Greek stocks inched up yesterday on low volume, with investors still waiting for news from Brussels about a possible aid package for Greece and the impact that may have on borrowing costs and the broader economy. The Athens bourse’s benchmark general index added 0.36 percent to 2,123.18 points. The blue chip FTSE/ATHEX 20 index rose 0.28 percent to 1,061.83 points. Betting group OPAP jumped 3.96 percent to 16.79 euros and pharmaceuticals group Alapis gained 2.13 percent to 0.48 euros. Refinery company Hellenic Petroleum underperformed, dropping 3.34 percent to 7.06 euros. Banks firmed 0.18 percent, supported by a 1.67 percent advance in Piraeus Bank that ended at 6.70 euros. Turnover eased to 99.5 million euros, down from Friday’s 133 million.