There have been two previous days (in the last week) where Boeing Co(NYSE:BA) began to form a topping tail, only to surge up in late trading and negate it. A topping tail is a bearish top signal, so it is very impotant for deciding where to sell or short. The definition of a topping tail is a 52 week high or multi-day/week high where the stock reverses from an early surge, closing near the lows of the day. This forms a topping tail and a top signal. Should Boeing Co finally form a topping tail, investors can look to short it for the retrace back to $220.00. View ALL of my trades and Verified performance right now, click here.