Imagine being the typical SpaceX employee over the last few months. Your shares IPO at $135 and within a few days they peak at $225/share (up 67%) before they begin to decline. As of this morning they sit at around $139, or about 3% above the IPO price. Given this, what percentage of your shares would you sell once your lock-up ends? This question isn't just relevant to SpaceX employees, but to…