No it isn't. Ford has 4 billion shares outstanding. I can place a buy order for Ford at $1,000/share right now: if it's filled at that price, Ford doesn't insta

No it isn't. Ford has 4 billion shares outstanding. I can place a buy order for Ford at $1,000/share right now: if it's filled at that price, Ford doesn't instantly become a trillion dollar company. Just because you can sell a few shares at a high price doesn't mean someone will buy the rest of the shares at that price. Especially not in illiquid private markets.