'Total return is the amount of value an investor earns from a security over a specific period, typically one year, when all distributions are reinvested. Total return is expressed as a percentage of the amount invested. For example, a total return of 20% means the security increased by 20% of its original value due to a price increase, distribution of dividends (if a stock), coupons (if a bond) or capital gains (if a fund). Total return is a strong measure of an investment’s overall performance.'

Which means for our asset as example:- The total return over 5 years of Invesco Global Clean Energy ETF is 106.3%, which is higher, thus better compared to the benchmark SPY (81.5%) in the same period.
- During the last 3 years, the total return is 97.9%, which is greater, thus better than the value of 48.1% from the benchmark.

'Compound annual growth rate (CAGR) is a business and investing specific term for the geometric progression ratio that provides a constant rate of return over the time period. CAGR is not an accounting term, but it is often used to describe some element of the business, for example revenue, units delivered, registered users, etc. CAGR dampens the effect of volatility of periodic returns that can render arithmetic means irrelevant. It is particularly useful to compare growth rates from various data sets of common domain such as revenue growth of companies in the same industry.'

Which means for our asset as example:- Compared with the benchmark SPY (12.7%) in the period of the last 5 years, the compounded annual growth rate (CAGR) of 15.6% of Invesco Global Clean Energy ETF is greater, thus better.
- Compared with SPY (14%) in the period of the last 3 years, the compounded annual growth rate (CAGR) of 25.6% is greater, thus better.

'In finance, volatility (symbol σ) is the degree of variation of a trading price series over time as measured by the standard deviation of logarithmic returns. Historic volatility measures a time series of past market prices. Implied volatility looks forward in time, being derived from the market price of a market-traded derivative (in particular, an option). Commonly, the higher the volatility, the riskier the security.'

Using this definition on our asset we see for example:- Looking at the historical 30 days volatility of 30.1% in the last 5 years of Invesco Global Clean Energy ETF, we see it is relatively larger, thus worse in comparison to the benchmark SPY (20.5%)
- During the last 3 years, the 30 days standard deviation is 35.9%, which is greater, thus worse than the value of 23.8% from the benchmark.

'Downside risk is the financial risk associated with losses. That is, it is the risk of the actual return being below the expected return, or the uncertainty about the magnitude of that difference. Risk measures typically quantify the downside risk, whereas the standard deviation (an example of a deviation risk measure) measures both the upside and downside risk. Specifically, downside risk in our definition is the semi-deviation, that is the standard deviation of all negative returns.'

Using this definition on our asset we see for example:- Looking at the downside volatility of 21.6% in the last 5 years of Invesco Global Clean Energy ETF, we see it is relatively larger, thus worse in comparison to the benchmark SPY (15%)
- Looking at downside risk in of 25.7% in the period of the last 3 years, we see it is relatively larger, thus worse in comparison to SPY (17.3%).

'The Sharpe ratio is the measure of risk-adjusted return of a financial portfolio. Sharpe ratio is a measure of excess portfolio return over the risk-free rate relative to its standard deviation. Normally, the 90-day Treasury bill rate is taken as the proxy for risk-free rate. A portfolio with a higher Sharpe ratio is considered superior relative to its peers. The measure was named after William F Sharpe, a Nobel laureate and professor of finance, emeritus at Stanford University.'

Using this definition on our asset we see for example:- The ratio of return and volatility (Sharpe) over 5 years of Invesco Global Clean Energy ETF is 0.44, which is lower, thus worse compared to the benchmark SPY (0.5) in the same period.
- Looking at ratio of return and volatility (Sharpe) in of 0.64 in the period of the last 3 years, we see it is relatively greater, thus better in comparison to SPY (0.48).

