After reaching an important support level, Amtech Systems (ASYS Quick QuoteASYS - Free Report) could be a good stock pick from a technical perspective. ASYS surpassed resistance at the 20-day moving average, suggesting a short-term bullish trend.

The 20-day simple moving average is a well-liked trading tool because it provides a look back at a stock's price over a 20-day period. Additionally, short-term traders find this SMA very beneficial, as it smooths out short-term price trends and shows more trend reversal signals than longer-term moving averages.

The 20-day moving average can show signals that are similar to other SMAs as well. 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.

ASYS has rallied 27.8% over the past four weeks, and the company is a Zacks Rank #1 (Strong Buy) at the moment. This combination suggests ASYS could be on the verge of another move higher.

The bullish case solidifies once investors consider ASYS's positive earnings estimate revisions. No estimate has gone lower in the past two months for the current fiscal year, compared to 1 higher, while the consensus estimate has increased too.

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