ZScaler at volume support with possible upward catalyst

ZScaler plummeted last week after the company issued 2020 earnings guidance well below Wall Street's expectations. The company's fourth-quarter earnings handily beat Street expectations and its revenue guidance is in line with expectations, but it forecast earnings of only 12-15 cents per share versus Street expectations of 19 cents per share. In part that's because of the high cost of sales and marketing, which account for a whopping 57% of revenue!

The stock has significant support around $49-50, and on Tuesday it announced a product collaboration with Crowdstrike. Like ZScaler, Crowdstrike also took a hit recently due to earnings guidance below expectations. The collaboration could serve as a catalyst for both companies, although it probably won't translate into revenue anytime soon. Analysts consider ZScaler's evaluation to still be pretty high, with a price-to-sales ratio of 16.

A break of my red trend line would be bullish for the stock, but I'd like to see a further pullback to the stronger volume support at 39.62 before entry.