hello, i have a stock in my 401k (PAG) penske auto. yesterday at the opening 175k shares and a big pop, today 74k shares at the opening and the same thing, 2 days & 2 topping tails what is going on ? and closed around the 5-8 moving avg. i follow this thing for 10 plus years now and have never seen this before. please help me to understand . thanks tommy