I wouldn't call it "Tanking" and it certainly doesn't deserve to be all in BOLD.
JPM goes up and down like this all the time. It went up about this same amount yesterday and is now settling right back down. In the last few months it has dropped to about the $41 range on several occassions.
Don't make a big deal out of nothing. Every couple of weeks, somebody makes this same type of post and it always means nothing. The drop is in an acceptable range for them.