The Second Leg Down: Strategies for Profiting After a Market Sell-Off

By Hari Krishnan

Quick Summary

A sophisticated guide to defensive and opportunistic trading strategies during market downturns, focusing on the "second leg down" -- the continuation of a sell-off after an initial decline. Hari Krishnan addresses hedging improbable scenarios, correlation breakdowns, trend following as defense, options strategies for market crashes, and the pre-conditions that signal when a market crisis is likely to deepen rather than recover.

Executive Summary

"The Second Leg Down" addresses a gap in trading literature: what to do when markets are falling and conventional strategies are failing. Krishnan distinguishes between the initial market sell-off and the more devastating "second leg down" that often follows, where correlation breakdowns, bank deleveraging, and risk regime changes amplify losses far beyond what most investors anticipate. The book covers the pre-conditions for market crises (credit expansion, regulatory complacency, interconnectedness), defensive strategies (trend following, tail hedging, profit-taking disciplines), and offensive strategies (buying volatility, selling into rallies within bear markets). Key topics include hedging against seemingly improbable scenarios (black swans in correlation), the role of banks as loss multipliers, and the critical importance of having a plan before the crisis hits rather than improvising during it.

Key Concepts

1. The Second Leg Down -- The more damaging continuation of a sell-off, often triggered by deleveraging and correlation breakdowns
2. Risk Regime Changes -- When the statistical properties of markets fundamentally shift during crises
3. Trend Following as Defense -- Using systematic trend-following strategies as portfolio insurance
4. Correlation Breakdown -- The tendency for diversification to fail precisely when it is most needed
5. Pre-Conditions Analysis -- Identifying when conditions are ripe for a crisis to deepen

Critical Assessment

Strengths

• Addresses a genuinely underserved area of trading literature
• Sophisticated treatment of tail risk and crisis dynamics
• Practical strategies grounded in quantitative analysis
• Relevant to both institutional and sophisticated retail investors

Limitations

• Assumes advanced knowledge of options, derivatives, and portfolio theory
• Some strategies require institutional-scale resources to implement
• Back-tested crisis strategies may not work the same way in future crises
• Dense writing that demands careful reading

Conclusion

Krishnan provides one of the most thoughtful treatments available of how to survive and profit during market downturns. The book's central insight -- that the second leg down is more dangerous than the first, and that preparation must precede the crisis -- is both non-obvious and essential.