When selling options, the hedging approach matters as much as the position itself. I’ve come to realize a key distinction that changes how I think about downside protection in short volatility strategies.

The IV Expansion Problem

When the index moves down, implied volatility starts expanding. This is the natural behavior of volatility — it increases when prices fall. The problem emerges when you’re relying on sold call options as part of your hedge.

Here’s the issue: expanding put IV doesn’t just affect your put positions. It also causes the IV of your sold call options to expand as well. This might seem like a benefit at first, since higher IV means your short calls are worth more. But it actually undermines your hedging effectiveness.

When you’re short puts and need downside protection, you want that protection to work reliably. If IV expansion is simultaneously making your sold call hedges more valuable, you’re not getting the clean downside protection you’re seeking. The dynamics are fighting each other.

The Better Approach

The solution is to hedge the downside using hedged futures or risk-defined futures. This approach works regardless of what IV is doing because futures have linear payoff profiles. When the index falls, your short futures position profits — no volatility complications, no IV expansion effects.

On the upside, you can use puts or ATM puts for hedging. This works because when markets move up, volatility typically doesn’t expand the same way it does on the downside. Rising prices are generally accompanied by stable or even declining IV, so your put hedges remain effective without conflicting dynamics.

Practical Structure

A complete approach looks like this:

  • Downside hedge: Short futures or hedged futures
  • Upside hedge: Put options or ATM puts

This gives you volatility-neutral protection on both sides, with the added benefit that your options positions (if you’re also running an options-selling strategy) can focus purely on collecting premium without needing to serve double duty as hedges.

The Core Insight

The key insight is that IV expansion is asymmetric. It behaves differently on the downside than the upside. Sold calls as downside hedges create a dynamic where the very thing causing your hedge to become more valuable is also reducing its effectiveness as a pure hedge. Futures don’t have this problem — their delta is constant regardless of IV levels.

This is why risk-defined futures are preferable to naked short options when you need reliable hedging on both sides of the market.

This post was derived from 2026-03-23 – Journal

Related: A Low-Gamma Straddle Strategy for Low IV Environments

What’s your approach to managing IV expansion risk when hedging short volatility positions?