The current largest company in the world is Nvidia ( NVDA 3.05% ) . It has a market cap of $4.5 trillion and has a decent lead over some of its big tech peers. Nvidia is the clear favorite to maintain its position as the world's largest company at the end of 2026, but Alphabet ( GOOG 1.29% ) ( GOOGL 1.41% ) is also a strong candidate.

Alphabet may start selling its in-house AI computing units to external companies, which would expand its core business and challenge Nvidia. This could propel Alphabet to become the world's largest company, but it will be a tough challenge to dethrone Nvidia.

The case for Nvidia

Nvidia makes graphics processing units (GPUs) . Originally intended for processing gaming graphics, GPUs have been used to run arduous workloads since the

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