From a technical perspective, ArcelorMittal (MT) is looking like an interesting pick, as it just reached a key level of support. MT recently overtook the 20-day moving average, and this suggests a short-term bullish trend.A well-liked tool among traders, the 20-day simple moving average offers a look back at a stock's price over a 20-day period. This is very beneficial to short-term traders, as it smooths out short-term price trends and gives 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.MT has rallied 16.6% over the past four weeks, and the company is a Zacks Rank #1 (Strong Buy) at the moment. This combination suggests MT could be on the verge of another move higher.Once investors consider MT's positive earnings estimate revisions, the bullish case only solidifies. No earnings estimate has been lowered in the past two months, compared to 5 raised estimates, for the current fiscal year, and the consensus estimate has increased as well.Investors may want to watch MT for more gains in the near future given the company's key technical level and positive earnings estimate revisions.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 ArcelorMittal (MT): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research