That would cause an fake increase of stock price temporary keeping it artificially higher. Meaning anyone buying would be paying more than the actual value. The next thought would be wouldn't the market correct for this? It doesn't know if I'm going to sell 100,000 at once or 1,000 shares daily for 100 days.
I was thinking that if you possess a lot of shares, your orders are all forced to go through with a several-day (even -month) delay, regardless of the size of your trade.
