Description

David Swensen is manager of Yale University's endowment fund. He has addressed how investors should set up and manage their investments in his book, Unconventional Success: A Fundamental Approach to Personal Investment.

The Swensen portfolio consists of six core asset class allocations:

US equity: 30%

Foreign developed equity: 15%

Emerging market equity: 5%

US REITS: 20%

US Treasury bonds: 15%

US TIPS: 15%

Statistics (YTD)

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

TotalReturn:

'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.'

Applying this definition to our asset in some examples:
  • Looking at the total return, or performance of 41.8% in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively lower, thus worse in comparison to the benchmark SPY (109.8%)
  • Compared with SPY (42.5%) in the period of the last 3 years, the total return, or performance of 16.4% is lower, thus worse.

CAGR:

'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:
  • Looking at the annual performance (CAGR) of 7.3% in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively lower, thus worse in comparison to the benchmark SPY (16%)
  • Looking at annual performance (CAGR) in of 5.2% in the period of the last 3 years, we see it is relatively lower, thus worse in comparison to SPY (12.6%).

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.'

Using this definition on our asset we see for example:
  • Looking at the volatility of 12.1% in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively lower, thus better in comparison to the benchmark SPY (17.9%)
  • Compared with SPY (18.4%) in the period of the last 3 years, the historical 30 days volatility of 12.8% is lower, thus better.

DownVol:

'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:
  • Looking at the downside risk of 8.5% in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively lower, thus better in comparison to the benchmark SPY (12.5%)
  • During the last 3 years, the downside risk is 8.8%, which is lower, thus better than the value of 12.6% 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.'

Which means for our asset as example:
  • Looking at the risk / return profile (Sharpe) of 0.39 in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively lower, thus worse in comparison to the benchmark SPY (0.75)
  • Looking at Sharpe Ratio in of 0.21 in the period of the last 3 years, we see it is relatively smaller, thus worse in comparison to SPY (0.55).

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:
  • Compared with the benchmark SPY (1.08) in the period of the last 5 years, the downside risk / excess return profile of 0.56 of Yale U's Unconventional Portfolio is lower, thus worse.
  • During the last 3 years, the excess return divided by the downside deviation is 0.31, which is lower, thus worse than the value of 0.8 from the benchmark.

Ulcer:

'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.'

Applying this definition to our asset in some examples:
  • Looking at the Downside risk index of 11 in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively higher, thus worse in comparison to the benchmark SPY (8.48 )
  • Looking at Ulcer Index in of 5.33 in the period of the last 3 years, we see it is relatively smaller, thus better in comparison to SPY (5.54 ).

MaxDD:

'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:
  • Looking at the maximum DrawDown of -26.2 days in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively smaller, thus worse in comparison to the benchmark SPY (-24.5 days)
  • During the last 3 years, the maximum DrawDown is -16.2 days, which is larger, thus better than the value of -18.8 days from the benchmark.

MaxDuration:

'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.'

Which means for our asset as example:
  • The maximum time in days below previous high water mark over 5 years of Yale U's Unconventional Portfolio is 677 days, which is larger, thus worse compared to the benchmark SPY (488 days) in the same period.
  • Looking at maximum time in days below previous high water mark in of 333 days in the period of the last 3 years, we see it is relatively higher, thus worse in comparison to SPY (199 days).

AveDuration:

'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:
  • Compared with the benchmark SPY (119 days) in the period of the last 5 years, the average time in days below previous high water mark of 210 days of Yale U's Unconventional Portfolio is larger, thus worse.
  • Compared with SPY (44 days) in the period of the last 3 years, the average days under water of 92 days is larger, thus worse.

Performance (YTD)

Historical returns have been extended using synthetic data.

Allocations ()

Allocations

Returns (%)

  • Note that yearly returns do not equal the sum of monthly returns due to compounding.
  • Performance results of Yale U's Unconventional Portfolio are hypothetical and do not account for slippage, fees or taxes.
  • Results may be based on backtesting, which has many inherent limitations, some of which are described in our Terms of Use.