Marvell to Join S&P 500 After AI-Fueled Profit Surge

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June 5, 2026 — Marvell Technology will join the benchmark S&P 500 Index later this month after meeting a key profitability requirement, according to an announcement from S&P Dow Jones Indices on Friday. The company will replace PoolCorp before the start of trading on June 22.

Following the announcement, Marvell shares rose about 6% in extended trading.

AI Boom Helps Clear Profitability Hurdle

Marvell's inclusion follows a sharp improvement in its financial performance, supported by strong demand for artificial intelligence infrastructure and custom semiconductor solutions. The company recently achieved profitability on a GAAP basis over the most recent four quarters, satisfying one of the key requirements for entry into the S&P 500.

The stock has more than tripled in value during 2026, benefiting from investor enthusiasm surrounding AI-related semiconductor companies.

Custom AI Chips Drive Growth Expectations

Marvell has emerged as a major beneficiary of growing investment in AI data centers. Alongside competitors such as Nvidia and Broadcom, the company develops technology used in large-scale cloud and AI infrastructure.

The company recently forecast that revenue from its custom chip business could exceed $10 billion by fiscal 2029, reflecting continued demand from cloud providers expanding AI capabilities.

Index Rebalancing to Trigger Fund Purchases

Marvell's addition to the S&P 500 is expected to prompt index-tracking funds and exchange-traded funds to adjust their portfolios ahead of the June 22 effective date. The quarterly rebalancing will also see PoolCorp removed from the benchmark index.

The move highlights the growing influence of AI and data-center companies within major U.S. equity benchmarks as investors continue to favor businesses positioned to benefit from expanding artificial intelligence spending.