From a technical perspective, Aldeyra Therapeutics, Inc. (ALDX) is looking like an interesting pick, as it just reached a key level of support. ALDX's 50-day simple moving average crossed above its 200-day simple moving average, which is known as a "golden cross" in the trading world.Considered an important signifier for a bullish breakout, a golden cross is a technical chart pattern that's formed when a stock's short-term moving average breaks above a longer-term moving average; the most common crossover involves 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.ALDX could be on the verge of a breakout after moving 58.3% higher over the last four weeks. Plus, the company is currently a #3 (Hold) on the Zacks Rank.Looking at ALDX's earnings expectations, investors will be even more convinced of the bullish uptrend. For the current quarter, there have been 1 changes higher compared to none lower over the past 60 days, and the Zacks Consensus Estimate has moved up as well.With a winning combination of earnings estimate revisions and hitting a key technical level, investors should keep their eye on ALDX for more gains in the near future. Zacks Names "Single Best Pick to Double" From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all. It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time. This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.Free: See Our Top Stock and 4 Runners Up >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Aldeyra Therapeutics, Inc. (ALDX): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research