HCA Healthcare (HCA Quick QuoteHCA - Free Report) reached a significant support level, and could be a good pick for investors from a technical perspective. Recently, HCA broke through the 20-day moving average, which suggests 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.

Shares of HCA have been moving higher over the past four weeks, up 16.3%. Plus, the company is currently a Zacks Rank #3 (Hold) stock, suggesting that HCA could be poised for a continued surge.

The bullish case only gets stronger once investors take into account HCA's positive earnings estimate revisions. There have been 8 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 HCA for more gains in the near future.