Yesterday’s rollercoaster bourse session, the first since last Thursday, saw Greek stocks end their ride on a high unlike any since early January. The Athens Exchange (ATHEX) general index rose to 1,901 points yesterday, a 1.01 percent increase over Thursday’s close. It had shown gains of 4.09 percent at mid-session which later gave way to losses of 0.79 percent before rebounding to just over the 1,900-point mark. The blue chip FTSE/ATHEX 20 index expanded by 0.79 percent to end at 972.06 points. EFG Eurobank registered the greatest gains among blue chips (5.93 percent), followed by Piraeus Bank (3.45 percent) and Public Power Corporation (3.29 percent). Motor Oil registered the biggest losses (3.79 percent). Turnover soared to 360 million euros from a daily average of 229 million euros last week.