The Mexican peso just took off.

The currency is up by about 1.9% at 18.6649 against the US dollar in early Monday trade, according to data from Investing.com.

FBI Director James Comey informed Congress on Sunday around 3:15 p.m. ET that a review of new emails found in relation to the bureau's investigation into Clinton's use of a private email server had not yielded any reason for charges against the Democratic presidential nominee.

A downwards move on a USDMXN chart indicates that the peso strengthened against the dollar. Investing.com Given that Republican candidate Donald Trump's anti-trade platform could have negative repercussions for the Mexican economy, the currency has become something of a gauge of his prospects over the past couple of months of the campaign.

The peso has had zigzagged around the week leading up to the election, swinging on various poll results.

Relatedly, the US dollar was stronger against the Japanese yen, which is considered to be a safe-haven trade that investors pour into during times of uncertainty in the markets, following the announcement.

The dollar was up by 1.0% at 104.08 against the yen as of 4:05 p.m. ET.