Wall Street stocks deepened their losses Monday, and Tokyo had its worst day in 13 years as panic spread across trading floors over fears of recession in the United States. Wall Street’s tech-heavy Nasdaq Composite index tumbled 6.3 percent at the open, with the S&P 500 falling 4.2 percent and the Dow dropping 2.7 percent. Major European indices were down around three percent in afternoon trading. Tokyo’s Nikkei sank more than 12 percent on its worst day since the 2011 Fukushima crisis. It also suffered its biggest-ever points loss, shedding 4,451.28. A weak US jobs report on Friday triggered …