After reaching an important support level, Extra Space Storage (EXR Quick QuoteEXR - Free Report) could be a good stock pick from a technical perspective. EXR surpassed resistance at the 20-day moving average, suggesting a short-term bullish trend.

The 20-day simple moving average is a popular trading tool. It provides a look back at a stock's price over a 20-day period, and is beneficial to short-term traders since it smooths out price fluctuations and provides more trend reversal signals than longer-term moving averages.

Like other SMAs, 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.

EXR has rallied 6.4% over the past four weeks, and the company is a Zacks Rank #2 (Buy) at the moment. This combination suggests EXR could be on the verge of another move higher.

Looking at EXR's earnings estimate revisions, investors will be even more convinced of the bullish uptrend. There have been 5 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 EXR for more gains in the near future.