Greek stocks ended marginally higher yesterday, boosted by gains in betting company OPAP. The Athens bourse’s benchmark general index added 0.17 percent to 1,527.62 points, bringing gains for the week to 5.27 percent. The blue chip FTSE/ATHEX 20 index eased 0.16 percent to 726.16 points. OPAP led the blue chip winners, adding 2.55 percent to end at 11.24 euros. Banks slipped 0.69 percent but had a good week overall, rising 6.79 percent over the last five sessions. National Bank firmed 0.83 percent to 9.68 euros while peer Alpha gave up 0.68 percent to 4.37 euros. Cement company Titan underperformed, falling 2.29 percent to 16.22 euros. Athens-based brokerage Euroxx initiated coverage on Titan with a 19-euro-per-share price target and an overweight rating. Jeweler Folli Follie advanced 0.56 percent to 18.10 euros. Hellenic Exchanges advanced 2.24 percent to 4.57 euros and lottery systems provider Intralot ended at 2.92 euros, up 2.10 percent for the session. Turnover reached 88.7 million euros.