Bonds from Indonesia's Indosat Palapa and State Bank of India gained on their Asian debuts on Friday, spurred by the firmer tone in broader financial markets and strong demand from investors. The Asia ex-Japan iTraxx investment-grade index narrowed 4 basis points (bps) to 118/122 as gains in equities spurred buying of the region's debt, traders said. The index has tightened around 8 bps so far this week, on track for its third weekly decline. Indosat Palapa, a unit of Indonesia's second-largest telephone operator PT Indosat, sold a $650 million 10-year bond on Thursday at 7.375 percent, within its guidance. The debt traded at 104.375/104.625 cents on the dollar on Friday versus the issue price of 99.478, traders said. The deal attracted $10.5 billion in orders, a source close to the deal said. Investors from Asia took 40 percent of total sales, the US 33 percent and Europe 27 percent.