Quote from forsalenyc:
is the toughest part getting filled? what if one side gets filled and takes off before u get the other side filled? do you end up getting ton of unfilled orders eod? how do you come up with a safe strike price? and at what point do you sell out at a loss? thx again
The topic of getting good fills is interesting. Trying to get good fills by legging in is really tough and will not work for a sizable account. It is risky and you never know how the fills will work out. By bidding on the whole spread you know exactly where you stand.
The InteractiveBrokers trading platform has an âOption Traderâ screen that allows us to enter both legs of the spread at once, and place a bid for the spread price. What I do is figure out the midpoint of the bid/ask price for each leg. Then I calculate the difference and enter a bid on that difference + 5 cents. I rarely get filled if I donât add the 5 cents and sometimes I add 10 cents. It depends on the open interest volume.
DITM options are generally less traded than ATM options, so a company has to be of some size to have the open interest for deeper spreads or further out spreads. For example it is harder to get good fills for the ETF DBA than for COP. The option market on DBA is just too thin to get good fills on spreads.
Here is a fictitious example to illustrate.
XYZ APR 50 has a bid 9.0/ ask 9.3 then mid is 9.15
XYZ APR 55 has a bid 4.3/ ask 4.5 then mid is 4.4
So bid is (9.15 - 4.4) = 4.75 + -05 or 4.8.
Another way to check is to figure the mid-point of the bids and the asks, like
9.0- 4.3 = 4.7 and 9.3-4.5 = 4.8.
So your first bid is 4.8 but you might have to go to 4.85 to win it.
I just used a near month example of the bidding process, we would never actually buy a $5 spread for $4.85.
As far as taking losses, read the rest of the thread. Didn't I cover bidding already?