Description

Western Digital Corporation develops, manufactures, and sells data storage devices and solutions. It offers client devices, including hard disk drives (HDDs) and solid state drives (SSDs) for computing devices, such as desktop and notebook personal computers (PCs), smart video systems, gaming consoles, and set top boxes; flash-based embedded storage products for mobile phones, tablets, notebook PCs, and other portable and wearable devices, as well as automotive, Internet of Things, industrial, and connected home applications; flash-based memory wafers; and embedded storage solutions and flash products. The company also provides data center devices and solutions comprising enterprise helium hard drives; enterprise SSDs consisting of flash-based SSDs and software solutions for use in enterprise servers, online transactions, data analysis, and other enterprise applications; data center solutions, including HDDs and drive configurations for use in data storage systems and tiered storage models; and data storage platforms and systems. In addition, it offers client solutions, such as external HDD storage products in mobile and desktop form; client SSDs; removable cards that are used in consumer devices comprising mobile phones, tablets, imaging systems, and still and action video cameras; universal serial bus flash drives for use in the computing and consumer markets; and wireless drive products used in-field back up of created content, as well as wireless streaming of high-definition movies, photos, music, and documents to tablets, smartphones, and PCs. The company sells its products under the G-Technology, SanDisk, and WD brands to original equipment manufacturers, distributors, resellers, and retailers. It operates in the United States, China, Hong Kong, Europe, the Middle East, Africa, rest of Asia, and internationally. Western Digital Corporation was founded in 1970 and is headquartered in San Jose, California.

Statistics (YTD)

What do these metrics mean? [Read More] [Hide]

TotalReturn:

'Total return, when measuring performance, is the actual rate of return of an investment or a pool of investments over a given evaluation period. Total return includes interest, capital gains, dividends and distributions realized over a given period of time. Total return accounts for two categories of return: income including interest paid by fixed-income investments, distributions or dividends and capital appreciation, representing the change in the market price of an asset.'

Which means for our asset as example:
  • Compared with the benchmark SPY (129.1%) in the period of the last 5 years, the total return, or increase in value of 13.6% of Western Digital is lower, thus worse.
  • During the last 3 years, the total return, or performance is 8.6%, which is lower, thus worse than the value of 71.3% from the benchmark.

CAGR:

'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:
  • Compared with the benchmark SPY (18.1%) in the period of the last 5 years, the annual performance (CAGR) of 2.6% of Western Digital is lower, thus worse.
  • During the last 3 years, the annual performance (CAGR) is 2.8%, which is lower, thus worse than the value of 19.7% from the benchmark.

Volatility:

'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.'

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 47.5% of Western Digital is higher, thus worse.
  • Looking at 30 days standard deviation in of 55.8% in the period of the last 3 years, we see it is relatively larger, thus worse in comparison to SPY (22.5%).

DownVol:

'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:
  • The downside volatility over 5 years of Western Digital is 34.6%, which is higher, thus worse compared to the benchmark SPY (13.6%) in the same period.
  • During the last 3 years, the downside volatility is 40.6%, which is greater, thus worse than the value of 16.3% from the benchmark.

Sharpe:

'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.'

Applying this definition to our asset in some examples:
  • Looking at the Sharpe Ratio of 0 in the last 5 years of Western Digital, we see it is relatively lower, thus worse in comparison to the benchmark SPY (0.83)
  • Compared with SPY (0.76) in the period of the last 3 years, the risk / return profile (Sharpe) of 0.01 is smaller, thus worse.

Sortino:

'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.'

Which means for our asset as example:
  • The excess return divided by the downside deviation over 5 years of Western Digital is 0, which is lower, thus worse compared to the benchmark SPY (1.15) in the same period.
  • During the last 3 years, the ratio of annual return and downside deviation is 0.01, which is smaller, thus worse than the value of 1.05 from the benchmark.

Ulcer:

'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.'

Which means for our asset as example:
  • Compared with the benchmark SPY (5.59 ) in the period of the last 5 years, the Ulcer Ratio of 39 of Western Digital is greater, thus worse.
  • Looking at Ulcer Ratio in of 26 in the period of the last 3 years, we see it is relatively larger, thus worse in comparison to SPY (6.38 ).

MaxDD:

'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.'

Applying this definition to our asset in some examples:
  • The maximum reduction from previous high over 5 years of Western Digital is -70.5 days, which is lower, thus worse compared to the benchmark SPY (-33.7 days) in the same period.
  • During the last 3 years, the maximum reduction from previous high is -58.8 days, which is lower, thus worse than the value of -33.7 days from the benchmark.

MaxDuration:

'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.'

Using this definition on our asset we see for example:
  • Compared with the benchmark SPY (139 days) in the period of the last 5 years, the maximum days under water of 903 days of Western Digital is larger, thus worse.
  • Looking at maximum days under water in of 273 days in the period of the last 3 years, we see it is relatively higher, thus worse in comparison to SPY (119 days).

AveDuration:

'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.'

Applying this definition to our asset in some examples:
  • The average days below previous high over 5 years of Western Digital is 348 days, which is greater, thus worse compared to the benchmark SPY (32 days) in the same period.
  • Compared with SPY (25 days) in the period of the last 3 years, the average days under water of 76 days is higher, thus worse.

Performance (YTD)

Historical returns have been extended using synthetic data.

Allocations
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Allocations

Returns (%)

  • Note that yearly returns do not equal the sum of monthly returns due to compounding.
  • Performance results of Western Digital 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.