2010issue C0554-58
Iron condor range, volatility and diversification
An iron condor is a four-leg, risk-defined credit that expires profitably if the underlying stays inside the short strikes. Editorial view: whether frequent small credits survive a large move depends on strike choice, implied-volatility context, and the mix of equities and commodities.
- An iron condor is a four-leg, same-expiration credit whose maximum gain and maximum loss are known at entry.
- Very far out-of-the-money short legs, such as about a 10 to 15 delta, can produce frequent small credits, but one large loss can erase many prior gains and leaves few adjustment paths.
- Short strikes near one implied-volatility standard deviation target the range the market already prices as occurring about 60 to 68 percent of the time and typically collect a larger credit than farther strikes.
- Mixing gold, oil, rates, and equities can provide more genuine diversification than a book of equity names, which can become highly correlated in a strong move.
A four-leg, risk-defined credit
An iron condor is a four-leg, same-expiration credit spread built from a short out-of-the-money call vertical and a short out-of-the-money put vertical. It can also be written as a short out-of-the-money strangle plus a farther long strangle that caps loss.
The four-leg structure is risk-defined at entry. Maximum gain and maximum loss are known immediately, and expiration profit occurs if the underlying remains inside the short-strike range. Opened for credit, a typical iron condor is short vega and long theta.
As an option income strategy the position is typically market-neutral. It is evaluated as one entry, exit and abstention rule set rather than as a directional bet.
Far strikes versus standard-deviation strikes
Selecting very far out-of-the-money short legs, such as about a 10 to 15 delta, can produce frequent small credits. A single large loss can erase many prior gains and leaves few adjustment paths.
Placing short strikes near one implied-volatility standard deviation from spot targets the range the market already prices as occurring about 60 to 68 percent of the time. That placement typically collects a larger credit than farther strikes.
Implied volatility and vertical skew
Income on a market-neutral condor comes from differences in implied volatility across the legs. In equities, vertical skew prices out-of-the-money puts richer than at-the-money puts.
Cross-asset mix and genuine diversification
Equities can become highly correlated in a strong market move. Mixing gold, oil, rates, and equities can provide more genuine diversification than a book of equity names alone.
Commodity option books can see large short-horizon moves more readily than a typical equity index, so short-volatility commodity exposure requires more work than the same style on equities.
Editorial interpretation: diversification here means spreading condor exposure so a single equity move does not dominate the book. It does not remove the extra work that short-volatility commodity books require when large short-horizon moves appear.
All readings on this track · 13 readings
- 1989Evaluate mechanical systems by peak-to-trough drawdown
- 1991Pairwise return covariance as a construction gate
- 1999Managed-futures construction from trend, leverage, and diversification
- 2000Treat a single name as a node on a correlation tree
- 2002Rising correlation undercuts foreign-listing diversification
- 2003A directional call is not the skill that keeps an account alive
- 2006Risk-adjusted return for cross-market trend systems
- 2010Iron condor range, volatility and diversification
- 2015Reverse diversification when one winner enters a quiet book
- 2016Rebuild the book when correlations and commentary flip
- 2017Idle screens and unused choice across markets
- 2018Professional trader skill as a staged operating system
- 2019Mechanical systems as a critique of discretion