Here are four stocks with buy rank and strong momentum characteristics for investors to consider today, November 19th:Alpha and Omega Semiconductor Limited AOSL: This company that designs, develops, and supplies power semiconductor products has a Zacks Rank #1 (Strong Buy) and witnessed the Zacks Consensus Estimate for its current year earnings increasing 19.7% over the last 60 days. Alpha and Omega Semiconductor Limited Price and Consensus Alpha and Omega Semiconductor Limited price-consensus-chart | Alpha and Omega Semiconductor Limited Quote Alpha and Omega Semiconductor’s shares gained 40.1% over the last one month compared with the S&P 500’s growth of 4.9%. The company possesses a Momentum Score of A. Alpha and Omega Semiconductor Limited Price Alpha and Omega Semiconductor Limited price | Alpha and Omega Semiconductor Limited Quote Fulgent Genetics, Inc. FLGT: This company that provides testing and genetic testing services has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 29.9% over the last 60 days. Fullgent Genetics Price and Consensus Fullgent Genetics price-consensus-chart | Fullgent Genetics Quote Fulgent Genetics’ shares gained 9.9% over the last one month. The company possesses a Momentum Score of B. Fullgent Genetics Price Fullgent Genetics price | Fullgent Genetics Quote Ameresco, Inc. AMRC: This company that provides comprehensive energy services has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 11.7% over the last 60 days. Ameresco, Inc. Price and Consensus Ameresco, Inc. price-consensus-chart | Ameresco, Inc. Quote Ameresco’s shares gained 38% over the last one month. The company possesses a Momentum Score of B. Ameresco, Inc. Price Ameresco, Inc. price | Ameresco, Inc. Quote Saia, Inc. SAIA: This transportation company has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 15.7% over the last 60 days. Saia, Inc. Price and Consensus Saia, Inc. price-consensus-chart | Saia, Inc. Quote Saia’s shares gained 33% over the last one month. The company possesses a Momentum Score of B. Saia, Inc. Price Saia, Inc. price | Saia, Inc. Quote See the full list of top ranked stocks hereLearn more about the Momentum score and how it is calculated here. More Stock News: This Is Bigger than the iPhone! It could become the mother of all technological revolutions. Apple sold a mere 1 billion iPhones in 10 years but a new breakthrough is expected to generate more than 77 billion devices by 2025, creating a $1.3 trillion market. Zacks has just released a Special Report that spotlights this fast-emerging phenomenon and 4 tickers for taking advantage of it. If you don't buy now, you may kick yourself in 2022.Click here for the 4 trades >>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 Ameresco, Inc. (AMRC): Free Stock Analysis Report Alpha and Omega Semiconductor Limited (AOSL): Free Stock Analysis Report Saia, Inc. (SAIA): Free Stock Analysis Report Fullgent Genetics (FLGT): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research