From a technical perspective, Quanex Building Products NX is looking like an interesting pick, as it just reached a key level of support. NX recently overtook the 50-day moving average, and this suggests 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.Over the past four weeks, NX has gained 5.6%. The company is currently ranked a Zacks Rank #2 (Buy), another strong indication the stock could move even higher.The bullish case solidifies once investors consider NX'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 may want to watch NX for more gains in the near future given the company's key technical level and positive earnings estimate revisions.Discover Today’s Top StocksThe top 5% of stocks get the coveted Zacks Rank #1 (Strong Buy) rating. With its average gain of +25.4% per year since 1988, it easily outperforms the Zacks Rank #5 (Strong Sell) gain of just +3.1% by 8X. So it's easy to understand why checking this list is a smart way to start each trading day.See Stocks Now >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Quanex Building Products Corporation (NX): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research