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you say that there are no market making firms?

Market maker will let you do that when stock is falling; you buy at bid price and sell it lower at ask price on reversal; no problem

This is for small cap companies with low liquidity. HFT is not interested in those anyway. By the way learn what HFT is and then use that term. The only thing that is not changing is that retail investor will pay for it.

You provided some information and a lot of misinformation. Unless you do not file W-8 stating that you are not US person for tax purposes your broker is not deducting any US taxes (aside from exchange, SEC fees etc.). The reasons brokers do not accept foreign persons are multiple and very...

It is really basic: income (including from trading) and capital gains (short/ long term) are completely two different things.

as already stated trading as income (trader) is different from capital gain (investor) basically money (earned) is taxed and movement and investment of capital is not (yet)

The reason is that you see 2 different things and want to treat them as one. One is capital and the other one is money. US markets are based on the principle of free capital flows including cross-border flows. Hopefully it will stay like that and any restrictions on capital flows like...

I did not see any evidence that AMD might be unreliable. However latest AMD processors are not as good as Intel in terms of speed and thermal characteristics. Modern compilers optimize better for Intel. Motherboards and chipsets are not as advanced as the ones for Intel because...

Goldman and JP Morgan will be exempt from any such taxes. CEPR is funded from tax money and those pseudo economists are talking their book. Before raising new taxes lets check what happens with tax money currently collected.

Not easy answer; first how data is getting to you - same network, router, computer, firewalls, antivirus programs etc? where is data server located for each - ping and trace route it. what software is being used - for example iqfeed runs its own agent on your machine decompressing data and...

Latency is networking term regarding time delay for network processing and transmission that can be measured by pinging remote server, trace routing etc. If you ping IqFeed server round trip should be from around 100 to 200 ms on average but that is not all there is to latency you are...

IB API: MFC (C++) ActiveX (.Net: C++/CLI, VB, C#) C++ Posix Native C# API

MFC (Microsoft foundation classes) are only distributed with VS Professional or higher. I do not know LS API but MFC is programming layer over Win 32 API. Accessing Win 32 API directly is another option. It is not recommended unless you know what you are doing and it is a lot of work plus it...

you cannot beat them; time to join Communist Party of Amerika or you end up in labor camp.

One more thing about orderStatus(): please check all API release notes because new additions have been made to IB String order status like apicanceled etc. (check exact spelling); it is not shown in current API guide.

Order status is a callback after you submit your order and it is identified by order id (programmer keeps track of order id). It returns average fill price and last filled price, order status, quantity filled, remaining etc. Programmer should keep track what was the initial order type...

Thank you. I was not aware such tools exist. I just started looking at Python because books on math/data analysis/science with python example code are better than matlab books not mentioning the cost of owning matlab.

This is exactly why I tried python for rich libraries and plotting. However, it still takes more work than I would expect to switch to Python. Looking at the Python code I do not see much advantage over what I am doing in .Net. But the bottom line is that I was looking for something super...

Where to go? good question at the right time; One potential headache with Windows is Windows platform future. Microsoft is abandoning desktop in favor of COM based Win RT with many limiting factors regarding developers, program interaction with machine. Win Rt is closed platform (no more...

TWS API 9.69 has both Posix C++ sample (cross platform) and Visual C++ (MFC based project). Starting with 9.69 there is new type of installation procedure that extracts files to TWS API folder with three sub-folders bin, samples and source. In samples folder look at TestActiveX_VC folder for...