578.05
11/15/20212,590,000 shares $1.69 billion +8.8%4.8%10 $653.74
10/29/20212,380,000 shares $1.48 billion +7.2%4.5%9.9 $623.82
10/15/20212,220,000 shares $1.42 billion +3.7%4.2%9.7 $639.47
9/30/20212,140,000 shares $1.34 billion +2.4%4.0%9.4 $624.57

TDG Short Interest - Frequently Asked Questions

Short interest is the volume of Transdigm Group shares that have been sold short but have not yet been covered or closed out. As of September 15th, traders have sold 1,067,135 shares of TDG short. 1.97% of Transdigm Group's shares are currently sold short. Learn More on Transdigm 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. TDG shares currently have a short interest ratio of 3.2. Learn More on Transdigm 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. 1.97% of Transdigm Group's floating shares are currently sold short.

Transdigm Group saw a increase in short interest in September. As of September 15th, there was short interest totaling 1,067,135 shares, an increase of 18.7% from the previous total of 899,190 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.

1.97% of Transdigm Group's shares are currently sold short. Here is how the short interest of companies in the industry of "aerospace & defense" compare to Transdigm Group: Curtiss-Wright Corporation (2.12%), Heico Corporation (2.50%), RTX Corporation (1.01%), The Boeing Company (1.80%), Lockheed Martin Corporation (1.05%), General Dynamics Corporation (1.01%), Howmet Aerospace Inc. (2.49%), Northrop Grumman Corporation (1.59%), L3Harris Technologies Inc (2.42%), Rocket Lab Corporation (7.93%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($75.21 billion), Invesco QQQ ($46.31 billion), iShares Russell 2000 ETF ($27.98 billion), SPDR S&P Biotech ETF ($11.59 billion), Nebius Group N.V. ($9.70 billion), Canadian Natural Resources Limited ($9.42 billion), iShares 20+ Year Treasury Bond ETF ($8.70 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($8.53 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.79 billion), and Financial Select Sector SPDR Fund ($7.74 billion). View all of the most shorted stocks.

Short selling TDG is an investing strategy that aims to generate trading profit from Transdigm Group as its price is falling. TDG shares are trading up $11.74 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 Transdigm 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 TDG, 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 TDG, twice per month. The most recent reporting period available is September, 15 2026.

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

  • 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:TDG is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 9/24/2026. FINRA publishes updated short interest twice a month.
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