- Joined
- 16 June 2005
- Posts
- 4,281
- Reactions
- 6
Re: Interactive Brokers and Options trading in OZ
Thanks for checking Cutz At least you are aware where the trouble lurks - just make sure you never, ever have a minus sign preceeding a limit price when selling.
Wayne, have just taken this snapshot of the TWS page - all the displayed spreads were generated as debit spreads (though it shouldn't matter).
The top combo was a combo of the two calendar spreads generated in the generic window. Entered it carefully, filled in the fields methodically as they presented. Still it shows negative bid/ask.
The next two calendar spreads are also showing negative bid/ask. Cutz found the same thing.
Then tested it out with a vertical and, again, negative bid/ask. Cutz set up a vertical and it shows normal (positive) bid/ask.
Then, for whatever reason, I generate a butterfly and voila, it gets it right
The only pattern I can find here is that those with negative bid/ask have a sell leg entered first (idendified by the minus sign) in the description column. The butterfly has a buy leg entered first as can be seen with the initial plus sign.
Anyway, snap shot is below so you can see what I mean:
EDIT: In the snapshot I see the bid is -0.010 for the fly, however the ask is positive. It is simply that the bid price is so low and not part of the problem I have discussed. eg mid price for the fly would be approx 14c.
Thanks for checking Cutz At least you are aware where the trouble lurks - just make sure you never, ever have a minus sign preceeding a limit price when selling.
Wayne, have just taken this snapshot of the TWS page - all the displayed spreads were generated as debit spreads (though it shouldn't matter).
The top combo was a combo of the two calendar spreads generated in the generic window. Entered it carefully, filled in the fields methodically as they presented. Still it shows negative bid/ask.
The next two calendar spreads are also showing negative bid/ask. Cutz found the same thing.
Then tested it out with a vertical and, again, negative bid/ask. Cutz set up a vertical and it shows normal (positive) bid/ask.
Then, for whatever reason, I generate a butterfly and voila, it gets it right
The only pattern I can find here is that those with negative bid/ask have a sell leg entered first (idendified by the minus sign) in the description column. The butterfly has a buy leg entered first as can be seen with the initial plus sign.
Anyway, snap shot is below so you can see what I mean:
EDIT: In the snapshot I see the bid is -0.010 for the fly, however the ask is positive. It is simply that the bid price is so low and not part of the problem I have discussed. eg mid price for the fly would be approx 14c.