The iPath Series B S&P 500 VIX Mid-Term Futures ETNs (the "ETNs") are designed to provide exposure to the S&P 500 VIX Mid-Term Futures Index Total Return (the "Index"). The ETNs are riskier than ordinary unsecured debt securities and have no principal protection. The ETNs are unsecured debt obligations of the issuer, Barclays Bank PLC, and are not, either directly or indirectly, an obligation of or guaranteed by any third party. Any payment to be made on the ETNs, including any payment at maturity or upon redemption, depends on the ability of Barclays Bank PLC to satisfy its obligations as they come due. An investment in the ETNs involves significant risks, including possible loss of principal and may not be suitable for all investors.

The Index is designed to provide access to equity market volatility through CBOE Volatility Index (the "VIX Index") futures. The Index offers exposure to a daily rolling long position in the fourth, fifth, sixth and seventh month VIX futures contracts and reflects market participants’ views of the future direction of the VIX index at the time of expiration of the VIX futures contracts comprising the Index. Owning the ETNs is not the same as owning interests in the index components included in the Index or a security directly linked to the performance of the Index.

'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.'

Using this definition on our asset we see for example:- The total return, or increase in value over 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN is -33.5%, which is smaller, thus worse compared to the benchmark SPY (100.7%) in the same period.
- Compared with SPY (33.2%) in the period of the last 3 years, the total return of -57.7% is lower, thus worse.

'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.'

Using this definition on our asset we see for example:- The annual return (CAGR) over 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN is -7.8%, which is lower, thus worse compared to the benchmark SPY (15%) in the same period.
- During the last 3 years, the annual return (CAGR) is -24.9%, which is lower, thus worse than the value of 10% from the benchmark.

'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.'

Which means for our asset as example:- The 30 days standard deviation over 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN is 35.1%, which is larger, thus worse compared to the benchmark SPY (20.9%) in the same period.
- During the last 3 years, the volatility is 27.4%, which is higher, thus worse than the value of 17.3% 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 volatility of 21.1% in the last 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN, we see it is relatively greater, thus worse in comparison to the benchmark SPY (15%)
- Compared with SPY (12%) in the period of the last 3 years, the downside risk of 18.5% is larger, thus worse.

'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 risk / return profile (Sharpe) of -0.29 in the last 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN, we see it is relatively lower, thus worse in comparison to the benchmark SPY (0.6)
- Compared with SPY (0.44) in the period of the last 3 years, the ratio of return and volatility (Sharpe) of -1 is lower, thus worse.

'The Sortino ratio improves upon the Sharpe ratio by isolating downside volatility from total volatility by dividing excess return by the downside deviation. The Sortino ratio is a variation of the Sharpe ratio that differentiates harmful volatility from total overall volatility by using the asset's standard deviation of negative asset returns, called downside deviation. The Sortino ratio takes the asset's return and subtracts the risk-free rate, and then divides that amount by the asset's downside deviation. The ratio was named after Frank A. Sortino.'

Using this definition on our asset we see for example:- The downside risk / excess return profile over 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN is -0.49, which is smaller, thus worse compared to the benchmark SPY (0.83) in the same period.
- Compared with SPY (0.62) in the period of the last 3 years, the ratio of annual return and downside deviation of -1.49 is smaller, thus worse.

'The ulcer index is a stock market risk measure or technical analysis indicator devised by Peter Martin in 1987, and published by him and Byron McCann in their 1989 book The Investors Guide to Fidelity Funds. It's designed as a measure of volatility, but only volatility in the downward direction, i.e. the amount of drawdown or retracement occurring over a period. Other volatility measures like standard deviation treat up and down movement equally, but a trader doesn't mind upward movement, it's the downside that causes stress and stomach ulcers that the index's name suggests.'

Which means for our asset as example:- The Downside risk index over 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN is 35 , which is larger, thus worse compared to the benchmark SPY (9.32 ) in the same period.
- Compared with SPY (10 ) in the period of the last 3 years, the Ulcer Ratio of 32 is larger, thus worse.

'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.'

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 -68.7 days of iPath Series B S&P 500 VIX Mid-Term Futures ETN is smaller, thus worse.
- Compared with SPY (-24.5 days) in the period of the last 3 years, the maximum DrawDown of -61.7 days is lower, thus worse.

'The Maximum Drawdown Duration is an extension of the Maximum Drawdown. However, this metric does not explain the drawdown in dollars or percentages, rather in days, weeks, or months. It is the length of time the account was in the Max Drawdown. A Max Drawdown measures a retrenchment from when an equity curve reaches a new high. It’s the maximum an account lost during that retrenchment. This method is applied because a valley can’t be measured until a new high occurs. Once the new high is reached, the percentage change from the old high to the bottom of the largest trough is recorded.'

Applying this definition to our asset in some examples:- The maximum time in days below previous high water mark over 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN is 1049 days, which is larger, thus worse compared to the benchmark SPY (488 days) in the same period.
- Compared with SPY (488 days) in the period of the last 3 years, the maximum days under water of 485 days is smaller, thus better.

'The Average Drawdown Duration is an extension of the Maximum Drawdown. However, this metric does not explain the drawdown in dollars or percentages, rather in days, weeks, or months. 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:- The average days below previous high over 5 years of iPath Series B S&P 500 VIX Mid-Term Futures ETN is 450 days, which is larger, thus worse compared to the benchmark SPY (123 days) in the same period.
- Compared with SPY (180 days) in the period of the last 3 years, the average time in days below previous high water mark of 186 days is greater, thus worse.

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 iPath Series B S&P 500 VIX Mid-Term Futures ETN are hypothetical and do not account for slippage, fees or taxes.