Stock Market Summary – March 06, 2026

Tech giant Amazon has announced that AWS customers can continue using artificial intelligence technology from Anthropic in work outside defense, following the federal agency labeling Anthropic a “supply chain risk.” Furthermore, Google and Microsoft recently stated they will continue offering Anthropic’s technology to clients, excluding for defense work. Amazon invested $8 billion in Anthropic in 2023, less than Google who invested an additional $1 billion to its previous $2billion stake.

The Trump administration has announced a $20 billion reinsurance program for oil tankers and other maritime traffic in an attempt to kickstart vessel movement through the Strait of Hormuz. U.S. crude oil prices surged 12%, reaching over $90 per barrel as Persian Gulf tanker traffic remains slow due to the ongoing Iran war.

Federal Reserve Governor Stephen Miran suggested that a drop of 92,000 in nonfarm payrolls in February provides reasoning for further interest rate cuts by the central bank.

Berkshire Hathaway returned to share buybacks and CEO Greg Abel personally purchased $15 million of the company’s stock and committed to using his after-tax salary for annual share purchases.

Among the biggest winners in midday trading were Marvell Technology whose strong quarterly results were driven by AI demand, Day One Biopharmaceuticals who surged over 65% following its acquisition by Servier, and Samsara whose shares rose 15% following strong guidance. The biggest losers were Western Alliance Bancorp, Rocket Companies, ServisFirst Bancshares, SAIA, and RXO.