Quote from erol:
That was extremely helpful. I'll incorporate this check/calculation on my next fly's.
Using Johns' quotes for puts for the Mar '10 butterfly:
100P $0.70-$1.40
105P $1.90-$3.40
110P $4.00-$8.00 ...with a midpoint of $1.75
Giving me 3/4 of the B/A spread would be a credit of maybe 15 cts (see below).
I would not dabble with options with such wide spreads unless I got a fantastic fill near the opposite end of the natural and that's not likely to happen too often. For example, if I wanted to sell the 105/100p vertical, the natural would be $.50 x 2.70 with a midpoint of $1.60. I wouldn't touch it unless the credit was somewhere in the vicinity of $2.30 to $2.40 so if forced to exit at mkt prices, the pain wouldn't be as severe. Pay to play when something is liquid and moving. Sit there and wait for a fool to show up when dealing with stagnant Holland Tunnel wide B/A spreads.
Regarding entering and exiting positions like this, it's a good idea to look at combo orders for any other available platform orders that the ingredients could be recombined into.
One possibility would be the 100/105p and 105/110p verticals. Another would be 100/110p strangle with the two 105 p's as a standalone (not a good pairing because the 100p has the smallest spread and you want to work the largest spreads in your combos). And lastly, a 1x2 ratio for the 110/105p vertical with the 100p as a standalone.
These quotes are a nightmare but let's pretend it's worth chasing. The easiest thing to do is to place the butterfly with the price that you want. For the moment, say a debit of $1.75. Filled? Done.
Since the Mar 100p costs $1.40, if I could get the 1X2 110/105p ratio for better than a debit of 35 cts, I'd have a better fill than the midpoint of $1.75
I would consider 2 possibilities. 1) Set a price alert at a better price on the butterfly and on the 1x2 ratio (50-75 cts, whatever) and hope someone shows up, or
2) Place crazy orders for one or both orders - say giving me 3/4 of the spread difference. In the case of the butterfly, that's a credit of 15 cts and for the 1x2 ratio it's +$1.05. The 1x2 ratio leg in would yield a poorer net fill with these numbers (- 35 cts) since the last leg is paid for at the market ($1.40).
The prices are not imp't (I hope the calcs are not fuzzy mathed). The imp't thing is to grasp the possibility of getting to the same place differently and better. IRL, you often see better prices on combo components of multilegged larger combo positions.
CAVEAT: If one does not have the ability, discipline and temperament for legging in and/or taking short/naked positions first, one should only consider entry into alternate possibilities from the long side (or at least net long) and then execute remaining short legs last.