'The Sortino ratio, a variation of the Sharpe ratio only factors in the downside, or negative volatility, rather than the total volatility used in calculating the Sharpe ratio. The theory behind the Sortino variation is that upside volatility is a plus for the investment, and it, therefore, should not be included in the risk calculation. Therefore, the Sortino ratio takes upside volatility out of the equation and uses only the downside standard deviation in its calculation instead of the total standard deviation that is used in calculating the Sharpe ratio.'

Using this definition on our asset we see for example:- The downside risk / excess return profile over 5 years of Invesco Global Clean Energy ETF is 0.61, which is smaller, thus worse compared to the benchmark SPY (0.68) in the same period.
- During the last 3 years, the downside risk / excess return profile is 0.9, which is greater, thus better than the value of 0.66 from the benchmark.

'Ulcer Index is a method for measuring investment risk that addresses the real concerns of investors, unlike the widely used standard deviation of return. UI is a measure of the depth and duration of drawdowns in prices from earlier highs. Using Ulcer Index instead of standard deviation can lead to very different conclusions about investment risk and risk-adjusted return, especially when evaluating strategies that seek to avoid major declines in portfolio value (market timing, dynamic asset allocation, hedge funds, etc.). The Ulcer Index was originally developed in 1987. Since then, it has been widely recognized and adopted by the investment community. According to Nelson Freeburg, editor of Formula Research, Ulcer Index is “perhaps the most fully realized statistical portrait of risk there is.'

Using this definition on our asset we see for example:- Compared with the benchmark SPY (7.13 ) in the period of the last 5 years, the Ulcer Ratio of 21 of Invesco Global Clean Energy ETF is greater, thus worse.
- Looking at Ulcer Index in of 26 in the period of the last 3 years, we see it is relatively higher, thus worse in comparison to SPY (8.25 ).

'A maximum drawdown is the maximum loss from a peak to a trough of a portfolio, before a new peak is attained. Maximum Drawdown is an indicator of downside risk over a specified time period. It can be used both as a stand-alone measure or as an input into other metrics such as 'Return over Maximum Drawdown' and the Calmar Ratio. Maximum Drawdown is expressed in percentage terms.'

Applying this definition to our asset in some examples:- Compared with the benchmark SPY (-33.7 days) in the period of the last 5 years, the maximum drop from peak to valley of -53.3 days of Invesco Global Clean Energy ETF is smaller, thus worse.
- During the last 3 years, the maximum drop from peak to valley is -53.3 days, which is lower, thus worse than the value of -33.7 days from the benchmark.

'The Drawdown Duration is the length of any peak to peak period, or the time between new equity highs. The Max Drawdown Duration is the worst (the maximum/longest) amount of time an investment has seen between peaks (equity highs) in days.'

Applying this definition to our asset in some examples:- The maximum days under water over 5 years of Invesco Global Clean Energy ETF is 472 days, which is higher, thus worse compared to the benchmark SPY (150 days) in the same period.
- Looking at maximum days below previous high in of 389 days in the period of the last 3 years, we see it is relatively greater, thus worse in comparison to SPY (150 days).

'The Drawdown Duration is the length of any peak to peak period, or the time between new equity highs. The Avg Drawdown Duration is the average amount of time an investment has seen between peaks (equity highs), or in other terms the average of time under water of all drawdowns. So in contrast to the Maximum duration it does not measure only one drawdown event but calculates the average of all.'

Using this definition on our asset we see for example:- Looking at the average days under water of 171 days in the last 5 years of Invesco Global Clean Energy ETF, we see it is relatively larger, thus worse in comparison to the benchmark SPY (41 days)
- Looking at average time in days below previous high water mark in of 127 days in the period of the last 3 years, we see it is relatively larger, thus worse in comparison to SPY (36 days).

Historical returns have been extended using synthetic data.
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- Note that yearly returns do not equal the sum of monthly returns due to compounding.
- Performance results of Invesco Global Clean Energy ETF are hypothetical, do not account for slippage, fees or taxes, and are based on backtesting, which has many inherent limitations, some of which are described in our Terms of Use.