Private capital in a portfolio: risk, return, vintage years and diversification

Where do the private capital categories sit on the risk–return ladder?

Investments in private capital vary in risk and return across the corporate capital structure. Private equity is the riskiest and offers the highest expected return. Returns decline step by step down to the safest, most secured form of lending, infrastructure debt. This is the risk–return ladder , and it mirrors public markets: investors are paid more for holding equity than debt, and more for junior than for senior claims.

Private capital categorieshighest expected risk and return at the top

• 1. Private equity Memorize highest risk and return
• 2. Co-investments Memorize
• 3. Mezzanine debt Memorize
• 4. Unitranche debt Memorize
• 5. Senior direct lending Memorize
• 6. Senior real estate debt Memorize
• 7. Infrastructure debt Memorize lowest risk and return

Why can private equity earn more, and what does it risk?

Private equity can offer higher returns than traditional investments for three reasons: it can invest in private companies that public investors cannot reach, it can influence management and operations, and it can use leverage. In exchange, it is riskier than common stock and needs a higher return. The main risks are illiquidity risk (no easy way out), leverage risk (debt magnifies losses as well as gains), concentration in a few holdings, and valuation uncertainty.

Private equity versus traditional investmentshigher expected return for higher risk

• Sources of excess return Use it
  • Access to private companies a different choice set
  • Influence over management and operations greater control
  • Leverage magnifies results
• Risks Use it
  • Illiquidity risk no easy exit
  • Leverage risk debt magnifies losses too
  • Concentration and valuation uncertainty few holdings; subjective marks

Comparing private capital with public stocks and bonds is not always appropriate. A start-up is riskier than an established firm. A company in a declining industry is unlikely to earn a positive return over long periods. And risk in a public portfolio can easily be hedged, while the performance risk of a private investment cannot.

Can you trust reported private equity performance?

Not without adjustment. Private equity return indexes depend on self-reporting and carry survivorship, backfill and other biases, which tend to overstate returns. Before the 2008 to 2009 crisis, private equity firms did not necessarily mark investments to market unless a liquidity event occurred, and even now marks lag because the assets are illiquid. These smoothed returns understate volatility and understate correlation with other investments, so data need adjusting to measure the benefits properly. Many investors expect companies to be valued quarterly or annually, preferably by an independent party.

What is a vintage year, and why diversify across vintages?

Each private equity fund has a vintage year , typically the year it makes its first investment. It lets investors compare a fund with others of the same year. A fund usually runs for 10 to 12 years, in two phases.

Fund life: typically 10 to 12 yearsdated from the vintage year

• Investment period Memorize about the first five years; capital called from the limited partners and invested
• Harvesting period Memorize the remaining years; exits and capital returned to the limited partners

During the investment period , usually about the first five years, capital is drawn from limited partners and invested in companies. The harvesting period is the rest of the fund’s life, when the fund exits investments and returns capital.

Timing matters. A fund that starts in a low-valuation, recovering economy, when risk appetite is low, can ride the recovery. A fund that invests most of its capital in a high-valuation environment just before a downturn or a long contraction is less fortunate. The business cycle at the vintage year also guides strategy: funds that start in an expansion tend to earn excess returns by funding early-stage companies, and funds that start in a contraction tend to earn excess returns with distressed companies.

The fix is vintage diversification : commit to funds across several vintage years. It is a policy for investors, not for funds or for companies that use the capital.

How much diversification does private capital add?

Private capital funds add a moderate diversification benefit to a portfolio of public stocks and bonds. Average correlation with public markets is high: roughly 0.6 to 0.8 for private equity indexes against major public indexes, and a little higher for private debt. Venture capital is the lowest, around 0.65, which is why it offers the most diversification. Skilled manager selection is where most of the extra value lies, as the extra leverage, market and liquidity risks can bring excess returns. Direct lending can also mean a large commitment to one borrower, which adds concentration risk and reduces diversification.

Exam tip When a question mentions low reported correlation, look for smoothing. When it mentions vintage, look for “spread commitments across years”.

Go deeper Private debt, public credit and floating rates

Private debt and public credit share a reference point: both are priced as a spread over a benchmark interest rate. Private loans are usually floating, so their coupons follow the reference rate up and down, which keeps their interest rate risk low. Their main differences from public credit are illiquidity, concentration in a few borrowers and smoothed reported returns. Those features, and the fact that the correlations are high, are why private debt is a moderate rather than a large diversifier.

Go deeper The secondary market for fund stakes

Because a limited partner cannot easily leave a fund, a secondary market exists in which investors buy and sell stakes in funds. It is a possible source of liquidity, usually at a price that reflects the buyer’s view of the remaining value and its need for compensation, so selling early can be costly. The exam asks only that you recognize illiquidity as a core risk of private capital.