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Yes, a "marketable limit order" is a limit order like an in-the-money-put is a put. The marketable part is in the context rather than being coded differently.

A spread/pair-trade is still a directional bet on whatever is causing the anomalous spread. For example, new management/new technology. Is the share price being hyped or has the game changed. This is especially relevant to the timing of the trade. "Deep understanding" is what is needed...

I think that there is some misunderstanding in this thread. I believe that Bone is talking about HFT and Lasner is talking about position trading time frames. Here is a list of inversely correlated futures/forex pairs. They have a Rank Correlation of daily return over the last 10 years of...

I like the strategy of trend following by straddling the market with stop orders in that it allows the market to tell you which way the break-out will happen. Unfortunately, on every back-test profitable system on which I have tried this, it has lowered profits and extended losses so I stopped...

I think that this is an important point. Rule-of-law is an important reason why businesses have grown in the US and an important reason why so much wealth resides here. Capitalism knows nothing of morals, ethics, dignity, or often, even of tomorrow. I know that people think that the free...

Although there have been times that traders have run-the-stops, I don't think that this is likely to be a consistent problem. More likely, it is your trading strategy. Buying at the high/selling at the low is the hallmark of a beginning trader. Have you back tested your strategy?

Nothing against, good old cmd or powershell, but I usually write such maintenance scripts in Perl or VBScript(cscript). Perl makes it very easy to do list and date comparisons. VBScript is good if you want to get at performance metrics.

No specific numbers from me, but I remember several data vendors were working on building Amazon cloud-smart access. Remember that latency as well as bandwidth matters. For HFT or even any trading that justifies a collocated server, don't you want guaranteed resources? One would hate to...

Does that include jobs bought and paid-for with US taxpayer dollars? http://www.wbur.org/2009/11/05/evergreen-china

You are right, Ed, that the distinction is rather pointless. Sole proprietorships and partnerships before the invention of corporations were no better. On a side note, I had read that the justice department wanted to get away from criminal prosecution of companies. A company has...

Well put, but I agree with some others that taxation is only part of the problem.

This is an important point. China, and the other developing economies in question, are growing without intentional restraint. When I studied economics in the '80s, it was explained that the world is finite, and that the western economies wanted modest limited growth for the foreseeable future...

I oppose outsourcing firstly on its own merits, its inability to deliver, which is too big a topic to throw into the discussion. I agree with JJF's point that computer automation/productivity boosting is a closely related topic which doesn't get as much attention. For example, we have seen a...

Not as a trader, but as a person with consulting/contracting/1099 employment, the issue with the bank is to document your income as a business. The bank is concerned with meeting qualification guidelines so that the mortgage is resellable. They are not overly concerned with IRS regs. Give...

It is a little hard to believe that a prop trader needs help finding Yahoo & Google, but here are a few sites. Real-Time http://www.google.com/finance?q=NYSE:WTS http://www.quote.com/us/stocks/quote.action?s=MSFT Partial Real-Time http://www.quote.com/us/stocks/quote.action?s=VHC...

Opening a TCP connection to see if it connects is sometimes referred to as a TCP-ping. A word of caution about TCP-pings. Some servers, such as MySQL, keep track of failed authentication attempts. Remember that from the server's point of view, it accepted the socket and began the...

I have done extensive network redundancy testing for our colocation environment. This included Windows 7 and Windows 2008. For both of these environments, the NetworkAvailabilityChanged event will fire on a failure in the cable or first switch. Failure of any switch or connection passed this...

You make a valid point, but I don't think that it is so conclusive. The high rate of unemployment relates to the long expected delay in finding reemployment and the high uncertainty in that delay. Certainly this should be factored into ones stop-loss point (if OP find himself with only XX...

One way to protect your intellectual property is to break the task into distinct pieces which are done by disconnected people. Let a professional build the interface to the platform around a bogus system which is constructed to have the same inputs. For example, if you want to do a...

It is possible to plot correlation on daily charts. Many packages allow two or more data series on a chart and offer a correlation function between them. I don't understand what I am missing.