Well my friend, u've just drawn the wrong analogy here. Perhaps you have little or no idea of large scale software development. No developer can take a piece of

Well my friend, u've just drawn the wrong analogy here. Perhaps you have little or no idea of large scale software development. No developer can take a piece of code with him/her - implications are horrible. Even if they did, the code is probably worthless unless they managed to steal the entire code base. Assuming someone manages to accomplish this, it'll still take time for the damage to occur and by then the theft will be discovered. What these traders do is, from my understanding, far more risky and the chances of someone discovering their 'wrong trade' before the damage is incurred is probably nil. That's why u always hear that the trade lost so much money. U never hear, the trade was about to lose so much money and someone averted it.