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Fuel Tech (FTEK) Short Interest Ratio & Short Volume

Fuel Tech logo
$1.45 -0.03 (-1.69%)
Closing price 05/18/2026 04:00 PM Eastern
Extended Trading
$1.46 +0.02 (+1.03%)
As of 03:59 AM 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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Fuel Tech Short Interest Overview

As of April 30, 2026, Fuel Tech (FTEK) had a short interest of 113,924 shares sold short, representing 0.41% of the public float. This marks a 5.20% increase in short interest since the prior report. The short interest ratio (days to cover) is 0.4, meaning it would take 0.4 days of the average trading volume of 280,337 shares to cover all short positions.

Current Short Interest
113,924 shares
Previous Short Interest
108,297 shares
Change Vs. Previous Month
5.20%
Dollar Volume Sold Short
$178.86 thousand
Short Interest Ratio
0.4 Days to Cover
Last Record Date
April 30, 2026
Outstanding Shares
31,170,000 shares
Short Percent of Float
0.41%
Today's Trading Volume
93,399 shares
Average Trading Volume
280,337 shares
Today's Volume Vs. Average
33%
Short Selling Fuel Tech?
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

FTEK Short Interest Over Time

FTEK Days to Cover Over Time

FTEK Percentage of Float Shorted Over Time

Fuel 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
4/30/2026113,924 shares $178.86 thousand +5.2%0.4%0.4 $1.57
4/15/2026108,297 shares $149.45 thousand +9.1%0.4%0.82 $1.38
3/31/202699,227 shares $121.06 thousand -1.2%0.4%0.98 $1.22
3/13/2026100,439 shares $125.55 thousand +13.1%0.4%0.3 $1.25
2/27/202688,780 shares $126.07 thousand -3.7%0.3%0.62 $1.42
2/13/202692,216 shares $116.19 thousand -3.1%0.3%0.58 $1.26
1/30/202695,170 shares $129.43 thousand -44.1%0.3%0.55 $1.36
1/15/2026170,284 shares $272.45 thousand -39.9%0.6%1.24 $1.60
12/31/2025283,130 shares $441.68 thousand -20.1%1.0%1.32 $1.56
12/15/2025354,545 shares $595.64 thousand -5.0%1.3%3.44 $1.68
11/28/2025373,038 shares $677.06 thousand -11.4%1.3%2.09 $1.82
11/14/2025421,181 shares $774.97 thousand -28.1%1.5%1.19 $1.84
10/31/2025586,026 shares $1.45 million -9.8%2.1%3.2 $2.48
10/15/2025649,700 shares $2.03 million -9.1%2.7%2 $3.12
9/30/2025714,700 shares $2.14 million +7.9%3.0%2 $3.00
9/15/2025662,600 shares $2.35 million -6.4%2.8%1.5 $3.55
8/31/2025707,500 shares $2.07 million -8.5%3.0%1.7 $2.92
8/15/2025773,200 shares $2.21 million -1.8%3.2%1.8 $2.86
7/31/2025787,700 shares $2.09 million +19.8%3.3%1.6 $2.65
7/15/2025657,500 shares $1.63 million +20.7%2.8%1.7 $2.48
6/30/2025544,800 shares $1.37 million +658.8%2.3%1.6 $2.52
6/15/202571,800 shares $131.39 thousand -19.7%0.3%0.3 $1.83
5/31/202589,400 shares $150.19 thousand -19.5%0.4%0.5 $1.68
5/15/2025111,000 shares $119.33 thousand +18.1%0.5%0.7 $1.08
4/30/202594,000 shares $90.33 thousand +6.7%0.4%1.3 $0.96
4/15/202588,100 shares $86.11 thousand +10.3%0.4%1.1 $0.98
3/31/202579,900 shares $83.90 thousand +20.3%0.3%0.8 $1.05
3/15/202566,400 shares $65.07 thousand -10.0%0.3%0.6 $0.98
2/28/202573,800 shares $73.06 thousand -11.7%0.3%0.6 $0.99
2/15/202583,600 shares $77.33 thousand -16.3%0.4%0.6 $0.93
1/31/202599,900 shares $98.40 thousand -23.5%0.4%0.7 $0.99
1/15/2025130,500 shares $129.47 thousand -8.1%0.6%0.9 $0.99
12/31/2024142,000 shares $149.10 thousand +127.9%0.6%1.2 $1.05
12/15/202462,300 shares $63.55 thousand -4.0%0.3%0.6 $1.02
11/30/202464,900 shares $69.44 thousand -33.4%0.3%0.6 $1.07
11/15/202497,500 shares $100.43 thousand -43.0%0.4%0.9 $1.03
10/31/2024170,900 shares $176.03 thousand -11.3%0.7%2.2 $1.03
10/15/2024192,600 shares $194.53 thousand -4.6%0.8%2.3 $1.01
9/30/2024201,800 shares $211.89 thousand -22.6%0.9%2.5 $1.05
9/15/2024260,600 shares $260.60 thousand -17.8%1.1%3.4 $1.00
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8/31/2024317,100 shares $317.10 thousand +3.2%1.3%4.2 $1.00
8/15/2024307,400 shares $304.51 thousand +1.7%1.3%4.4 $0.99
7/31/2024302,400 shares $311.50 thousand -1.5%1.3%4.6 $1.03
7/15/2024307,000 shares $325.42 thousand +12.5%1.3%5.2 $1.06
6/30/2024273,000 shares $292.11 thousand +0.3%1.2%4.6 $1.07
6/15/2024272,300 shares $284.55 thousand -1.1%1.2%4.4 $1.05
5/31/2024275,400 shares $308.45 thousand -10.8%1.2%3.6 $1.12
5/15/2024308,900 shares $376.86 thousand -17.1%1.3%3.9 $1.22
