AI drives mega-cap surge

by SAVIOUS KWINIKA 
JOHANNESBURG – ARTIFICIAL intelligence (AI) has emerged as the dominant force reshaping global equity markets, with technology giants and semiconductor companies recording some of the strongest market capitalisation growth among the world’s largest listed firms.

A new analysis by investment research platform BestBrokers shows that companies driving the AI ecosystem, including chip designers, manufacturers and digital platforms, have experienced unprecedented increases in market value over the past three years.

The study examined 97 mega-cap companies, defined as businesses with market capitalisations of $200 billion or more, as of 17 June 2026.

The companies were analysed by country, sector and industry, with researchers comparing market size, concentration and changes in leadership between 2023 and 2026.

NVIDIA emerged as the biggest winner, with its market capitalisation soaring more than eightfold from $598.25 billion in 2023 to $5.02 trillion.

The surge, driven by booming demand for its graphics processing units (GPUs) used in AI systems, propelled the company to become the world’s most valuable listed business.

Broadcom recorded the second-largest increase, with its market value rising 585.79 percent from $261.34 billion to $1.79 trillion.

The growth highlights investor confidence in companies supplying networking, connectivity and semiconductor technologies supporting AI data centres.

Samsung was another major beneficiary, with its market capitalisation increasing nearly fivefold from $304.96 billion to $1.5 trillion.

The South Korean technology company also recorded the strongest one-year growth among mega-cap firms, rising 453.12 percent, largely due to demand for high-bandwidth memory chips used in AI accelerators.

Other major performers included Taiwan Semiconductor Manufacturing Company (TSMC), whose market value climbed 378.98 percent to $2.21 trillion, and Alphabet, Google’s parent company, which rose 278.61 percent to $4.53 trillion.

The analysis found that semiconductor companies dominated the rankings, with NVIDIA, Broadcom, TSMC and ASML among the fastest-growing mega-cap firms.

Their gains indicate that investors are rewarding businesses across the AI hardware supply chain, from chip design to advanced semiconductor manufacturing equipment.

Pharmaceutical company Eli Lilly was the only non-technology firm among the top performers, increasing its market capitalisation by 224.49 percent to surpass $1 trillion.

The growth was linked to investor confidence in its diabetes and weight-loss treatments.

Meta Platforms, despite more than tripling in value since 2023, recorded a decline of 9.68 percent over the past year, suggesting that investor enthusiasm has shifted towards other AI-focused companies.

Alan Goldberg, lead data analyst at BestBrokers, said the AI revolution had redirected significant capital towards companies building the infrastructure behind emerging technologies.

“Investors have poured unprecedented amounts of capital into the companies building the infrastructure behind the AI revolution,” Goldberg said.

He cautioned that rising valuations would increase pressure on companies to demonstrate sustainable long-term earnings growth.

“The next chapter of the AI boom will not be shaped by excitement over potential, but by evidence of sustainable, long-term value creation,” he said.

– CAJ News