Shares of Advanced Micro Devices Inc. (NASDAQ:AMD) fell sharply on Monday, declining 7.0% to $485.66 in late trading as U.S. markets remained open. The sell-off erased approximately $60 billion in market value, bringing the company's market capitalization to roughly $801 billion. The decline was steeper than that of rival Nvidia Corp. (NASDAQ:NVDA), which fell 4.7% to $197.03, and outpaced the broader PHLX Semiconductor Index (SOX), which dropped 3.9%.
The sell-off was driven by a combination of factors, including delays in AMD's highly anticipated Helios AI chip launches and concerns that the stock's valuation had become stretched relative to Nvidia. According to preliminary estimates, AMD's forward sales multiple stood at 17.9 times projected revenue, a 35% premium over Nvidia's 13.2 times multiple. This valuation gap has raised eyebrows among investors, especially given the timing mismatch between AMD's current revenue streams and the expected ramp-up of Helios-related sales.
The Helios launch schedule is a key point of contention. While AMD has secured major customers such as Microsoft Corp. (NASDAQ:MSFT), with deliveries slated to begin in the second half of 2026, the bulk of the revenue from these contracts is not expected until late 2026 or 2027. OpenAI anticipates Helios will be operational in the fourth quarter of 2026, while Anthropic projects its initial gigawatt deployment in the first half of 2027. Anthropic's deal alone could involve up to two gigawatts of AMD hardware, and AMD has pledged up to $5 billion for an equity stake in the company.
Reuters reported that server sales from these partnerships could climb to tens of billions of dollars, but the investments remain tied to deployment targets. Chief Executive Lisa Su described the collaboration as one that will “establish Helios as a major platform,” but the market is now demanding more immediate evidence of revenue conversion. Analysts have noted that while every new contract “deepens AMD’s credibility as the number-two to Nvidia,” the key question remains when that revenue will materialize.
The broader semiconductor sector has also been under pressure, with the SOX index on track for its third consecutive decline, now 22.4% below its record closing high on June 22. The sell-off was not limited to AMD; Nvidia also fell, and the entire sector was affected by renewed competition concerns following the strong debut of CXMT Corp. (SHA:688825) on the Shanghai Stock Exchange, which highlighted the growing threat from Chinese semiconductor firms.
AMD is scheduled to report its second-quarter earnings after markets close on August 4, which will be a critical test for the company. The company has forecast revenue of $11.2 billion, give or take $300 million, and projects a non-GAAP gross margin of roughly 56%. In the first quarter, data-center revenue surged 57% year-over-year to $5.8 billion, a segment that must sustain the company until the larger Helios deployments begin.
Despite the near-term headwinds, AMD's customer wins are genuine and the long-term potential of the Helios platform remains significant. However, the current valuation now requires faster evidence that these commitments are translating into tangible revenue and margin growth. Risks remain, including reliance on software development, supplier and customer timing, export regulations, and milestone-based financing that could push revenue beyond current projections.
In summary, AMD's 7% drop reflects a market that is reassessing the company's growth trajectory in light of delayed Helios launches and a premium valuation. While the strategic partnerships are promising, the timing of revenue realization remains uncertain, leaving investors to weigh the potential rewards against the near-term risks.
