Following Castillo's surprising success in the first round of elections, the S&P/BVL Peru General Index fell by 3.2% and the Peruvian sol saw its value drop 1.7%, its biggest loss since December 2017 during the first impeachment process against Pedro Pablo Kuczynski;[51][52] in the week before the run-off vote, the sol continued to post historical lows against the U.S. dollar.[53]