Short interest on Zscaler surged 49% in the two most recent reporting periods
Cloud security name Zscaler Inc (NASDAQ:ZS) has had a strong start to 2019 -- up 23.6% so far, compared to a slimmer 8% gain for the S&P 500 Index (SPX). There's plenty of skepticism priced into the stock, too, which could keep the wind at ZS' back as it's unwound.

For starters, seven of 11 analysts maintain a "hold" or "worse" recommendation on the stock, while the consensus 12-month price target sits at $44.75 -- below current trading levels. This leaves the door open for upgrades and/or price-target hikes, which could draw more buyers to the table.
Plus, short interest surged 49% in the two most recent reporting periods to 8.29 million shares. This accounts for a healthy 14% of ZS' available float, and would take more than six sessions to cover, at the average daily pace of trading.
Lastly, short-term options are relatively cheap at the moment, too, per the stock's Schaeffer's Volatility Index (SVI) of 50% -- indicating implied volatilities are near the lowest they've been since ZS began trading last March.
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