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It really depends on how well you can scale... All the software you use for trading... For high resolution and wide-screen. Everything thing I see is CUSTOM which scales perfect... Except TWS that scales OK. So I have 4 monitors... 4 x 24" LG (1920x1200) all horizontal side-by-side on...

Those numbers do not add up. If you were doing "70-90%" with "85% profitable months"... Your Sharpe Ratio would be way higher than 2... probably > 5.

This gets to the heart of the matter. Ultimately... All quant analysis starts... With UNDERSTANDING what is random... and what is non-random in the market... And then building systems to exploit non-random market inefficiencies. Taleb's title "Fooled by Randomness" is brilliant...

You have everything 100% wrong... And your post makes no sense. Liquidity in stocks is much better than 12 months ago... And most quants trading stocks are having a record year. I'm sure Bright's top traders are having a record year.

I'm scouting good looting areas... And building the infrastructure required for a professional looting operation.

It's a very good article... but hardly inside stuff. A basic problem is that many highly-educated quants do not have enough trading experience. Trading experience, primarily, helps you avoid losses in extreme markets. It's the same story in every market crisis... Always some variation of...

Quants don't "short"... gamblers "short". Quants build market neutral Porfolios... That are close to 50/50 Long/Short at all times.

Actually... I would have described IB Shortable List as average one year ago... But it has improved dramatically in the last 12 months to GREAT... And I trade very exotic, hard-to-find stocks. That said... All the "locate" functions implemented by IB have been idiotic... And an insult to...

Yes... what I have been trying to explain repeatedly... But a better way to frame it is... Pro Trader with 10 years Experience Intelligence VERSUS Computer Algorithm "Intelligence". Everybody here is looking for a short-cut to free money... So the incredible Learning Curve a...

Of those only PREM/DISC... Or temporary pricing inefficiency determined by quant analysis... Would matter much for stocks that trade around 50,000 shares/day. And I see no evidence from my stats... That a significant amount of trading for these stocks... Occurs on ARCA (it's low single...

I doubt this applies to illiquid stocks. If I enter a Limit order that's gonna sit in the book for 60 minutes... I want it parked at the NYSE... where everybody can see it. For example... Most people trading thru IB and other retail brokers... Are not sophisticated enough to be watching...

> Quote from makloda: > I called IB and told them about this, > and they basically said this was a > limit order that's been in the system > for longer than 6 days (I can't > remember the exact number, could > have been 5 or 7) and > therefore they can not fully analyze > the audit...

Yes... exactly. If you cannot spend $200/month on quality data... You should not be trading. The killer for me... Is that IB wont even give you an NBBO quote. One year ago you could still trade off the NYSE bid/ask... Today that's impossible... You need NYSE plus a quality NBBO quote...

Of course insider trading is rampant. That's just one more reason... Why the odds are stacked against retail traders... It's not even a random system less commissions. It's a random system... Less commissions... less market manipulation by brokers and insiders. Anyone who thinks they...

Here are my stats for October executions through IB... ALL Limit orders sent via SMART... ALL Listed with NYSE as Primary Market: NYSE - 79.5% IDEAL/SMART - 12.5% ISLAND - 5.5% NITE - 1.5% ARCA - 1.5%

It's impossible to list all the possible anamolies... That can happen with TWS... When doing high volume trading over an open internet connection. I only do about 3,000,000 shares/month... And my trading is very fragmented... averaging under 1000 shares/trade... And I'm VERY market...

Have you... "automated" and "mass produced them 100x"? Obviously not... Because it's so f*cking complex and expensive to do... That most people lose money on algo trading... And the market impact is marginal. And a different, but related, example: In 2007... IB has rapidly moved into...

One clear problem with TWS... Is that you can have a live order... That you cannot see via TWS. I just had one like that execute 5 minutes ago. In theory... TWS does not allow you to delete a symbol with a live order... But this is not reliable... And there are VARIOUS...

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Exactly. IMO as a software engineer... Java is very stable and backward-compatible... So Java issues would be EXTREMELY RARE... Maybe seen by people with really unusual or old computers. IB Customer Service is ** directed ** to totally abuse the "Java problem" excuse. This is Evil...