I did. (The second link).
Watched the furry TOS guy. Thought, meh, this won't end well.
Chucked at "hey, who is this woman? look at the risk she has on".
The smart guys - atticus, sle, martinghoul, newwurldmn, sellindexvol66
The fast guys - DeeDeeTwo, 2rosy, Chicago_CTA, winstonTJ, kevin schmit
And the wise guys - Maverick74, Daal, Old time, nutmeg
You lost me there at *1.
In an ideal world maybe.
Everywhere else, it's inter-desk thermonuclear warfare.
Low volume environment making it all about dividing the pie.
+1
OP may find that all of this programming is a bit academic, without having an actual trading strategy.
All very complex & clever, but that does not put cash in the bank.
Depends on the exchange (& I think you know this). Some funny business on certain omx based exchanges, working around OUCH to binary apis. Either way, you're not going to "see" a market order before it's matched. Pretty obvious, by definition, I would have thought.
I'd really like to read a detailed explanation of how anyone can see a market order ahead of time, rather than these huffy assertions. Oh, and details of anyone making a living in any business, by paying the spread.
I kind of agree, in so far as managing a stack of orders is tricky, especially skewing and re-sizing without losing priority -- but -- none of that is sufficient to make any money.
If you can't do the quant modelling work to figure out a fair value to quote around, then don't even bother to...