PDF Solutions, Inc. (PDFS Quick QuotePDFS - Free Report) reached a significant support level, and could be a good pick for investors from a technical perspective. Recently, PDFS's 50-day simple moving average broke out above its 200-day moving average; this is known as a "golden cross."

A golden cross is a technical chart pattern that can signify a potential bullish breakout. It's formed from a crossover involving a security's short-term moving average breaking above a longer-term moving average, with the most common moving averages being the 50-day and the 200-day, since bigger time periods tend to form stronger breakouts.

A successful golden cross event has three stages. It first begins when a stock's price on the decline bottoms out. Then, its shorter moving average crosses above its longer moving average, triggering a positive trend reversal. The third and final phase occurs when the stock maintains its upward momentum.

A golden cross contrasts with a death cross, another widely-followed chart pattern that suggests bearish momentum could be on the horizon.

Shares of PDFS have been moving higher over the past four weeks, up 27.6%. Plus, the company is currently a #1 (Strong Buy) on the Zacks Rank, suggesting that PDFS could be poised for a breakout.

Looking at PDFS's earnings expectations, investors will be even more convinced of the bullish uptrend. For the current quarter, there have been 2 changes higher compared to none lower over the past 60 days, and the Zacks Consensus Estimate has moved up as well.

Investors should think about putting PDFS on their watchlist given the ultra-important technical indicator and positive move in earnings estimates.