SAN FRANCISCO — The virtual currency Bitcoin has been swept up in yet another speculative frenzy, pushing its price toward the peak it last reached in late 2013.

The price of Bitcoin has been buoyed by increased interest from places like Venezuela, where the local currency has lost much of its value, and India, where the government recently removed the largest cash notes from circulation.

More broadly, a tilt toward isolationism that has emerged in American and European politics — highlighted by Donald J. Trump’s election victory — has given a new sheen to a currency that can move between countries with little oversight.

“The more there is an expectation for new barriers to be erected, the more there is an expectation that Bitcoin will be valuable for moving money across borders,” said Gil Luria, the director of research at Wedbush Securities.