Pakistan, July 19 -- Pakistan Stock Exchange's (PSX) benchmark KSE-100 shed 68.14 points on Friday, showing a negative change of 0.05 percent, closing at 138,597.36 points against 138,665.50 points last trading day. A total of 609,443,979 shares were traded during the day as compared to 780,007,655 shares the previous trading day, whereas the price of shares stood at Rs 31.624 billion against Rs 39.975 billion on the last trading day. As many as 478 companies transacted their shares in the stock market, 120 of them recorded gains and 331 sustained losses, whereas the share price of 27 companies remained unchanged. The three top trading companies were Pak International Bulk with 53,113,672 shares at Rs 10.14 per share, First Dawood Prop wi...