Yangtze Optical Fibre And Cable is trading 4.06% down at HK$160.80, amid broader pressure on Hong Kong technology shares; no company-specific announcement has been identified to explain the move. - The Hang Seng fell 1.4% on October 8 as risk aversion, rising Treasury yields and Brent crude above US$100 weighed on sentiment; technology shares were among the biggest drags. - Elevated yields and energy-driven inflation concerns also pressured global growth-oriented technology stocks.