Retail stock Macy's Inc (NYSE:M) was last seen up 1.1% at $12.59, and running into several layers of resistance on the charts. The$12.60 level has kept a lid on gains for the last couple months, while overhead pressure at the 100-day moving average has moved in as well -- a trendline that has preceded downturns in the past. Per Schaeffer's Senior Quantitative Analyst Rocky White, the stock is within 0.75 of the 100-day moving average's 20-day average true range (ATR), after spending at least 80% of the las ...