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Nvidia Corp. (NVDA-Q) and Alphabet Inc. (GOOGL-Q) saw the biggest jump in their market capitalization in March, driven by artificial intelligence (AI) enthusiasm and anticipation for new products and expansion plans.

Nvidia’s market cap soared to $2.25 trillion at March-end, up 14% from February, while Alphabet’s rose 9% to $1.8 trillion.

Nvidia’s shares saw an upswing last month as the company announced its latest flagship AI processor is slated for release later this year, while Alphabet’s shares got a lift from reports of Apple’s interest in integrating Google’s Gemini AI engine into the iPhone.

The AI-driven market optimism also lifted Taiwan Semiconductor Manufacturing Company (TSM-N). TSMC’s market cap jumped about 12% to $632.5 billion.

Conversely, Tesla Inc. (TSLA-Q) faced the largest market cap drop, falling about 13% to $559.8 billion amid demand concerns, rising competition, and scrutiny over CEO Elon Musk’s $56 billion pay package.

Apple Inc. (AAPL-Q) experienced a decline, with its market cap dropping 5.1% to $2.65 trillion, amid slowing iPhone sales and a recent $2 billion fine from European regulators for antitrust violations.

Overall, major tech firms have experienced significant market gains this year. So far in 2024, Nvidia, Meta Platforms , and TSMC’s market caps have risen 81.8%, 42%, and 26%, respectively.

“For investors with excessive exposure to large-cap tech names and looking to diversify beyond the sector, we see opportunities in US small-caps and select European small- and mid-cap stocks,” said Mark Haefele, chief investment officer at UBS Global Wealth Management.

“We think their performance should approach that of their large-cap peers amid a supportive macro backdrop, and we see value in adding them in portfolios.”

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