2019issue C0824-25
Uneven-wing modidor as one limit package
A modidor keeps the iron-condor short-call and short-put frame and then lets the call-wing and put-wing gaps differ. The archive specifies that directional-bias, the package's typical negative-vega, and one four-leg limit-order as a single option-spread procedure.
- A modidor starts as an iron-condor and then uses unequal call-wing and put-wing strike gaps, combining condor wings with modified-butterfly spacing.
- The July SMH example bought ten 104 calls and ten 86 puts and sold ten 103 calls and ten 93 puts, so both shorts were five points out of the money while the long call sat six points out and the long put sat twelve points out.
- The procedure required active option volume, tight option bid-ask spreads, and one limit-order on the entire package so slippage would not change the intended structure.
- The structure was described as typically negative-vega, so entry was preferred after implied volatility had already increased, and a reaction plan was required before entry because a fast decline could consume the 6.67 cushion.
A condor with unequal wings
A modidor is assembled as a four-leg condor whose call-strike gap is allowed to differ from the put-strike gap. The construction combines condor wings with modified-butterfly spacing. In the iron-condor framing used here, a short call sits above the underlying and a short put sits below it, each paired with a further out-of-the-money long option. The package benefits if price stays between the short strikes, and the long options cap the loss.
A standard condor keeps the call-wing width equal to the put-wing width. A modified-butterfly is defined by unequal strike spacing. The directional-bias is the payoff tilt created when the call-wing strike width differs from the put-wing strike width. Read as an option-spread, the package specifies entry, exit, and abstention together rather than as separate single-option bets.
The July SMH package
With SMH at 97.93, the July example bought ten 104 calls and ten 86 puts and sold ten 103 calls and ten 93 puts. Both short options were five points out of the money, while the long call was six points out and the long put was twelve points out, producing an upside tilt and greater downside exposure.
The stated expiration payoff for that package was positive if SMH finished at or above a 91.26 breakeven, with 6.67 of room below the 97.93 spot print before that level. A further variation increased the long 104-call count from ten to twelve in order to add upside participation.
One limit-order for four legs
Because four options must be filled together, the procedure specified active option volume, tight option bid-ask spreads, and one limit-order covering the entire package in order to limit slippage. The limit-order specifies an acceptable net price and submits all four legs as one package so slippage does not break the intended structure.
Negative-vega and a reaction plan
The structure was described as typically negative-vega, so a later rise in implied volatility would reduce the open mark and a later fall would improve it. Entry was therefore preferred after implied volatility had already increased.
A reaction plan was required before entry. The package was not treated as unmanaged, because a fast decline can consume the 6.67 cushion and enlarge open losses.
All readings on this track · 20 readings
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- 1996Index spread pairs with seasonal filters and limit orders
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- 2005Limit orders, routing paths, and commission tradeoffs
- 2005Bracket orders that precommit stop and target exits
- 2005Precommit a stop-loss at entry with pivot triggers
- 2006Mechanical systems need fill-aware failure modes
- 2006Ranking near-term support for ETF limit entries
- 2007Precommit futures stops and limits with contingent orders
- 2007Overnight option limit fills, stops and trailing exits
- 2010Seasonal commodity windows and stop-limit fill risk
- 2011Routing fees, do-not-ship flags, and maker-taker limit orders
- 2011A three-bar inside-bar commodity setup still needs portfolio context
- 2012Limit orders when a tick saved costs the fill
- 2013Futures platform order entry and per-trade fees
- 2013Iceberg hidden size and option-spread packages
- 2014Marketable limits, directed venues, and spread filters
- 2015Filtering commodity option liquidity by spread, not open interest
- 2015Paired range-bar averages and next-bar limit exits
- 2019Uneven-wing modidor as one limit package