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    how to do judge the degree of data-mining/over-fitting in a strategy?

    This. You must have enough trading experience and market expertise... To answer this question quite precisely. Your trading strategy MUST give you a Competitive Advantage... And if you cannot explain it in 30 seconds or 30 words... Then you do not have one. There is a basic reason...
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    Low Latency Trading Start-Up

    Low latency system "on a budget" = oxymoron
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    Trading Costs

    It's not the cost to register a B/D which might be $20,000 and about 6 months time... It's the administrative overhead which will kill you... Also B/Ds are locked into Clearing Contracts... Which are not necessarily cheaper... But a signing bad 50 page contract can kill you. It you are...
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    Lightspeed API

    The TWS API is not meant to be enterprise grade software... It's something given away for free... So they owe you nothing in terms of support. With the explosion of Algo Trading this is now a huge market... Even major banks are not developing Proprietary Software... They buy something...
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    Protecting successful trading strategy

    This is like fearing that the Casino... Is gonna "reverse engineer"... Your pathetic, marginal blackjack strategy... Which is the 1,000,000th variation on theme. Making money charging fees is relatively easy... Extracting money from efficient markets is hard... So no... your broker...
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    Market Order or Limit Order

    If you use Market Orders... Or anything that turns into a Market Order... You are a complete fish.
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    Fear and Greed

    This. Algos don't just run by themselves... I know, I've converted from Manual to Algo over time... They have an "operator" = Pro Trader... Who is constantly tweaking, setting parameters... Algos mainly increase a Pro's productivity 10 times... But it's now 10 times harder to make money...
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    Why should anyone want to file tax as a "Trader" Vs. individual? Advantages / disadva

    If you are computerized all your tech... Most car trips you take are "business trips"... If your mom lent you $1,000... Visiting your mom is a "business trip", etc... You can turn almost anything into a "business expense"... But you must have INCOME... and you must DOCUMENT it well. Any...
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    What is the correct way to think analyse this?

    I'm sure any semi-competent 19 yo math type with a PC... Could use what used to be called "data mining"... And today is called "data dredging"... To come up with endless similar results in 100 hours. The problem is Detachment From Reality... The market is not a bunch of data points...
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    Can Canadians open accounts at US retail firms?

    Perhaps the good IB folks are in the phone book, no? I could drive to the General Store and give them a ring. It would be awesome if an IB Account Executive... Came to my trailer and serviced my needs... There are rumors that IB has gone to great pains... To set a new standard in Customer...
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    Marc Faber: Treasurys Are A "Suicidal Investment"

    Zero Hedge making doomsday claims or promoting gold... Is the reason they exist... There have been pretty much dead wrong for 18 months... PermaBears are wrong 90% of the time.
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    Why Does IB Still Not Offer ECN Pegged Orders?

    http://status.interactivebrokers.net/cgi-bin/bb_status.pl
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    Niederhoffer's year end contest! ($2500 prize for 3 best 2011 trading ideas)

    Victor is the World's Greatest Lover... This is a well documented fact... In his many Autobiographical books, articles, and posts... Hammy baby, are you implying 1st hand experience?
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    Can Canadians open accounts at US retail firms?

    This is something new. How can I contact the good IB folks in Canada?
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    Win 7... Win XP Mode?

    Yes, it's mostly for old, proprietary applications... Legacy code is very common in software development... Because it something works, why fix or replace it? I have about 100,000 lines of code written over 25 years... Some of my overnight math routines were written in 1987... Of course...
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    Need tips on developing my own ATS to trade FX

    The OP needs to answer this question for himself: What Competitive Advantage do you have... Over bank traders with decades of experience... And multi-million $$$ tech budgets... And access to large quantities of Inside Information? And also the converse question... What Competitive...
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    Can Canadians open accounts at US retail firms?

    No, it is illegal under Canadian law since circa 2002. But there is a simple way around it... Form a US or offshore corporation... And you'll need a decent accounting firm... To manage all your tax filings... So it's not trivial.
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    Order on both side of same market

    If this is in fact true... There is exactly ONE reason... And that is to maintain artificially large spreads... In order to exploit idiots who trade into these spreads. I find it hard to believe this is legal... But then Chicago more corrupt than Lagos. This kind of thing is unheard of...
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    Learning a language for T4 API

    If you are actually going to do this... (1) Forget about C++, it's always been for high-end professionals. (2) VBA is a subset of VB for Excel and MS Office. (3) VB was discontinued in 2003, VB.NET is the replacement. (4) C# and VB.NET are the same language with different...
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    interactive-brokers real-time liquidation madness

    This market is not illiquid, it's not even a "market"... It seems to exist so that large players can cross size... It looks like there was one 250 contract trade today. This is not meant for retail traders, but for institutions... That have a ** clear arrangement ** with their Clearing...
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