'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 FlexShares Global Upstream Natural Resources Index Fund ETF is 57.5%, which is smaller, thus worse compared to the benchmark SPY (58.9%) in the same period.
- Compared with SPY (33.9%) in the period of the last 3 years, the total return, or increase in value of 64.7% is larger, thus better.

'The compound annual growth rate isn't a true return rate, but rather a representational figure. It is essentially a number that describes the rate at which an investment would have grown if it had grown the same rate every year and the profits were reinvested at the end of each year. In reality, this sort of performance is unlikely. However, CAGR can be used to smooth returns so that they may be more easily understood when compared to alternative investments.'

Applying this definition to our asset in some examples:- Compared with the benchmark SPY (9.7%) in the period of the last 5 years, the compounded annual growth rate (CAGR) of 9.5% of FlexShares Global Upstream Natural Resources Index Fund ETF is lower, thus worse.
- During the last 3 years, the annual performance (CAGR) is 18.1%, which is higher, thus better than the value of 10.2% from the benchmark.

'Volatility is a statistical measure of the dispersion of returns for a given security or market index. Volatility can either be measured by using the standard deviation or variance between returns from that same security or market index. Commonly, the higher the volatility, the riskier the security. In the securities markets, volatility is often associated with big swings in either direction. For example, when the stock market rises and falls more than one percent over a sustained period of time, it is called a 'volatile' market.'

Applying this definition to our asset in some examples:- Looking at the volatility of 24.3% in the last 5 years of FlexShares Global Upstream Natural Resources Index Fund ETF, we see it is relatively greater, thus worse in comparison to the benchmark SPY (21.6%)
- During the last 3 years, the 30 days standard deviation is 28.9%, which is larger, thus worse than the value of 25% 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.'

Applying this definition to our asset in some examples:- Looking at the downside deviation of 17.9% in the last 5 years of FlexShares Global Upstream Natural Resources Index Fund ETF, we see it is relatively higher, thus worse in comparison to the benchmark SPY (15.7%)
- Looking at downside volatility in of 21.2% in the period of the last 3 years, we see it is relatively greater, thus worse in comparison to SPY (18.1%).

'The Sharpe ratio was developed by Nobel laureate William F. Sharpe, and is used to help investors understand the return of an investment compared to its risk. The ratio is the average return earned in excess of the risk-free rate per unit of volatility or total risk. Subtracting the risk-free rate from the mean return allows an investor to better isolate the profits associated with risk-taking activities. One intuition of this calculation is that a portfolio engaging in 'zero risk' investments, such as the purchase of U.S. Treasury bills (for which the expected return is the risk-free rate), has a Sharpe ratio of exactly zero. Generally, the greater the value of the Sharpe ratio, the more attractive the risk-adjusted return.'

Which means for our asset as example:- Looking at the risk / return profile (Sharpe) of 0.29 in the last 5 years of FlexShares Global Upstream Natural Resources Index Fund ETF, we see it is relatively lower, thus worse in comparison to the benchmark SPY (0.33)
- Looking at Sharpe Ratio in of 0.54 in the period of the last 3 years, we see it is relatively greater, thus better in comparison to SPY (0.31).

'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:- Looking at the ratio of annual return and downside deviation of 0.39 in the last 5 years of FlexShares Global Upstream Natural Resources Index Fund ETF, we see it is relatively lower, thus worse in comparison to the benchmark SPY (0.46)
- During the last 3 years, the ratio of annual return and downside deviation is 0.73, which is higher, thus better than the value of 0.43 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:- The Downside risk index over 5 years of FlexShares Global Upstream Natural Resources Index Fund ETF is 10 , which is higher, thus worse compared to the benchmark SPY (8.91 ) in the same period.
- During the last 3 years, the Downside risk index is 11 , which is higher, thus worse than the value of 11 from the benchmark.

'Maximum drawdown is defined as the peak-to-trough decline of an investment during a specific period. It is usually quoted as a percentage of the peak value. The maximum drawdown can be calculated based on absolute returns, in order to identify strategies that suffer less during market downturns, such as low-volatility strategies. However, the maximum drawdown can also be calculated based on returns relative to a benchmark index, for identifying strategies that show steady outperformance over time.'

Using this definition on our asset we see for example:- Looking at the maximum drop from peak to valley of -43 days in the last 5 years of FlexShares Global Upstream Natural Resources Index Fund ETF, we see it is relatively lower, thus worse in comparison to the benchmark SPY (-33.7 days)
- During the last 3 years, the maximum drop from peak to valley is -40.3 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). Many assume Max DD Duration is the length of time between new highs during which the Max DD (magnitude) occurred. But that isn’t always the case. The Max DD duration is the longest time between peaks, period. So it could be the time when the program also had its biggest peak to valley loss (and usually is, because the program needs a long time to recover from the largest loss), but it doesn’t have to be'

Which means for our asset as example:- Compared with the benchmark SPY (271 days) in the period of the last 5 years, the maximum time in days below previous high water mark of 402 days of FlexShares Global Upstream Natural Resources Index Fund ETF is higher, thus worse.
- During the last 3 years, the maximum days below previous high is 203 days, which is smaller, thus better than the value of 271 days from the benchmark.

'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.'

Applying this definition to our asset in some examples:- Looking at the average days under water of 115 days in the last 5 years of FlexShares Global Upstream Natural Resources Index Fund ETF, we see it is relatively larger, thus worse in comparison to the benchmark SPY (60 days)
- Compared with SPY (72 days) in the period of the last 3 years, the average days under water of 68 days is lower, thus better.

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 FlexShares Global Upstream Natural Resources Index Fund 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.