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

Channel: Excess Returns Published: 2026-05-24 18:25
Excess Returns

This weekly wrap centers on bubble behavior, risk measurement, AI infrastructure constraints, and private equity’s reported low volatility. The hosts summarize clips from Cliff Asness, Andy Constan, Gene Munster/Doug Clinton, and Ben Carlson, drawing a common theme: investors often misread risk, over-lever when conditions feel calm, and focus on the most sensational dangers rather than the ones that actually drive portfolio outcomes.

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Detailed summary

This episode is a clip-driven weekly wrap, not a single thesis interview. The dominant thread is how investors misperceive risk in regimes that feel safe or exciting: bubbles can be low-volatility and trending, private assets can launder away visible volatility, and AI may be constrained less by demand than by the physical buildout of power and infrastructure. The hosts use the clips to build a broad argument that behavior matters as much as fundamentals: the wrong framing of risk leads to leverage, crowding, and poor decisions. The first major segment features Cliff Asness on volatility versus permanent loss of capital. His core point is that dismissing volatility as irrelevant is too simplistic, because volatility is often useful for understanding dispersion, behavior, and portfolio construction. …

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Main takeaways

  1. Volatility is not the same thing as permanent capital loss, but it is still a real risk because it changes behavior and affects portfolio construction.
  2. Bubble regimes can look calm on the surface: low realized volatility and steady gains often encourage the worst possible leverage decisions.
  3. Private equity’s low reported volatility is not the same as genuinely low economic volatility; smoothing and infrequent marks can distort the risk picture.
  4. Momentum tends to outperform mean reversion in parabolic bubble regimes, while strategies built for normal markets can fail badly.
  5. AI demand may be strong enough to support a long investment cycle, but power, grid, and infrastructure constraints are likely the real bottleneck.
  6. Behavioral errors often come from vivid but low-probability risks, not the risks that actually move portfolios most often.
  7. There is a real possibility that AI causes more near-term labor disruption than past tech cycles, even if the long-run effects are positive.

Market read by horizon

Short term

Near term, the risky setup is complacency: if volatility stays muted, investors may keep adding leverage or crowding into the strongest names. The tactical edge is to be cautious with mean-reversion bets and skeptical of exposures that only look safe because marks are smooth.

  • The immediate setup is one of regime sensitivity: when markets feel calm, the danger is investors reaching for more leverage or exposure than they should.
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  • Bubble-like conditions favor momentum and punish mean-reversion trades; that matters tactically for active allocators right now.
  • AI trade positioning still depends heavily on the pace of power buildout and capex follow-through from hyperscalers.
Mid term

Over the next few months, the likely path is continued regime tension: AI and bubble-related momentum can persist if capex and energy buildout remain strong, but the market should be watched for signs of leverage creep or a volatility spike. Confirmation would come from broadening infrastructure spend; invalidation would come from a sharp risk-off that breaks trend and forces deleveraging.

  • Over the next several weeks to months, the key question is whether bubble-like behavior persists: if trends stay strong and volatility stays muted, leverage and crowding risk rise further.
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  • For AI, the base case discussed is continued capex growth and more infrastructure spending, especially if demand keeps outrunning supply.
  • The market will likely keep debating whether energy availability is a binding constraint or merely a delay; confirmation would come from sustained hyperscaler spending and continued buildout in power-related assets.
Long term

Structurally, the episode argues that markets reward those who understand regime shifts, not just valuation or headline risk. In AI and private markets alike, the durable question is whether investors are measuring actual economic risk or merely the visible version of it.

  • The structural message is that market risk is often behavioral and regime-dependent rather than purely statistical.
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  • If illiquidity becomes a feature investors actively seek, the old private-equity illiquidity premium may compress structurally.
  • AI’s durable thesis is not just software adoption but the industrial-scale conversion of energy into compute and intelligence.
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Key claims (10)

NEUTRAL

Volatility is a useful measure of risk and portfolio behavior, even if it is imperfect and backward-looking.

Asness argues that volatility estimates can be wrong but still provide important information about dispersion and portfolio construction.

BEARISH bubble dynamics markets

Bubble regimes often combine trending prices with low realized volatility, which encourages investors to lever up at the worst possible time.

Andy Constan describes bubbles as low-vol, persistent-trend environments that make portfolios feel safe and invite leverage.

MIXED

Risk targeting is sensible in normal markets, but in bubbles the danger is that investors increase leverage precisely when perceived risk is lowest.

Constan says people naturally lever up in calm periods, yet that's often the wrong time to do so.

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Assets discussed (9)

S&P 500 — SPX
NEUTRAL index

Used as a comparison for public-market volatility versus private assets.

Private equity
MIXED other

Discussed as having smoothed, underobserved volatility; the speakers are skeptical of claims that it is truly low risk.

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Speakers

HOST Jack Forehand GUEST Andy Constan HOST Matt Zigler GUEST Gene Munster GUEST Doug Clinton GUEST Cliff Asness GUEST Ben Carlson

Interview (12 Q&A)

risk vs volatility

How do you define risk, and why do you push back on the idea that risk is only the permanent loss of capital?

Cliff argues that the 'permanent loss of capital' definition is vacuous because you can never be certain a loss will come back — only a crazy person is 100% confident. He explains that volatility is useful because higher short-term volatility generally correlates with a wider dispersion of 5- and 10-year returns, which is important for portfolio construction. He also says risk control should be a separate question from what you think will happen — it's about how bad it will be if you're wrong.

volatility risk

How should investors think about volatility and risk when managing client money?

The guest argues that for most people volatility is absolutely risk, because it drives bad behavior and can lead clients to panic or make poor decisions after large drawdowns. The point is that a permanent-capital framework like Buffett's does not fit how most investors actually operate.

humility

What is the main lesson from Andy's bubble episode?

The guests frame the episode's lesson as humility and self-knowledge: understand the regime you're in, know what personal weaknesses it triggers, and try to limit the mistakes you make in that environment. They emphasize there is no perfect playbook, only better awareness of your own behavior.

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Where this transcript pushes against consensus

  • Asness’s defense of volatility as a useful risk measure is compelling, but the hosts note it can understate real-world client and behavior risk.
  • The claim that private equity returns are not inflated by smoothing is challenged by the argument that unobserved volatility still exists and should not be ignored.
  • The AI bullish case is presented as one plausible path, but the hosts emphasize uncertainty and do not accept the view that a bubble is impossible.
  • The idea that staying in the middle on penalty kicks is statistically better may be true, but the hosts note that real-world decision-makers often choose action to avoid looking foolish, which limits the analogy’s practical usefulness.

Topics

bubble regimesvolatility and riskprivate equity valuationAI infrastructureenergy and electricitymomentum vs mean reversionbehavioral financeavailability biasknowledge work disruptionportfolio leverage

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