I've built one but I've had an average of 125,000 'shares' in my portfolio for the past month because i've been selling at the same rate i was buying (1000 a day).
how do people invest more than 2 mil in the market? should i just stop selling?

the problem is that you only buy 1000 a day but by the time you have like 2 mil in there, there's usually always some stock going for 50 or 60 and you usually have around 4000 in it so you end up selling at the same rate you buy