Actually, I speak as someone who has lost a fair bit of money on algorithmic trading. The pattern I’ve observed is consistent, small gains punctuated by sizable

Actually, I speak as someone who has lost a fair bit of money on algorithmic trading. The pattern I’ve observed is consistent, small gains punctuated by sizable losses. That was in a big market, but if the market segment is small enough, then I would certainly grant that your acquaintances could have had that success. Does put a cap on the gains.