>Any HFT who hunts for a sure thing isn't making any money - there are far more 51% gain, 49% loss opportunities than there are sure things. There may be far m

>Any HFT who hunts for a sure thing isn't making any money - there are far more 51% gain, 49% loss opportunities than there are sure things. There may be far more 51/49 opportunities. However, saying that HFTs hunting for sure things isn't making money is far from true. I worked for a UHFT firm that had a winning percentage of more than 95% of the time. The 5% losers had VERY small losses too. All arbitrage trading. Not market making like everyone seems to be focused on in here.