Microsoft Briefly Moves Ahead of Nvidia in Market Value

Microsoft briefly overtook Nvidia in market value during Tuesday trading, becoming the world’s second-most valuable company for the first time since June 2025. The shift came as Nvidia shares fell sharply, while Microsoft’s stock was also declining. A later snapshot showed Microsoft’s lead had disappeared by midday.

Nvidia fell more than 6% to about $167.11 during the initial trading period, while Microsoft was down about 0.4% at $543.25. The selloff pushed Nvidia below Microsoft in the rankings. The brief did not establish that Microsoft held second place later in the session or at the close.

By midday, Microsoft had fallen more than 3%, according to a later market account. At 12:45 p.m. ET, its shares were reported at $527.45, down 3.25%, valuing the company at about $3.92 trillion. Nvidia traded at $166.83 shortly afterward, with a market value near $4.03 trillion. Those figures put Nvidia back ahead at that point.

Investors have been weighing whether spending on artificial-intelligence infrastructure will produce returns sufficient to support the sector’s high valuations. Nvidia’s decline followed a 4.3% drop on Monday. With Tuesday’s fall added, the company was on track to...