Zscaler (ZS Quick QuoteZS - Free Report) is looking like an interesting pick from a technical perspective, as the company reached a key level of support. Recently, ZS broke out above the 50-day moving average, suggesting a short-term bullish trend.

The 50-day simple moving average, which is one of three major moving averages, is widely used by traders and analysts to establish support and resistance levels for a range of securities. Because it's the first sign of an up or down trend, the 50-day is considered to be more important.

ZS could be on the verge of another rally after moving 9.5% higher over the last four weeks. Plus, the company is currently a Zacks Rank #2 (Buy) stock.

The bullish case solidifies once investors consider ZS's positive earnings estimate revisions. No estimate has gone lower in the past two months for the current fiscal year, compared to 2 higher, while the consensus estimate has increased too.

Investors should think about putting ZS on their watchlist given the ultra-important technical indicator and positive move in earnings estimate revisions.