SANTIAGO, Dec 15 (Reuters) - Chile's IPSA stock index ended up 7 percent on the week on Friday, its highest weekly gain in eight years and coming ahead of Sunday's presidential election, as the price of copper, the country's main export, rose.
There have been no major polls made public ahead of what will likely be a close election, but some analysts believe conservative billionaire Sebastian Pinera, a former president, has a slight edge over center-left candidate Alejandro Guillier.
The IPSA closed up 2.25 percent on the day on Friday. At the unofficial close, the index was up 8 percent on the week and 3.08 percent on the day. (Reporting by Felipe Itturieta; Writing by Caroline Stauffer; Editing by Leslie Adler)