Greek stocks advanced for the fourth straight day yesterday, the longest run of advancing sessions in 2010, as betting company OPAP outperformed, jumping more than 4 percent. The Athens bourse’s benchmark general index added 0.52 percent to 1,484.13 points, trimming losses for the week to 0.94 percent. The blue chip FTSE/ATHEX 20 index rose 0.95 percent to 710.85 points. OPAP soared 4.62 percent to 12.24 euros after news that its agents had called off strike action planned to take place during the World Cup. Brokers described the news as positive, saying that a strike would have «severely burdened» the performance of OPAP’s fixed-odds betting game Pame Stoichima, a key source of its revenues. Banks advanced 2.35 percent. National Bank moved ahead 2.11 percent to 12.24 euros and Eurobank added 3.68 percent to close at 3.94 euros. Bank of Cyprus rose 3.64 percent to 3.42 euros. On the downside, Coca-Cola Hellenic dropped 2.81 percent to 17.27 euros and OTE telecom gave up 1.61 percent to end at 5.51 euros. Turnover reached 91.9 million euros.