Peru’s currency and stocks tumbled after incomplete results of Sunday’s presidential runoff showed the leftist candidate gaining momentum even as he trailed by a thin margin in the count, Bloomberg News reported. The sol headed to its biggest drop in more than a decade at one point and the S&P/BVL Peru General Index fell as much as 6.8%, the most since November, with mining companies and financial firms among the hardest hit. Overseas bonds edged lower in light trading while the cost to insure against a default climbed. Analysts were left to scour incomplete vote tallies for hints at who had the advantage, after investor favorite Keiko Fujimori saw her early lead over leftist opponent Pedro Castillo fade overnight and in the early morning. With almost 93% of votes counted, Fujimori had 50.1% support to 49.9% for Castillo, a former school teacher turned union organizer from the Peruvian highlands. “The country is pretty much split down the middle,” said Alfredo Torres, director of Ipsos Peru. An unofficial quick count published earlier by Ipsos gave Castillo a 0.4 percentage point advantage over Fujimori, within the margin of error, while an Ipsos exit poll after Sunday’s voting showed Fujimori with a slight lead. Read more.