Korean Nvidia rival hires JPMorgan to prepare for IPO

In the artificial intelligence semiconductor market, where Nvidia controls more than 80 percent of the accelerator segment, increasingly more players are emerging ready to challenge the California giant. South Korean startup Rebellions just took one of the most decisive steps in this direction — the company appointed JPMorgan Chase as global lead underwriter for conducting an initial public offering on the Seoul Stock Exchange. This appointment transforms the upcoming IPO into one of the most closely watched technology events in South Korea in recent years.

Rebellions was founded in 2020 by former Samsung Electronics engineers and from the start aimed at creating specialized chips for machine learning and inference tasks — that very process when a trained neural network handles user requests in real time. It is inference that has become today's key battlefield in the industry: as AI models penetrate everyday products — from search engines to medical diagnostics — the need for efficient and affordable chips to perform these tasks grows exponentially. Rebellions developed a line of ATOM and REBEL processors oriented specifically at this segment and has already attracted the attention of major South Korean corporations and government structures.

The choice of JPMorgan as global underwriter is far more than a formality. It is a clear signal of the scale of Rebellions' ambitions. One of the world's largest investment banks typically takes on placements that promise significant international interest. For a South Korean startup working in a segment dominated by American and Taiwanese companies, attracting JPMorgan means that investors on both sides of the Pacific will closely monitor this IPO. By unofficial estimates, the company could expect a valuation of several billion dollars — an impressive figure for a firm that hasn't existed yet for six years.

The context of this placement extends far beyond corporate finance. South Korea is actively building its own ecosystem in artificial intelligence, and the country's government views the semiconductor industry as a strategic national security priority. In 2025, Rebellions merged with another South Korean chipmaker Sapeon — a division spun out from SK Telecom — which substantially expanded its engineering resources and customer base. This consolidation created a player capable of competing not only at the local but also at the global level, especially given the situation where American export restrictions on supplying advanced chips to China are reshaping supply chains worldwide.

For the global AI chip market, Rebellions' IPO is important primarily as an indicator of maturity in the competitive landscape. Until recently, attempts to challenge Nvidia ended modestly: AMD is slowly gaining share, Intel is restructuring its accelerator division, and numerous startups like Graphcore and Habana Labs were either acquired or failed to achieve profitability. Rebellions offers a different path — the company is betting on energy efficiency and optimization for specific workloads, which is especially relevant for data centers where electricity costs become a critical factor. If the market values this approach highly, it could inspire a new wave of investment in alternative accelerator architectures.

There are risks that cannot be ignored. The South Korean stock market historically values technology companies at a discount compared to American venues — a phenomenon known as the "Korean discount." Investors may doubt the ability of a relatively young company to compete with Nvidia, whose CUDA ecosystem has become the de-facto standard for development. Additionally, the IPO market in Asia itself is experiencing an ambiguous period: a number of major placements in 2025 showed mixed results, and investor sentiment remains cautious.

Nevertheless, the very fact that a South Korean AI chip startup is going public with JPMorgan's support speaks to a fundamental shift in the industry. The era of one supplier's unilateral dominance over accelerators is coming to an end — not because Nvidia is weakening, but because demand for AI computing is growing so rapidly that the market physically cannot depend on a single source. Rebellions is betting that the future belongs not to universal but to specialized solutions. The Seoul IPO will show whether those who vote with their money share this bet.