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I agree based on my poker experience. I think the first will have less swings meaning you can bet much bigger.

How can you think they spend 75 million on technology? That's an absurd number.

Sorry you took a good loss, but this is pretty funny

I heard they missed on revenue, which is bad for some reason

By day trading fund, do you mean something like a proprietary firm? I think they would have fees higher than 10%

yeah I'm sure these guys are spamming marketable orders

How come NYSE never has subpenny prints? Are the RLP trades reported differently?

look for Don Bright's posts. He used to trade them like 5 years ago

Everyone in our shop used to trade them a while back. Just wondering what shops have everyone trading the same strategy

Do you guys trade imbalances at all?

inventory as in trading high volume but never taking on any significant amount of shares

Yeah all the other orders are definitely automated. It kinda seems like they are just flipping from the bid to the offer not taking any inventory.

Any of you guys make market by hand on the larger spread equities? It seems like it could be profitable but I haven't really heard anyone talk about it.

You know all the indexes are almost the same right?

A couple of months ago, I saw it costs about a dollar per share to borrow TNA for the day

So what does posting an offer of 12.00 do if you aren't posting offers in individual contracts?

Not to derail your thread but I'm guessing 10.95 11.58 12.20 is the bid/mid/offer for all three components of the fly. How do you post an offer of 12.00 when you are trading different contracts? Or does it just cross the market on all three when you can get 12.00?

Most leveraged etfs cost a fortune to borrow. Just trade the SPY

Take the size of your order. Small orders will be simpler. Look at the depth of book and compare to what kind of order you are sending. If you are buying 1000 at market of ARCA with a proactive order, first you will buy the displayed size at the nbbo, then your order will go through the arca...

That data is free, you can do anything with that. In terms of distributing or selling historical data, I believe there are a couple hoops to jump through. A lot of people do it though; it is not impossible.