Quote from FB123:
I really don't think it's going to happen, but it doesn't hurt to fight it anyways. But just in case it DOES actually happen, it might end up actually having some advantages. A very small tax that eliminates HFT but doesn't hurt intraday traders may cause the markets to actually become easier to trade, as spreads widen, volatility increases, and the noise level is reduced. It really depends on exactly what they would come up with as a tax - if it's too large it would kill us, but if it's very small it might actually help in some ways by getting rid of the bots. There's no way they could give an exception to ANY HFT firms if they passed this tax, because it would just be too obvious and would be reported instantly.