Recent content by tgtrader

This didn't happen all at once... FX markets started moving in a big way prior to equities/S&P futures massive sell-off. After that began, the market execution sweep order (supposedly from BarCap) hit the S&P futures (starting at around 1100 level, perhaps a bit below). As the S&P sold off...

And you know what's really funny about this whole debate, looking back at that video by Jim Cramer... A widely believe reason for the May 6th "flash crash" was the improper execution of a large S&P futures order by BarCap. This was not a crash generated by computer algos... in fact, its quite...

So you want to use Jim Cramer and a U.S. Senator's idea of what HFT is? hahahahahah We don't need to assume that... its the frecking definition. If you want to debate flash orders or practices where firms have access to information before others, you and I are on the same page... its...

Hey, buddy, stop twisting the definition of HFT to your liking. HFT is EXACTLY what it stands for... HIGH FREQUENCY TRADING. That does not mean that, as someone running a HFT program, you need to (1) Have information unavailable to others (retail orders BEFORE they hit the market) and/or (2)...

Thank you, at least someone here has experience (btw $150/month for co-lo is pretty sweet... nice job). Asiaprop, next I bet you're going to argue that those who write HFT programs had their DNA modified at birth to make them smarter. Stop looking for excuses and grow up. Until then, a...

Laugh all you want... you write like an academic. I've worked with a group that HAS DONE THIS, for the EXACT prices I provided. Why isn't everyone doing this? Because most people are stupid, have zero programming knowledge or drive to learn it, and/or would rather whine like you. Hell, you...

This whole belief that to participate in HFT you need to (1) have tens of thousands of dollars per month to get co-located, and (2) a supercomputer is so far off it actually IS funny. (1) I know of a firm that offers co-location (or at least sits at a facility near the NYSE/NASDAQ with a...

Volume has definitely been on the lighter end, but I think that the actual number recorded publicly is smaller than in reality... over the past two years, the use and accessibility of dark pools has increased. I'm not sure, but I don't think those trades are included in total NYSE/NASDAQ...

heh, seems like somebody's bank may have owned a few IO MBS

True, but now we're getting into the law of large numbers theorem... which tells us what we can expect (with the always useful SD helping our confidence) over the time of the trial. Although it sounds a bit odd, the theorem will tell us what to expect over time, but not at any specific time...

I'm sorry but this is wrong. Each coin flip is an independent trial, heck, its commonly THE definition for independent trials in elementary statistics. You can make absolutely no assumptions of what your next coin flip will be based on the prior 1 or 1,000 flips. To go off your example...

Wow, thanks for referring me to that book... definitely something I am going to get ASAP and I will look into your suggestion. Thanks again.

Standard Oil, Just reading through this thread now, really good work so far. I did notice that earlier on you said that back in the day you had more access to more computing power, allowing you to judge what reactions would be felt from eco numbers. I've got a good bit of computing power...

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