In one of the most negative sessions of the last few months, the Greek bourse’s main index saw 6 percent of its value wiped out yesterday, as news of soaring Greek bond yields and foreign reports about debt restructuring made the market even more nervous. The Athens Exchange (ATHEX) general index closed at 1,696.68 points yesterday, the lowest level in 2010, declining by 6 percent from Monday’s close at 1,804.91 points. The blue chip FTSE/ATHEX 20 index gave up 6.85 percent to close at 822.39 points. Investors continued to sell off bank stocks, but Mytilineos was also badly affected (down 12.05 percent). The only blue chip to post notable gains was Marfin Investment Group (up 1.56 percent). As of June 1, the blue chip index will include toy retailer Jumbo instead of Intralot. Turnover amounted to 335.6 million euros.