Walgreens Boots has been basing since April with a Double Bottom forming from May to August. The stock exceeded the intermittent high, but this breakout did not hold as WAG fell back with a bull flag. The bull flag breakout reversed the short-term downtrend in mid October and WAG is again challenging resistance. I expect a breakout from this large base and would target a move to the lows 60s. A close below 53 would call for a re-evaluation.