The US markets tumbled on the first trading session of the week as investors? fears of the Feds hiking interest rates aggressively sent stocks into freefall. Investors also grappled with earnings season and rising treasury bond yields to start the shortened trading week. Activision Blizzard skyrocketed 25.88% on Tuesday after the video game maker announced it is being acquired by Microsoft for 68.7 billion US dollars in the biggest gaming deal in history. A spotlight on Moderna as shares in the biotech company plummeted 8.8% yesterday despite the company announcing it expects to share data from an Omicron-specific vaccine with regulators in March. Aldi has opened its first till-free supermarket in London that uses the Aldi Shop&Go app to charge customers for their purchases once they leave the store.