The call ratio trap: bullish view, short-vol trade

Here's a trap that catches people all the time.

You start with a directional view. You sit down to build a position that expresses it. And you end up holding something that barely has any delta.

The most common version of this is the one-by-two call ratio.

You buy one call. You sell two higher-strike calls against it. Often you can put the whole thing on for zero cost. The payoff diagram looks lovely. There's a sweet spot where you make good money, and the entry cost was nothing.

That's the version that sold you the story in your head.

Now look at what you're actually holding.

You're net short a call. Beyond that upper strike, your P&L turns and keeps going the wrong way as the stock rises. The trade you built to profit from the stock going up now loses if the stock goes up too much, too fast.

The good version of the outcome you wanted is a losing trade for you.

It gets worse when you look at the delta.

The delta on a one-by-two call ratio can be tiny. Sometimes it's negative outright. You started with a bullish view of the stock and constructed a position that's much closer to a short volatility trade than a long stock view.

You expressed your view badly. The structure has a bullish appearance on the final payoff diagram. The Greeks show that you are running a short-vol trade.

This is fine if a short vol trade was what you meant to do. If you had a view that the calls were rich and wanted to fade them, the one-by-two is a reasonable expression of that.

The trap is when a short vol trade wasn't the point.

The fix is to go back to the reason you entered.

If your conviction was about the price of the stock, keep some delta. A long call. A call spread. A structure where being right on direction actually pays you.

If your conviction was about the option being expensive, trade the vol on purpose. Sell the strangle. Do the ratio deliberately. Build the structure knowing it's a short-vol expression.

Both are legitimate trades. The problem is drifting into one when you meant to do the other. The structure has to match the view.

Matching the structure to the actual view is one of the disciplines that separates a professional trader from a novice.

Want to know more? The framework I built across 20 years on bank options desks is below.

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The bigger point extends past the one-by-two.

Every options structure has an volatility view baked into its Greeks. If you don't know what that view is, you're taking it on unconsciously.

The call spread is a bounded directional bet with a slight vol tilt that neutralises as you rally. The straddle is pure long vol with almost no direction. The iron condor is short vol plus short gamma inside a range. The calendar is long vega on the back with short gamma on the front and earns positive theta.

Every structure carries a view. Your job is knowing which view you're actually holding after you've put it on.

The Greeks tell you what you own. The payoff diagram tells you what it looks like on paper at expiry. Trade the first and treat the second as decoration.

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