If you’re wondering what caused that moderate jump in Twitter’s stock price earlier today, it probably has something to do with the fact that the company will be making Jack Dorsey its CEO. The co-founder and former CEO has been serving as Twitter’s interim CEO for a few months now following Dick Costolo’s decision to step down, but a Recode is reporting that his position is going to become a permanent one. The announcement is expected to be made as soon as tomorrow, and clearly investors are liking the decision.