Zscaler Inc (NASDAQ:ZS) stock has pulled back sharply from its Nov. 3 three-year high of $336.99, last seen down 0.6$241.86, heading for its 12th loss in the last 14 trading sessions. Now looks like a good time to buy in on the dip, however, as the cybersecurity stock is testing a historically bullish trendline on the charts. Per Schaeffer's Senior Quantitative Analyst Rocky White, ZS is within 0.75 of the 320-day moving average's 20-day average true range (ATR), after remaining above it 80% ...