South Korea's antitrust regulator is investigating U.S. electric car maker Tesla Inc (TSLA.O) over allegations the company exaggerated the specifications of its batteries, an official at the Korea Fair Trade Commission (KFTC) said on Tuesday.

Dow Jones Industrial Average, S&P 500 and Nasdaq Composite all rallied on Tuesday. Russian military units will start returning to permanent bases after completing drills near Ukraine border. Russian President Vladimir Putin said Tuesday he was open to security discussions with the West on negotiating the crisis.

Berkshire Hathaway bought about $1 billion worth of shares in Activision Blizzard. The company jumped in before Microsoft agreed to buy the video-game publisher. Berkshire owns 14.66 million shares valued at $975 million as of the end of 2021. Bill Gates, the co-founder and former CEO of Microsoft, will step down from the boards of Berkshire and Microsoft in 2020.

Roblox is a children's game platform which allows users to create and play games together. It's one of the most popular games in the world, with two-thirds of US children using it. In 2020, Robl Rox told Bloomberg that two- thirds of all US children between the ages of nine and 12, use the game.

BlockFi agrees to pay $100 million to settle charges related to its popular crypto lending product. The company touts itself as a bank-like platform for crypto users. It offers a popular savings product that lets clients accrue interest on their digital currency holdings. Bitcoin and other digital assets are not regulated.

Intel Corp. is close to a deal to buy Israeli chip company Tower Semiconductor Ltd. for nearly $6 billion, according to people familiar with the matter, bolstering a plan to make more chips for other companies. A deal could be unveiled as soon as this week, assuming the talks don’t fall apart, the people said.

Shift4 founder Jared Isaacman has unveiled a Polaris Program that will include ‘up to’ three crewed SpaceX flights. The first, Polaris Dawn, is planned for the fourth quarter of 2022 and should include the first commercial spacewalk. The program will also aim for the highest-ever Earth orbit and conduct health research.

Apple has been fined €5 million by the Dutch antitrust watchdog for not complying with an order to allow local dating apps to use non-Apple payment tech. The regulator says Apple is applying ‘unreasonable’ conditions to local dating app providers. Apple’s total fine, including earlier penalties for failing to comply, now stands at €20 million. The fine could increase further if Apple fails to meet the regulator’S demands.

Instagram is adding a new way for people to interact with Stories. Starting today, you can send a private like when someone shares an image or video that catches your eye. Previously, the only way to respond to a Story was to either send the creator a direct message.

Semiconductors shortage has caused problems for the automotive industry. Toyota in particular is struggling due to the shortage, while rival Nissan is performing better than expected. Toyota's global sales forecast for the current fiscal year ending on March 31 is expected to tumble. The company downgraded its global sales and production outlooks following a decline in operating profits.

Microsoft researchers have built an AI model that can identify when medical treatments meant to help patients actually end up harming them. The model, Dead-end Discovery, uses the reinforcement learning ML framework – where an agent learns from trial and error. The researchers applied their model on real-world medical data that was publicly available.

China's internet giants are investing in the metaverse, the latest buzzword in internet technology. It's a term with no concrete definition, but largely taken to mean virtual worlds that people will be playing and living in. U.S. firms like Facebook parent Meta are going all-in on the concept, while Chinese firms are more cautious.