Not exactly, because you need to look at depth of market as well. If I find one idiot to buy 1 share of my stock (out of a trillion) for $1, that doesn't mean I

Not exactly, because you need to look at depth of market as well. If I find one idiot to buy 1 share of my stock (out of a trillion) for $1, that doesn't mean I really have a $1T market cap.