The J-curve narrative in personal fairness (PE) investments has accompanied the expansion of personal markets as much as the current. That narrative deserves a quiet obsolescence.
Right here’s why.
The J-Curve
Non-public market funds have a tendency to not be invested all up entrance. Moderately traders contractually agree to produce the required capital to the funding supervisor, over time and upon request, to finance the acquisitions that compose the funding portfolio. Portfolio investments will not be bought off abruptly both however are divested over time, with the associated money proceeds then returned to traders.
The J-curve describes both a PE fund’s progressive efficiency, as measured by the inner fee of return (IRR), or the associated internet money place of the investor. Whereas it’s certainly a perform of how a PE fund makes use of money over time, the J-curve is extra usually related to the IRR narrative. By pointing to higher future outcomes, the J-curve’s story helps mitigate the often disagreeable impact of the IRR’s preliminary downward plunge — associated to the excessive relative weight, within the IRR calculation, of the bills and charges incurred earlier in a PE fund’s lifecycle.
The S-Curve
However the J-curve narrative has all the time simplified an underlying sigmoid sample: an S-curve.
How does the S-curve evolve the J-curve idea? By modeling the influence of reducing marginal returns relative to the self-liquidating nature of personal market transactions. Of their varied iterations, J-curves don’t correctly describe time’s affect on money flows. Time has a monetary value that makes the extra distant distributions progressively much less related and results in marginally reducing returns.
And not using a sigmoid correction, the J-curve could counsel that “endurance” will result in more cash or larger returns and that the IRR reinvestment assumption will maintain true.
To know and handle the S-curve requires a duration-based and time-weighted efficiency calculation technique. Period marks the place the J turns into an S and gives the interpretative and predictive shift that sharpens the pricing and danger administration perspective.
S-Curve, So What?
Traders need to higher perceive the danger and return outlook of their personal market allocations. They need to know the way it compares to these of different asset lessons. Additionally they must measure and handle their personal market pacing and overcommitment technique.
Ex submit closet-indexing comparisons have restricted sensible software. Gauging the S-curves, nevertheless, yields actionable and quantifiable insights by way of each benchmarking and returns.
The portfolio administration prospects of personal market investments are extra complicated than these of extra liquid asset lessons. Fairness portfolios, for instance, may be effectively constructed and are simpler to rebalance. They get rid of the personal markets’ funding and reinvestment danger in addition to their goal allocation challenges.
The J-curve narrative assumes annualized and chained IRRs, as do most present PE indices and metrics. Furthermore, the time-weighted fee of returns (TWRs) computed utilizing modified Dietz strategies are actually simply proxies for the IRR. They ship deceptive efficiency data. Neglecting the de-risking impact of distributions is like attributing a price of Beta=1 to non-reinvested S&P 500 dividends: It biases the portfolio danger data.
To visualise the distinction, the steeper line within the following graphic reveals the return outlook of the money-weighted metrics at the moment in use. The extra conservative line displays the true common greenback creation over time by counting on S-curve and time-weighted duration-adjusted return on capital (DARC) data.
Competing Curves: The S-Curve vs. the J-Curve in Non-public Fairness

The J-curve line represents capital progress if IRR returns have been relevant to the entire dedication and reinvestment was on the spot. That requires a liquid market and pretty valued NAVs buying and selling at par. The S-curve, however, fashions the true greenback creation of the personal fund portfolio: It places the IRR within the context of time in a practical funding pacing and overcommitment framework.
The underlying thesis is supported by information. The long-term median IRR is 13.3%, in line with McKinsey & Firm, for instance, however US pension funds reported long-term PE returns of 9.3%: A practical steady-state overcommitment technique of 1.4x could be broadly confirmed by the 1.5x since-inception internet a number of earned by a big international PE investor.1
After all, the efficiency numbers aren’t the entire story. Non-public market investing is about greater than outperformance. The danger-adjusted contribution is equally important. That may solely be estimated with S-curves and DARC-weighted returns.
That’s why incorporating the de-risking impact of durations — the place the S-curves twist — is vital to each correct benchmarking and efficient portfolio administration.
1. A 1.5x a number of and a associated 13.3% IRR indicate a internet length of over 3.2 years, approximated by utilizing the formulation linking TVPI and IRR: DUR=ln (A number of)/ ln (1+IRR). As the web length is ahead (i.e., it doesn’t begin at time zero), a fairly normal three-year ramping up part pushes the full length to six.2 years. In a simplified calculation, the 1.5x a number of is equal to the annualized 6.6% DARC return since inception (i.e., 1.5^(1/6.2)-1= 6.6%) and in flip to a 9.3% time-weighted return on the regular state invested capital, which requires a 1.4x overcommitment (i.e., solely 71% of the dedication is often invested, therefore the DARC return of the fund is “leveraged” to compute the return of the invested capital, 6.6%/0.71=9.3%).
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Picture credit score: ©Getty Pictures / Images by R A Kearton
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