Its your money and you can sellHowever in my opinion those who sell and then come on board and post/imply that its right time to sell are looking for validation that what they did was the right move, and go on to explain the doomsday for Bombardier.
Its your money do as you wish, but when you go on to try to justify your reason for selling, then it is you who is looking for approval from others. Similar but not to the same extreme are buyers. But its the seller who come out looking desperate.