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OK, thanks. Can you explain just how this works in practice? E.g.: 1) Algo pings my 2,000 x $4.55 Sell order sitting on the NYSE, verifies that it's a real / not-spoofed Sell for 2,000 shares. 2) ? 3) ? 4) Profit. IOW, once algo knows there's a valid 1,900 shares to be purchased @ $4.55, what...

Thanks for your reply, it makes sense. 1) Curious: what do you mean by algos "leaned on my order"? 2) I'm sure that I'm not using my SMART router optimally, since I haven't configured it whatsoever. Where do you suggest I begin? I also obviously mis-understand just exactly how it's supposed to...

Right, but that doesn't really explain how my order could get jumped 'mid-fill', right? ...unless you're suggesting that a resting order could have been activated immediately after I got my partial fill of 100...? Is that how these order types work? My order was posted and filled at NYSE. It...

Here's what I don't understand: I submitted a Smart-routed Limit order at to Sell 2,000 XYZ at $4.55 (with the spread at 4.50/4.55) A lot of trades were going through at 4.55 but my order was unfilled, which I figured was because my 4.55 was "behind" other orders also at 4.55 After about 30...

Just confirming that I tested it, and the modelPrice does indeed pull in what you're looking for (at least via the DDE API). gl

In the Excel DDE API documentation here, it lists one of the available values you can query as "modelPrice", which appears to be exactly what you're looking for, no? I haven't tried it yet but I use the other available values on that page so I don't see why it wouldn't. No clue as to non-DDE...

I'm not sure this is true; where did you get this info from? After poking around more on IB's website, I found this policy which appears to speak directly to the Q I was asking: "You should review your positions prior to expiration to determine whether you have adequate equity in your account...

Reg-T. Right...but any idea about whether (a) the auto-exercise of ITM options happens before or after (b) the release of margin associated with expiring OTM short positions? That's what had me concerned since if the system tries to do (a) prior to (b), it seems like the auto-exercise could...

Glad you asked this, since it fed into a related / follow-up Q I had. In this particular scenario, YES I would have been more than fine come Monday morning, because I had several short positions that were expiring as well. And even though they were very far OTM, they still -- as of Friday...

Encountered this for the first time on Friday (expiration day) around 3pm: IB's system rejected my attempts to exercise ITM calls, saying that I didn't have sufficient margin...(presumably because even though I had the cash required to buy the underlying shares, doing so would have left me in a...

...yeah, im confused about whether he's saying that his clients are restricted to only being able to trade things on US exchanges(?) But just prior he says that he's unaware of any such restriction. So unclear whether he's saying that he believes this restriction does or does not exist.

...because you may want to purchase options on a company that's not interlisted on a US exchange?

I'm getting conflicting info on this -- IB told me this is prohibited by the CFTC, but I couldn't find any reference to that on their website. Moreover, IB's own US-facing website has a section laying out margin requirements for Canadian stock options. (Though the IB website is full of all kinds...

You don't understand how IB's historical lookup works, but that's fine. I don't need OPRA codes, I just need the strike prices.

Yup, that's my fallback plan. But if such a list existed, it would save me a half day of work or so given how many I want to look up. Hence my post here.

I want to run a bunch of backtesting stuff (prob using IB's historical data lookup) for a bunch of different underlyings, but I need to know what strike prices were offered for which expiry dates in order to set up the lookup parameters properly. I don't need the actual bids/offers/trades...

Thanks for the replies. Is there a specific formula associated with this notion? I'd been thinking that the relevant Q (assuming you did not have strongly-held beliefs about the movement of the underlying) would simply be whether the dividend you'd stand to capture by exercising early was MORE...

I've typically only traded options on non-div underlyings, and I think I made a modest mistake so just trying to understand it in order to avoid in the future. I was long 10 VET $46 Oct 21st Calls (canadian listing, not US) At the beginning of last week, VET was trading ~$54, and was going...

Thanks, all for the replies -- I should admit, though, that I'm pretty lost as to just what you mean in places (I'm a relative noob with currencies). I know what volatility is, and I know how to run Monte Carlo sims...what's the "fwd", though? Is there software (or a free web resource) that can...

Hope my Q is not too elementary for this forum: I'd like to know how to convert the USD:CAD currency rate/volatility to a frequency-distribution chart that shows the likelihood (given the current currency-pair volatility) that the CAD will be trading at various levels at X future date. To put...