I think the ceiling is around 12BTC per share. I think we will surpass 6 this week and be halfway to what I'd consider to be the reasonable ceiling. If it goes higher than 12BTC per share then we know it's just a bubble. Big players will sell at around 10BTC per share which is why I put 12 as a ceiling because it's psychological similar to when BTC passed $100 the first time.

Everybody who got in at 2.5-3 are in a position to keep buying more shares. If you're just getting in now at 5BTC a share you may still profit, and anyone getting in at 6BTC is just speculating that it will get to 10. I predict it will go as high as it can go until a big player decides to sell and even if they do sell it only buys us some time, maybe a couple weeks.