Most Options Traders Think Low Delta Strangles Are Safer. 11 Years of Data Says Otherwise.

Key Concepts

• Strangle: An options strategy involving the sale of both a put and a call option with different strike prices, both out-of-the-money.
• Delta: A measure of the probability that an option will expire in-the-money; often used to select strike prices.
• POP (Probability of Profit): The statistical likelihood that a trade will be profitable at expiration.
• Tail Risk: The risk of extreme, outlier market moves that fall outside the expected distribution.
• Buying Power: The capital required by a brokerage to maintain an open position.
• Gamma: The rate of change in an option's delta; high gamma indicates that the option's price sensitivity increases rapidly as the underlying stock moves.

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1. The Fallacy of Low-Delta Strategies

Many traders are drawn to low-delta strangles (e.g., 5-delta) because they offer a high Probability of Profit (POP). The common misconception is that because the strikes are rarely tested, the trade is "safer." The presenters argue that this is a dangerous illusion. While low-delta trades have a higher percentage of winning trades, they collect very little premium. When an outlier move occurs, the loss relative to the small credit received is catastrophic.

2. Study Methodology

The analysis covered data from 2015 to the present, comparing 25, 20, 16, and 5-delta strangles.

• Management: All trades were managed at 21 days to expiration (DTE) or at 50% of the maximum profit.
• Metrics: The study compared average P&L as a percentage of credit received, the impact of outlier events (e.g., 2020 COVID crash), and the "worst single loss" as a multiple of the credit received.

3. Key Findings and Data

• Premium vs. Risk: In non-outlier scenarios, 5-delta strangles keep 31.4% of the credit. However, when outlier moves are included, this drops to 18.2%.
• Capital Efficiency: On a buying power basis, 25-delta strangles are significantly more efficient. They return 1.16% of buying power per trade, more than double the 0.49% return of 5-delta strangles.
• Tail Risk Multiples: The "worst-case" loss for a 5-delta strangle was 44.2 times the credit received, whereas a 25-delta strangle lost only 13 times its credit.
  • Insight: A single outlier event on a 5-delta trade can take years of consistent, small gains to recover.

4. The "Eating Like a Bird, Pooping Like an Elephant" Phenomenon

The presenters use this analogy to describe the risk-reward profile of low-delta trading. Traders collect small, consistent credits (eating like a bird) but are exposed to massive, infrequent losses (pooping like an elephant). Because the credit is so small, traders often feel compelled to increase the number of contracts to reach a desired profit target, which exponentially increases their exposure to tail risk.

5. Strategic Recommendations

• Avoid Over-leveraging: Do not increase the number of contracts on low-delta trades to match the premium of a higher-delta trade.
• The "Sweet Spot": The data suggests that selling between a 20 and 30-delta strangle provides the best balance of capital efficiency and risk management.
• Mechanical Management: The study assumes a mechanical approach (no rolling or adjusting). The presenters note that in real-world scenarios, traders should use the capital saved by not over-leveraging to execute defensive strategies (e.g., butterflies, diagonal spreads) when the market moves against them.

6. Notable Quotes

• "One bad trade can wipe out a lot of good trades."
• "Don't size your trades based on the probabilities; think of the credit received and the tail risk per unit of credit."
• "If you wanted to trade five [5-delta] contracts to get the same premium as the 25-delta... you would actually be carrying way more than twice the total outlier risk."

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Synthesis and Conclusion

The primary takeaway is that Probability of Profit (POP) is not a proxy for risk. While low-delta strangles offer a higher statistical chance of success, they are fundamentally inefficient due to the poor ratio of premium collected to potential tail-risk exposure. Traders should prioritize capital efficiency by trading higher-delta strangles (20–30 delta) in smaller sizes, rather than chasing high-POP, low-premium trades that require excessive contract sizing. This approach preserves capital and provides the flexibility to manage positions effectively when market outliers occur.