About meDiscounted Cash Flow (DCF) is the best method to valuate stocks. Future cash flow is discounted to the present day. P/E ratio only shows PAST performance. Some use forward P/E ratio however it is incorrect. The correct method is DCF.
If bullish trend continues GILD's mean price can hit $130 by EOY, %20 upside in 3 months.
Lowest P/E was in April at 14.64. Projected E14 at $8.5 implies minimum safe price on multiples is $8.5 * 14.64 = $124.44.