AI demand, earnings optimism lift tech giants' market value in May - Finance news and analysis from Global Banking & Finance Review
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AI demand, earnings optimism lift tech giants' market value in May

Published by Global Banking & Finance Review

Posted on June 2, 2026

2 min read

· Last updated: June 2, 2026

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AI Boom and Earnings Confidence Power Tech Giants’ Market Value in May

Market Value Growth Among Leading Technology Companies

June 2 (Reuters) - The world's most valuable technology companies with the exception of Alphabet added billions of dollars in market value in May, as upbeat earnings outlooks and strong demand for AI chips fuelled a rally in their shares.

Top Gainers: Apple, Micron, Samsung, and SK Hynix

Apple, memory chipmakers Micron Technology, Samsung Electronics and SK Hynix led the gains, adding $598 billion, $512 billion, $481 billion and $377 billion, respectively, in market value. Their valuations rose to $4.58 trillion, $1.09 trillion, $1.10 trillion and $1.34 trillion, respectively.

Apple’s Performance and Buyback Announcement

In late April, Apple pointed to strong demand for its flagship iPhone 17 and MacBook Neo and announced a fresh $100 billion share buyback.

Samsung and Micron’s Positive Earnings and Product Updates

Samsung reported an eightfold jump in first-quarter operating profit in April, while Micron drew analyst upgrades after saying its 2026 high-bandwidth memory (HBM) chips were already sold out and next-generation HBM4 products were in production.

Microsoft and Nvidia’s Market Value Surge

Microsoft and Nvidia also gained, with their market values rising by $315 billion and $276 billion, respectively, to $3.35 trillion and $5.11 trillion.

Nvidia’s Revenue Forecast and Share Repurchase

Nvidia forecast second-quarter revenue above expectations in May and announced an $80 billion share repurchase programme.

Alphabet’s Decline Amidst Tech Rally

Bucking the trend, Alphabet's market value dropped $59.77 billion to $4.59 trillion.

Market Value Changes in Other Sectors

In the world's 20 most valuable companies including other sectors, banking group JPMorgan Chase and retailing giant Walmart saw the biggest falls in market capitalisation in May, by $130.47 billion and $37.3 billion, respectively, to $921 billion and $802 billion.

Reporting Credits

(Reporting by Gaurav Dogra in Bengaluru; Editing by Emelia Sithole-Matarise)

Key Takeaways

  • Apple’s market cap rose ~$598 billion in May, propelled by surging iPhone 17 and MacBook Neo demand and a $100 billion buyback authorization
  • Memory chipmakers—Micron, Samsung, and SK Hynix—each surpassed $1 trillion valuation on AI-driven demand for high‑bandwidth memory
  • Nvidia forecast Q2 revenue above estimates and unveiled an $80 billion buyback, boosting its market cap; Alphabet was a notable exception, declining in May

Frequently Asked Questions

Which tech companies saw the biggest market value gains in May?
Apple, Micron Technology, Samsung Electronics, and SK Hynix recorded the largest market value gains in May, driven by AI demand and positive earnings.
Why did Micron Technology's market value surge in May?
Micron Technology saw its value jump due to analyst upgrades following news that its 2026 high-bandwidth memory chips were sold out and HBM4 production had begun.
How did Nvidia and Microsoft perform in May?
Nvidia and Microsoft both saw significant increases in market value, with Nvidia forecasting higher Q2 revenue and launching an $80 billion share repurchase.
Did all major tech firms benefit from the market rally?
No, Alphabet's market value dropped by $59.77 billion, bucking the trend seen by other tech giants in May.
Were any non-technology companies affected in May?
Yes, JPMorgan Chase and Walmart experienced the largest drops in market capitalisation among non-tech firms.

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