Rewriting calendars and iron condors when volatility regimes shift

Treat the overlay as a regime instrument

The editorial reading of this archive is that a calendar or an iron condor is a regime overlay rather than a range bet left untouched until expiration. The archive workflow opens time spreads when implied volatility is compressed, then adds or converts a wing only after the underlying has already shown a new level.

A double calendar pairs a call calendar above the current price with a put calendar below it. Each calendar spread sells a nearer expiration and buys a farther one at the same strike. One presented workflow starts a single calendar at the current price and adds the second calendar only after the underlying has moved, instead of opening both wings at once.

Choose the structure from implied volatility

Double calendars are described as working best in a low-volatility setting. Double diagonals are described as usable in both low-volatility and high-volatility settings. Implied volatility is used here to choose calendar versus diagonal construction, and later to reset strike placement after a move.

After an upside move to 50.93, a calendar can be rewritten into a diagonal by selling the near 50 call, buying the far 50 call, and leaving the near 55 short call in place. The long and short options then no longer share the same strike. Further profit requires a larger additional advance. That sequence is the archive example of converting only after price has proved a new level.

Keep the iron condor inside one standard deviation

An iron condor is a call credit spread above the market plus a put credit spread below it. Limited risk is framed as the strike width minus the net credit received.

Index condors in the material are opened about 49 days before expiration and aimed at an exit one to two weeks early. Short strikes sit near one standard deviation, with short-call deltas around 7 to 8, short-put deltas around 6 to 7, and one extra strike of room on the put side. Standard-deviation placement locates those shorts near one standard deviation from the market and buys the next strike farther away.

Rewrite when the inventory no longer matches

Four adjustment cues are specified: a short-call delta trigger of 25, a short-put delta trigger of 20, a credit spread that can be closed for 0.20 or less, or 50 to 60 percent of the net credit already captured.

On September 29, 2006 a Russell 1000 condor was opened at 725.60 with 49 days to the November 2006 expiration. After a rise from 725 to 757 the put credit spread was closed for a 0.20 debit and replaced at higher strikes.

When strikes are rolled, a new standard deviation is calculated from the implied volatility of the at-the-money call. New shorts are not sold above a 10 delta. The structure is exited if the loss reaches one to one-and-a-half times the original credit. Editorial reading: leftover credit, delta, and a fresh at-the-money volatility print are the cues that the old wings no longer match the book.