4/30/2024372,400 shares $472.95 thousand -2.5%1.6%4.9 $1.27
4/15/2024381,800 shares $435.25 thousand -8.0%1.6%5.1 $1.14
3/31/2024415,100 shares $502.27 thousand -1.5%1.8%5.6 $1.21
3/15/2024421,300 shares $484.50 thousand +21.1%1.8%5.6 $1.15
2/29/2024348,000 shares $379.32 thousand -11.1%1.5%6.2 $1.09
2/15/2024391,300 shares $444.13 thousand -19.7%1.7%7.3 $1.14
1/31/2024487,500 shares $521.63 thousand +10.6%2.1%8.9 $1.07
1/15/2024440,900 shares $454.13 thousand -3.3%1.9%9.1 $1.03
12/31/2023455,800 shares $478.59 thousand -8.2%1.9%9.3 $1.05
12/15/2023496,500 shares $521.33 thousand +11.4%2.1%9 $1.05
11/30/2023445,800 shares $472.55 thousand -9.1%1.9%8.1 $1.06
11/15/2023490,200 shares $524.51 thousand +9.1%2.1%9.1 $1.07
10/31/2023449,300 shares $458.24 thousand No Change1.9%7.2 $1.02
10/15/2023449,300 shares $498.72 thousand -1.1%1.9%7.2 $1.11
9/30/2023454,400 shares $536.19 thousand -11.2%1.9%7.3 $1.18
9/15/2023511,400 shares $598.34 thousand +2.7%2.2%9.2 $1.17
8/31/2023498,200 shares $543.04 thousand -1.3%2.1%8.7 $1.09
8/15/2023504,600 shares $575.24 thousand -0.4%2.1%8 $1.14
7/31/2023506,600 shares $643.38 thousand +0.6%2.2%7.8 $1.27
7/15/2023503,400 shares $639.32 thousand +8.7%2.1%2.1 $1.27
6/30/2023463,300 shares $613.87 thousand -7.7%2.0%2 $1.33
6/15/2023501,800 shares $687.47 thousand +3.7%2.1%2.1 $1.37
5/31/2023484,000 shares $658.24 thousand -10.7%2.1%2.1 $1.36
5/15/2023542,200 shares $699.44 thousand -13.1%2.3%2.3 $1.29
4/30/2023624,000 shares $780 thousand +16.7%2.7%2.7 $1.25
4/15/2023534,500 shares $656.85 thousand +0.2%2.3%2.9 $1.23
3/31/2023533,600 shares $683.01 thousand +10.3%2.3%9.1 $1.28
3/15/2023483,600 shares $589.99 thousand -10.2%2.1%6.2 $1.22
2/28/2023538,500 shares $721.59 thousand -0.6%2.3%6 $1.34
2/15/2023541,600 shares $769.07 thousand -7.0%2.0%6.5 $1.42
1/31/2023582,100 shares $919.72 thousand -0.1%2.1%6.7 $1.58
1/15/2023582,600 shares $990.42 thousand -2.2%2.1%6.9 $1.70
12/30/2022595,400 shares $759.14 thousand +3.6%2.2%7.8 $1.28
12/15/2022574,600 shares $861.90 thousand +0.7%2.1%9.3 $1.50
11/30/2022570,500 shares $707.42 thousand -1.0%2.1%9.7 $1.24
11/15/2022576,200 shares $760.58 thousand -3.2%2.1%11.1 $1.32
10/31/2022595,100 shares $696.27 thousand -5.4%2.2%9.7 $1.17
10/15/2022629,100 shares $729.76 thousand -7.7%2.3%8.5 $1.16
9/30/2022681,700 shares $797.59 thousand +5.7%2.5%9 $1.17
9/15/2022645,100 shares $896.69 thousand -7.8%2.8%7 $1.39
8/31/2022699,600 shares $986.44 thousand +27.6%3.0%7.4 $1.41
8/15/2022548,400 shares $762.28 thousand -13.1%2.4%5.8 $1.39
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7/31/2022630,900 shares $820.17 thousand -11.1%2.7%6.8 $1.30
7/15/2022709,900 shares $858.98 thousand -6.5%3.1%8 $1.21
6/30/2022759,000 shares $941.16 thousand +9.6%3.3%7.8 $1.24
6/15/2022692,500 shares $886.40 thousand -19.1%3.0%6.4 $1.28
5/31/2022856,200 shares $1.10 million -13.0%3.7%6.3 $1.29
5/15/2022984,400 shares $1.19 million +1.7%4.2%6.1 $1.21
4/30/2022968,000 shares $1.25 million -8.7%4.2%5.8 $1.29
4/15/20221,060,000 shares $1.54 million -17.8%4.6%5.8 $1.45
3/31/20221,290,000 shares $1.87 million +22.9%N/A6.5 $1.45
3/15/20221,050,000 shares $1.42 million -7.1%4.5%4.3 $1.35
2/28/20221,130,000 shares $1.41 million +24.8%4.9%4.3 $1.25
2/15/2022905,600 shares $1.15 million +6.4%3.9%3.1 $1.27
1/31/2022851,000 shares $1.01 million -26.0%3.7%1.9 $1.19
1/15/20221,150,000 shares $1.54 million -3.4%N/A2 $1.34
12/31/20211,190,000 shares $1.67 million -17.9%5.1%0.9 $1.40
12/15/20211,450,000 shares $2.13 million +38.1%6.2%1 $1.47
11/30/20211,050,000 shares $1.72 million -45.0%4.5%0.7 $1.64
11/15/20211,910,000 shares $4.09 million +3.8%8.2%1.3 $2.14
10/29/20211,840,000 shares $3.79 million +134.2%7.9%1.4 $2.06
10/15/2021785,700 shares $1.35 million -15.1%3.4%0.6 $1.72
9/30/2021925,500 shares $1.61 million -11.0%4.0%1.9 $1.74
9/15/20211,040,000 shares $1.86 million +4.0%4.5%2.2 $1.79
8/31/20211,000,000 shares $1.87 million -20.0%4.3%1.9 $1.87
8/13/20211,250,000 shares $2.29 million -2.3%5.4%1.5 $1.83
7/30/20211,280,000 shares $2.48 million -3.8%5.5%0.8 $1.94
7/15/20211,330,000 shares $2.62 million -3.6%5.7%0.9 $1.97
6/30/20211,380,000 shares $3.24 million +32.7%5.9%0.9 $2.35
6/15/20211,040,000 shares $2.44 million +205.3%4.5%0.7 $2.35
5/28/2021340,600 shares $711.85 thousand -30.6%1.5%0.2 $2.09

