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I'm a former high frequency trader. And following the tradition of G.H. Hardy, I feel the need to make an apology for my former profession. Not an apology in the sense of a request for forgiveness of wrongs performed, but merely an intellectual justification of a field which is …
In a previous post I discussed the mechanics of HFT. If you haven't read it, go read it now. Now I'll discuss it's social utility and cost. About the title Many people were misled by it, and this wasn't my intention. I was merely alluding to the book by Hardy …
In a fairly popular blog post, Raganwald advocates against using various heuristics while filtering out resumes. For the most part, I agree with him. Since it's hard to find good programmers, false negatives are very costly compared to the cost of a false positive (a wasted interview). But I have …
In the good old days before the computer revolution, stocks were generally priced by traders using pencil and paper. Analysts would read news, study corporate financials, and then give ideas to traders. Trading happened in a physical trading pit. When a large player (Goldman Sachs, J.P. Morgan) wanted to …