Bank holdings in “extreme” fossil fuels skyrocketed globally to $115bn during Donald Trump’s first year as US president, with holdings in tar sands oil more than doubling, a new report has found. A sharp flight from fossil fuels investments after the Paris agreement was reversed last year with a return to energy sources dubbed “extreme” because of their contribution to global emissions. This included an 11% hike in funding for carbon-heavy tar sands, as well as Arctic and ultra-deepwater oil and coal. US and Canadian banks led a race back into the unconventional energy sector following Trump’s promise to withdraw from Paris, with JPMorgan Chase increasing its coal funding by a factor of 21, and quadrupling its tar sands assets. Chase’s $5.6bn surge in tar sands holdings added to nearly $47bn of gains for the industry last year, according to the report by NGOs including BankTrack, the Sierra Club and Rainforest Action Network (RAN).