Almost 40 percent of Nvidia’s second-quarter revenue came from two customers, according to a filing by the company with the Securities and Exchange Commission (SEC).

While the GPU giant did not name the customers – referring to them in the filing as ‘Customer A’ and ‘Customer B’ – Nvidia said that during Q2 2026, the two were responsible for 23 percent and 16 percent of total revenue, respectively. The companies are almost certainly among the biggest hyperscalers Amazon, Microsoft, Google, and Meta.

The revenue generated by the two customers was directly attributable to Nvidia’s Compute and Networking segment, the company said, adding that for the first half of fiscal year 2026, Customer A represented 20 percent of total revenue and Customer B represented 15 percent, respectively.

Additionally, sales to four additional customers accounted for 14 percent, 11 percent, another 11 percent, and 10 percent of Q2 revenue, again attributable to the Compute and Networking segment, Nvidia said.

The sales to customers A and B represent an increase on the 14 percent and 11 percent of revenue generated by Nvidia’s top two customers in Q2 2025. It is not known if the customers from 2025 and 2026 are the same.

The revelation comes after Nvidia posted revenue of $46.7 billion for Q2 2026, a 6 percent increase from the previous quarter and a 56 percent jump from the year before.

While the company’s data center segment also saw increased growth to $41.1bn during the quarter, up five percent from Q1 2026 and up 56 percent from Q2 2025, for the second consecutive quarter in a row, Nvidia narrowly missed revenue estimates for the segment.

Nvidia also updated its outlook for Q3 2026, expecting revenue of $54bn, with a two percent margin of error. Some analysts had been predicting revenue of $60bn for the upcoming quarter, and shares in the company dropped by around two percent following the announcement.

While Nvidia was allowed in July to resume sales of its H20 chip to Chinese customers, reportedly leading it to order 300,000 H20 chips from TSMC to meet demand, the outlook assumes no H20 shipments in the next quarter.

While no H20 sales to China-based customers were made in Q2, Nvidia reported it “benefited from a $180m release of previously reserved H20 inventory, from approximately $650m in unrestricted H20 sales to a customer outside of China.”