My speculation (and this is all speculation at the end of the day to some degree) is I also think the success of other companies impact each other, such as the

My speculation (and this is all speculation at the end of the day to some degree) is I also think the success of other companies impact each other, such as the recent successful SpaceX abort test. For homework one night I will run an analysis showing the rise and fall of Tesla and SpaceX stock over each other mapped to positive news. I am hypothesizing there is a correlation.