Tokyo, July 17 (Jiji Press)--Japan's benchmark Nikkei 225 stock average plunged over 2,900 points Friday morning due to selling of issues related to semiconductors and artificial intelligence following overnight falls in their U.S. counterparts. The index of 225 major issues listed on the Tokyo Stock Exchange's Prime section ended the morning session at 63,896.48, down 2,939.06 points, or 4.40 pct, from Thursday's closing. It slipped below 64,000 for the first time in about a month on an intraday basis. In the Tokyo market, memory chip maker Kioxia Holdings and other key Nikkei component issues came under selling pressure. "We can't help thinking that the boom in generative AI-related stock is about to end," an official of a bank-affiliated securities firm said. END [Copyright The Jiji Press, Ltd.]