Wall Street Journal: JD.com reports Q1 revenue up 4.9% YoY to $46.5B, above ~$45.8B est., and adjusted net profit down 42% YoY to $1B, amid a fierce food delivery battle in China  —  JD.com JD 1.33%increase; green up pointing triangle returned to the black in the first quarter, in a sign the Chinese e-commerce giant …