Shares of T-Mobile US Inc (NASDAQ:TMUS) continue to hammer against a triple top on the stock chart. So far, the stock has failed to break through. Institutions are selling and smart investors are shorting. The reasoning is not only technical but also based on fundamentals. First, the stock is trading near a 40 P/E, far higher than AT&T (T) or Verizon (VZ). Next, their hot unlimited lure to cell phone customers is being copied by all the other carriers now. The bottom line is, the P/E and chart signals a drop is on the horizon. Expect a pull back to $55.50 in the coming months.