ZS gapped and broke above a neckline "zone" (142 - 145) on 2nd June, eventually hitting a high of 162.67 before retracing all the way back to the neckline. The stock is still in the early stage of an uptrend as it is now trading above it's 200 day moving average (with a golden cross that happened last Thur).
"Breakup and retest of a neckline" often provides a 2nd opportunity to long as stock rebounds back above the neckline. However, in ZS' case, the rebound that followed after the initial retest of the neckline was feeble at best. After whipping around the neckline for slightly more than a week, there was a sudden more aggressive sell off last Thursday (6th Jul) as it attempted to close the gap @ 135 that formed just prior to the breakup. The gap closing mission did not succeed as it appeared bulls came back in force resulting in the formation of a small pinbar (bullish) by the day's close.
The trigger to long however, came only this morning as ZS began to rise above the neckline decisively. The bulls appear to be back in control again with today's strong bullish candle thus far (a variation of "morning star" formation) . Currently stop loss should be placed just below the mini pin bar that formed on 6th Jul (ie under 138). I suspect we won't see anymore attempt to close the gap @ 135 in the near future (although nothing is guaranteed!)
Disclaimer: Just my 2 cents and not a trade advice. Kindly do your own due diligence and trade according to your own risk tolerance and don't forget that money management is (probably the most) important! Take care and Good Luck!