[falsestprophet]

Sure, even small hedge funds and propriety trading firms are generally working with millions of dollars.

I agree there must be some niches are that are amenable to exploitation by small independent traders (perhaps anything to do with nanocap stocks).

I have not had success finding niches where I thought I would be successful, but I could very well be insufficiently clever.

But trading highly liquid equities on a multi-day timescale (the strategy proposed here) is certainly not prohibitively hostile territory for large, sophisticated buy side operations.