NSAV Holding Inc (NSAV)

[shotsky]

You do realize that every trade is recorded permanently, right? It shows who bought, who sold, the price and time. It also shows which mm's were involved.
Collusion would be almost immediately detectable, and be able to be traced back to the principles. Every purchase or sale by an MM is also recorded. Auditing trading behavior is dead simple.
That is not to say that a private group could not have pulled this off. If I and a handful of like-minded traders decided to buy up a ton of some trip company and hold them for a year, we could probably repeat this act. All that it would take is finding the right company, with a low share price, and at least some bright prospects. But, although possible, it is illegal to do.