SQUAWK BOX, TUESDAY 29TH DECEMBER, 2020

President Trump signs off on the $900bn virus stimulus package, sending U.S. markets soaring to fresh record highs. In Brussels, EU ambassadors unanimously approve the Brexit trade deal with British MPs set to vote on the agreement tomorrow. Alibaba shares rebound in Hong Kong after losing almost €116bn in the previous two sessions as Chinese regulators crackdown on Jack Ma's empire and its subsidiary Ant Group. And in the UK, the AstraZeneca-Oxford University Covid-19 vaccine is due to be approved as the Europe-wide vaccination rollout gathers pace.