Here are three stocks with buy rank and strong momentum characteristics for investors to consider today, September 9:Affirm Holdings, Inc. (AFRM) : This payment network company has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 43.1% over the last 60 days.Affirm Holdings' shares gained 26.2% over the last three months compared with the S&P 500’s advanced of 0.9%. The company possesses a Momentum Score of A.Cerence Inc. (CRNC) : This AI-driven mobility sol ...