After reaching an important support level, Builders FirstSource (BLDR) could be a good stock pick from a technical perspective. BLDR surpassed resistance at the 20-day moving average, suggesting a short-term bullish trend.The 20-day simple moving average is a popular investing tool. Traders like this SMA because it offers a look back at a stock's price over a shorter period and helps smooth out price fluctuations. The 20-day can also show 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.Over the past four weeks, BLDR has gained 14.8%. The company is currently ranked a Zacks Rank #3 (Hold), another strong indication the stock could move even higher.The bullish case only gets stronger once investors take into account BLDR's positive earnings estimate revisions. There have been 6 revisions higher for the current fiscal year compared to none lower, and the consensus estimate has moved up as well.Investors should think about putting BLDR on their watchlist given the ultra-important technical indicator and positive move in earnings estimate revisions. Just Released: Zacks Unveils the Top 5 EV Stocks for 2022 For several months now, electric vehicles have been disrupting the $82 billion automotive industry. And that disruption is only getting bigger thanks to sky-high gas prices. Even titans in the financial industry including George Soros, Jeff Bezos, and Ray Dalio have invested in this unstoppable wave. You don't want to be sitting on your hands while EV stocks break out and climb to new highs. In a new free report, Zacks is revealing the top 5 EV stocks for investors. Next year, don't look back on today wishing you had taken advantage of this opportunity.>>Send me my free report revealing the top 5 EV stocksWant 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 Builders FirstSource, Inc. (BLDR): Free Stock Analysis ReportTo read this article on Zacks.com click here.Zacks Investment Research