He Studied 100 Years of Bubbles. He Exposed Private Equity's Volatility Illusion | The Weekly Wrap

Volatility predicts long-term outcomes

Asness argues that securities with higher short-term volatility generally exhibit wider dispersion of five- and ten-year returns, making it a practical tool for portfolio construction despite its imperfections.

Private equity conceals true risk

Private equity appears less volatile than public markets (5% vs. 17% annually) only because prices aren't marked to market daily, creating a dangerous illusion of safety while actual economic risk remains identical.

Permanent loss is circular logic

Defining risk solely as permanent loss of capital is vacuous because investors cannot guarantee that depressed assets will recover, as demonstrated by markets like Russia where drawdowns became permanent.

Low volatility fuels leverage

Constan explains that bubble regimes uniquely combine trending markets with low realized volatility, tricking investors into believing portfolios are safe and causing them to maximize leverage at peak systemic risk.

Risk targeting inflates bubbles

The behavioral tendency to add risk when experiencing smooth returns—called risk targeting—serves as the actual inflation mechanism, as investors shift from indexes to concentrated bets, margin, and options.

Humility requires systematic guardrails

Rather than timing bubble peaks, investors should establish predetermined leverage maximums (e.g., 130% normally, reduced to 110% in bubble regimes) to counteract natural behavioral tendencies.

Separate conviction from risk control

Portfolio construction must divorce the question of what will happen from how bad is it if I'm wrong, requiring independent risk oversight even when investment confidence is highest.

Volatility drives behavior

Unlike theoretical definitions of risk, volatility directly impacts investor behavior and survival during drawdowns, making it the most relevant risk measure for the 99.9% of investors who aren't Warren Buffett.