Meta Platforms Inc. (formerly Facebook) had a significant market value increase of $197 billion, the largest single-day addition in stock market history.

The surge in Meta's market capitalization followed a strong Q4 earnings report, with a 20% rise in stock price, closing at an all-time high of $474.99 per share.

Meta's impressive quarterly earnings, cost-cutting measures, and increased capital structure efficiency have improved its outlook.

The company announced a $50 billion stock buyback and its first quarterly dividend, signaling financial strength and encouraging investors to stay invested.

Meta continues to invest in artificial intelligence advancements, particularly in generative AI and background technologies for its social media products and ad targeting.

Despite challenges such as workforce reductions and regional bank routs, the stock market rally persisted due to soothing economic data and positive earnings from Meta and Amazon.