FTEK Short Interest - Frequently Asked Questions

Short interest is the volume of Fuel Tech shares that have been sold short but have not yet been covered or closed out. As of April 30th, traders have sold 113,924 shares of FTEK short. 0.41% of Fuel Tech's shares are currently sold short. Learn More on Fuel 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. FTEK shares currently have a short interest ratio of 0.4. Learn More on Fuel 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. 0.41% of Fuel Tech's floating shares are currently sold short.

Fuel Tech saw a increase in short interest during the month of April. As of April 30th, there was short interest totaling 113,924 shares, an increase of 5.2% from the previous total of 108,297 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.

0.41% of Fuel Tech's shares are currently sold short. Here is how the short interest of companies in the industry of "machinery" compare to Fuel Tech: OMS Energy Technologies Inc. (0.01%), Taylor Devices, Inc. (1.82%), Drilling Tools International Corp. (0.38%), Leishen Energy Holding Co., Ltd. (0.04%), Sono-Tek Corporation (0.03%), Planet Image International Limited (0.15%), CVD Equipment Corporation (0.63%), ZOOZ Power Ltd. (0.15%), INLIF Limited (0.20%), Westport Fuel Systems Inc. (4.35%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($86.09 billion), Invesco QQQ ($39.89 billion), iShares Russell 2000 ETF ($26.13 billion), Western Digital Corporation ($12.66 billion), Salesforce Inc. ($12.29 billion), Sandisk Corporation ($11.87 billion), SPDR S&P Biotech ETF ($9.82 billion), Lumentum Holdings Inc. ($8.51 billion), iShares 20+ Year Treasury Bond ETF ($7.76 billion), and Bloom Energy Corporation ($7.40 billion). View all of the most shorted stocks.

Short selling FTEK is an investing strategy that aims to generate trading profit from Fuel Tech as its price is falling. FTEK shares are trading down $0.03 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 Fuel 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 FTEK, 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 FTEK, twice per month. The most recent reporting period available is April, 30 2026.

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

  • 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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This page (NASDAQ:FTEK) was last updated on 5/19/2026 by MarketBeat.com Staff.
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