Alpha and Omega Semiconductor (AOSL Quick QuoteAOSL - Free Report) reached a significant support level, and could be a good pick for investors from a technical perspective. Recently, AOSL broke through the 20-day moving average, which suggests a short-term bullish trend.

The 20-day simple moving average is a popular investing tool. Traders like this SMA because it offers a look back at a stock's price over a shorter period and helps smooth out price fluctuations. The 20-day can also show 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.

Over the past four weeks, AOSL has gained 32.8%. The company is currently ranked a Zacks Rank #2 (Buy), another strong indication the stock could move even higher.

Once investors consider AOSL's positive earnings estimate revisions, the bullish case only solidifies. No earnings estimate has been lowered in the past two months, compared to 2 raised estimates, for the current fiscal year, and the consensus estimate has increased as well.

With a winning combination of earnings estimate revisions and hitting a key technical level, investors should keep their eye on AOSL for more gains in the near future.