On Tuesday, global stocks jumped after Donald Trump authorized President-elect Joe Biden's presidential transition process to begin.<br />On Monday, Trump took a significant step toward acknowledging the election result.<br />However, Business Insider reports, he is still convinced he and his allies can continue to contest the outcome.<br />Another key factor driving the boost is Biden's planned nomination for former Federal Reserve chair Janet Yellen as Treasury Secretary.<br />AstraZeneca's vaccine is helping drive oil prices to their highest levels since March.