'The total return on a portfolio of investments takes into account not only the capital appreciation on the portfolio, but also the income received on the portfolio. The income typically consists of interest, dividends, and securities lending fees. This contrasts with the price return, which takes into account only the capital gain on an investment.'

Which means for our asset as example:- Looking at the total return, or increase in value of 9.9% in the last 5 years of iShares Short Maturity Bond ETF, we see it is relatively lower, thus worse in comparison to the benchmark SPY (121.2%)
- Looking at total return, or performance in of 6.7% in the period of the last 3 years, we see it is relatively lower, thus worse in comparison to SPY (67.5%).

'The compound annual growth rate (CAGR) is a useful measure of growth over multiple time periods. It can be thought of as the growth rate that gets you from the initial investment value to the ending investment value if you assume that the investment has been compounding over the time period.'

Applying this definition to our asset in some examples:- The compounded annual growth rate (CAGR) over 5 years of iShares Short Maturity Bond ETF is 1.9%, which is lower, thus worse compared to the benchmark SPY (17.2%) in the same period.
- Looking at annual performance (CAGR) in of 2.2% in the period of the last 3 years, we see it is relatively lower, thus worse in comparison to SPY (18.7%).

'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:- Compared with the benchmark SPY (18.7%) in the period of the last 5 years, the 30 days standard deviation of 3.3% of iShares Short Maturity Bond ETF is lower, thus better.
- During the last 3 years, the 30 days standard deviation is 4.2%, which is lower, thus better than the value of 22.5% from the benchmark.

'The downside volatility is similar to the volatility, or standard deviation, but only takes losing/negative periods into account.'

Applying this definition to our asset in some examples:- Compared with the benchmark SPY (13.6%) in the period of the last 5 years, the downside risk of 2.9% of iShares Short Maturity Bond ETF is smaller, thus better.
- Compared with SPY (16.3%) in the period of the last 3 years, the downside deviation of 3.8% is lower, thus better.

'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:- Looking at the ratio of return and volatility (Sharpe) of -0.18 in the last 5 years of iShares Short Maturity Bond ETF, we see it is relatively smaller, thus worse in comparison to the benchmark SPY (0.79)
- During the last 3 years, the ratio of return and volatility (Sharpe) is -0.08, which is smaller, thus worse than the value of 0.72 from the benchmark.

'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.'

Which means for our asset as example:- The downside risk / excess return profile over 5 years of iShares Short Maturity Bond ETF is -0.2, which is smaller, thus worse compared to the benchmark SPY (1.08) in the same period.
- Looking at downside risk / excess return profile in of -0.08 in the period of the last 3 years, we see it is relatively lower, thus worse in comparison to SPY (1).

'The Ulcer Index is a technical indicator that measures downside risk, in terms of both the depth and duration of price declines. The index increases in value as the price moves farther away from a recent high and falls as the price rises to new highs. The indicator is usually calculated over a 14-day period, with the Ulcer Index showing the percentage drawdown a trader can expect from the high over that period. The greater the value of the Ulcer Index, the longer it takes for a stock to get back to the former high.'

Applying this definition to our asset in some examples:- The Downside risk index over 5 years of iShares Short Maturity Bond ETF is 0.66 , which is lower, thus better compared to the benchmark SPY (5.59 ) in the same period.
- During the last 3 years, the Downside risk index is 0.85 , which is lower, thus better than the value of 6.83 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:- Compared with the benchmark SPY (-33.7 days) in the period of the last 5 years, the maximum reduction from previous high of -9.6 days of iShares Short Maturity Bond ETF is larger, thus better.
- During the last 3 years, the maximum DrawDown is -9.6 days, which is higher, thus better 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.'

Which means for our asset as example:- Looking at the maximum time in days below previous high water mark of 97 days in the last 5 years of iShares Short Maturity Bond ETF, we see it is relatively lower, thus better in comparison to the benchmark SPY (139 days)
- During the last 3 years, the maximum time in days below previous high water mark is 97 days, which is smaller, thus better than the value of 139 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.'

Which means for our asset as example:- Compared with the benchmark SPY (33 days) in the period of the last 5 years, the average days under water of 11 days of iShares Short Maturity Bond ETF is lower, thus better.
- Compared with SPY (35 days) in the period of the last 3 years, the average time in days below previous high water mark of 17 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 iShares Short Maturity Bond 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.