DexCom (DXCM Quick QuoteDXCM - Free Report) is looking like an interesting pick from a technical perspective, as the company reached a key level of support. Recently, DXCM crossed above the 20-day moving average, suggesting 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.

Similar to other SMAs, if a stock's price moves above the 20-day, the trend is considered positive, while price falling below the moving average can signal a downward trend.

DXCM has rallied 7.6% over the past four weeks, and the company is a Zacks Rank #3 (Hold) at the moment. This combination suggests DXCM could be on the verge of another move higher.

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