Cleveland-Cliffs (CLF) reached a significant support level, and could be a good pick for investors from a technical perspective. Recently, CLF broke through the 20-day moving average, which 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.CLF could be on the verge of another rally after moving 18.5% higher over the last four weeks. Plus, the company is currently a Zacks Rank #3 (Hold) stock.The bullish case only gets stronger once investors take into account CLF's positive earnings estimate revisions. There have been 2 revisions higher for the current fiscal year compared to none lower, and the consensus estimate has moved up as well.Given this move in earnings estimate revisions and the positive technical factor, investors may want to keep their eye on CLF for more gains in the near future.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 ClevelandCliffs Inc. (CLF): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research