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:
  • The total return, or increase in value over 5 years of Yale U's Unconventional Portfolio is 26.5%, which is smaller, thus worse compared to the benchmark SPY (94%) in the same period.
  • Looking at total return in of 9.3% in the period of the last 3 years, we see it is relatively smaller, thus worse in comparison to SPY (44.4%).

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:
  • Looking at the annual performance (CAGR) of 4.8% 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 (14.2%)
  • Compared with SPY (13.1%) in the period of the last 3 years, the compounded annual growth rate (CAGR) of 3% is lower, thus worse.

Volatility:

'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.'

Which means for our asset as example:
  • Looking at the volatility of 14.1% 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 (21%)
  • Compared with SPY (17.2%) in the period of the last 3 years, the volatility of 12.5% is smaller, 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:
  • Compared with the benchmark SPY (15%) in the period of the last 5 years, the downside risk of 10.3% of Yale U's Unconventional Portfolio is smaller, thus better.
  • Compared with SPY (12%) in the period of the last 3 years, the downside volatility of 8.8% is smaller, thus better.

Sharpe:

'The Sharpe ratio (also known as the Sharpe index, the Sharpe measure, and the reward-to-variability ratio) is a way to examine the performance of an investment by adjusting for its risk. The ratio measures the excess return (or risk premium) per unit of deviation in an investment asset or a trading strategy, typically referred to as risk, named after William F. Sharpe.'

Which means for our asset as example:
  • The Sharpe Ratio over 5 years of Yale U's Unconventional Portfolio is 0.16, which is lower, thus worse compared to the benchmark SPY (0.56) in the same period.
  • Looking at Sharpe Ratio in of 0.04 in the period of the last 3 years, we see it is relatively lower, thus worse in comparison to SPY (0.62).

Sortino:

'The Sortino ratio measures the risk-adjusted return of an investment asset, portfolio, or strategy. It is a modification of the Sharpe ratio but penalizes only those returns falling below a user-specified target or required rate of return, while the Sharpe ratio penalizes both upside and downside volatility equally. Though both ratios measure an investment's risk-adjusted return, they do so in significantly different ways that will frequently lead to differing conclusions as to the true nature of the investment's return-generating efficiency. The Sortino ratio is used as a way to compare the risk-adjusted performance of programs with differing risk and return profiles. In general, risk-adjusted returns seek to normalize the risk across programs and then see which has the higher return unit per risk.'

Using this definition on our asset we see for example:
  • Compared with the benchmark SPY (0.78) in the period of the last 5 years, the ratio of annual return and downside deviation of 0.22 of Yale U's Unconventional Portfolio is lower, thus worse.
  • Compared with SPY (0.88) in the period of the last 3 years, the excess return divided by the downside deviation of 0.06 is lower, thus worse.

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.'

Which means for our asset as example:
  • Looking at the Ulcer Ratio of 11 in the last 5 years of Yale U's Unconventional Portfolio, we see it is relatively larger, thus worse in comparison to the benchmark SPY (9.19 )
  • During the last 3 years, the Ulcer Index is 10 , which is greater, thus worse than the value of 8.57 from the benchmark.

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.'

Which means for our asset as example:
  • The maximum drop from peak to valley over 5 years of Yale U's Unconventional Portfolio is -26.2 days, which is larger, thus better compared to the benchmark SPY (-32.8 days) in the same period.
  • Compared with SPY (-22.1 days) in the period of the last 3 years, the maximum drop from peak to valley of -22.4 days is smaller, thus worse.

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:
  • Looking at the maximum days under water of 677 days 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 (488 days)
  • Compared with SPY (325 days) in the period of the last 3 years, the maximum time in days below previous high water mark of 568 days is larger, thus worse.

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.'

Which means for our asset as example:
  • The average days below previous high over 5 years of Yale U's Unconventional Portfolio is 208 days, which is larger, thus worse compared to the benchmark SPY (121 days) in the same period.
  • Looking at average time in days below previous high water mark in of 225 days in the period of the last 3 years, we see it is relatively larger, thus worse in comparison to SPY (89 days).

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.