Cal-Maine Foods, Inc. (NASDAQ:CALM) stock rose Wednesday after the egg producer delivered a second-quarter earnings beat, easing investor concerns over falling egg prices even as revenue and profitability slid sharply year over year.The company reported second-quarter earnings per share of $2.13, beating the analyst consensus estimate of$1.94.Quarterly sales of $769.50 million (down 19.4$826.395 million.“With lower egg prices, our increasingly diversified busines ...