13 Best Stocks to Invest In According to Billionaire Ken Griffin

8. Microsoft Corporation (NASDAQ:MSFT)

Citadel’s Stake: $976 million 

Technology giant Microsoft Corporation (NASDAQ:MSFT)’s shares are among the weakest performers in the market in 2026. They are down by 13% year-to-date. The firm was the target of a cybersecurity attack recently after hackers managed to compromise its open source tools to steal AI developers’ passwords. The compromised tools are related to Microsoft Corporation (NASDAQ:MSFT)’s cloud platform Azure, and in response to the breach, the firm restricted access to the affected software. The breach was the second of its kind in recent months, after it followed the breach of Microsoft Corporation (NASDAQ:MSFT)’s open source tool called Durable Task in May.

Microsoft Corporation (NASDAQ:MSFT) currently trades at a forward price-to-earnings ratio of 19.46, which is significantly lower than the broader market’s 30.89. Recently, UBS Piper Sandler reiterated an Overweight rating on the shares and kept a $540 share price target as it praised improvements in the Copilot software.

Impax Global Environmental Markets Fund discussed Microsoft Corporation (NASDAQ:MSFT) in its Q1 2026 investor letter:

“Microsoft Corporation (NASDAQ:MSFT) (Cloud Computing, US) sold off as investors expressed worries about AI-related infrastructure spending and companies’ ability to monetise these investments. The market responded poorly to results, despite Microsoft delivering another very strong quarter with top and bottom-line beats.”