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 Video: Compound Annual Growth Rate (CAGR) Definition
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| Date |
Open |
High |
Low |
Close |
Volume |
| 01/13/2026 |
$1.58 |
$1.61 |
$1.53 |
$1.55 |
133.20K | | 01/14/2026 |
$1.54 |
$1.56 |
$1.50 |
$1.53 |
137.30K | | 01/15/2026 |
$1.54 |
$1.62 |
$1.52 |
$1.60 |
136.40K | | 01/16/2026 |
$1.62 |
$1.65 |
$1.52 |
$1.54 |
93.60K | | 01/20/2026 |
$1.54 |
$1.59 |
$1.47 |
$1.56 |
210.00K |
|
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| Fuel Tech, Inc. is a technology company, which is engaged in the development, commercialization and application of proprietary technologies for air pollution control, process optimization, water treatment and advanced engineering services. It has two segments: Air Pollution Control technology and FUEL CHEM technology. The Air Pollution Control technology segment includes technologies to reduce oxides of nitrogen (NOx) emissions in flue gas generated by the firing of natural gas or coal from boilers, incinerators, furnaces and other stationary combustion sources. These include NOxOUT and HERT Selective Non-Catalytic Reduction (SNCR) systems, and Selective Catalytic Reduction (SCR) systems. | |
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Fuel Tech (FTEK) has the following price history information. Looking back at FTEK historical stock prices for the last five trading days, on January 13, 2026, FTEK opened at $1.58, traded as high as $1.61 and as low as $1.53, and closed at $1.55. Trading volume was a total of 133.20K shares. On January 14, 2026, FTEK opened at $1.54, traded as high as $1.56 and as low as $1.50, and closed at $1.53. Trading volume was a total of 137.30K shares. On January 15, 2026, FTEK opened at $1.54, traded as high as $1.62 and as low as $1.52, and closed at $1.60. Trading volume was a total of 136.40K shares. On January 16, 2026, FTEK opened at $1.62, traded as high as $1.65 and as low as $1.52, and closed at $1.54. Trading volume was a total of 93.60K shares. On January 20, 2026, FTEK opened at $1.54, traded as high as $1.59 and as low as $1.47, and closed at $1.56. Trading volume was a total of 210.00K shares.
FTEK Historical Stock Prices By Date:
Below, we examine the compound annual growth rate — CAGR for short — of an investment into Fuel Tech shares, starting with a $10,000 purchase of FTEK, and working forward through the historical stock price information to today.
Growth of $10,000.00
Without Dividends Reinvested
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| Start date: |
01/22/2016 |
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| End date: |
01/20/2026 |
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| Start price/share: |
$1.91 |
|
| End price/share: |
$1.56 |
|
| Dividends collected/share: |
$0.00 |
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| Total return: |
-18.32% |
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| Average Annual Total Return: |
-2.00% |
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| Starting investment: |
$10,000.00 |
|
| Ending investment: |
$8,170.28 |
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| Years: |
10.00 |
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|
| Date |
Close |
| 01/13/2026 | $1.55 | | 01/14/2026 | $1.53 | | 01/15/2026 | $1.60 | | 01/16/2026 | $1.54 | | 01/20/2026 | $1.56 |
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