Amtech Systems (ASYS Quick QuoteASYS - Free Report) is looking like an interesting pick from a technical perspective, as the company reached a key level of support. Recently, ASYS crossed above the 20-day moving average, suggesting a short-term bullish trend.

The 20-day simple moving average is a popular trading tool. It provides a look back at a stock's price over a 20-day period, and is beneficial to short-term traders since it smooths out price fluctuations and provides more trend reversal signals than longer-term moving averages.

Like other SMAs, if a stock's price is moving above the 20-day, the trend is considered positive. When the price falls below the moving average, it can signal a downward trend.

Shares of ASYS have been moving higher over the past four weeks, up 22.4%. Plus, the company is currently a Zacks Rank #2 (Buy) stock, suggesting that ASYS could be poised for a continued surge.

The bullish case only gets stronger once investors take into account ASYS's positive earnings estimate revisions. There have been 1 revisions higher for the current fiscal year compared to none lower, and the consensus estimate has moved up as well.

Investors may want to watch ASYS for more gains in the near future given the company's key technical level and positive earnings estimate revisions.