Greek stocks clung onto positive territory yesterday, albeit after a trimming of mid-session gains, as investors await the next batch of second quarter earnings figures to be announced this week. The Athens Exchange’s benchmark general index advanced 0.18 percent to 3,302.57 points. The FTSE/ATHEX 20 blue chip index added 0.25 percent while the FTSE/ATHEX 80 small-cap index underperformed, dropping 1.42 percent. Betting group OPAP and Alpha Bank, Greece’s third largest lender, are expected to announce second quarter figures today. Alpha Bank added 0.26 percent to 18.62 euros and OPAP firmed 0.38 percent to 23.80 euros. Turnover reached 156.9 million euros versus 153 million euros in the previous session.