I will share with you my edge in stock index futures. It always goes unmentioned in a thread such as this but it is no secret and anyone who scalped on Level II during the go-go days will know what I mean. The edge is the ability to take liquidity ahead of others, usually much larger players. It is a form of front running, which another poster mistakenly believes consists of only the illegal kind. This edge is available to anyone but to exploit it requires externals, which can be readily obtained, and internals - knowledge, skill and experience - that must be built up to a level of sufficiency.