Summary
Chipmaker Broadcom's quarterly forecast fell short of market expectations, sparking the semiconductor sector's worst selloff in over two weeks, with the Philadelphia Semiconductor Index plunging as much as 6.3% and Broadcom shares tumbling nearly 13%.
Forecast Falls Short of Market Hopes
Chipmaker Broadcom's fiscal second-quarter earnings report, released after the close on June 3, became the catalyst for a sharp selloff across the semiconductor sector. Although the company posted revenue of $22.19 billion, up 48% year-over-year, and net income of $9.31 billion, up 88%, the figures fell just short of the $22.27 billion consensus estimate. More critically, CEO Hock Tan did not raise the company's full-year target of $100 billion in AI chip sales.
This detail quickly triggered investor panic. Driven by the AI boom, Broadcom shares had surged nearly 40% year-to-date and had multiplied almost ninefold since the end of 2022. The market had anticipated further upward revisions to full-year guidance, but management's cautious stance was interpreted as a signal that AI demand growth may be slowing. Broadcom shares plunged 15% in after-hours trading and closed down 12% on Thursday, marking the largest single-day decline since early 2025.
Broadcom's business centers on designing and manufacturing custom AI chips for tech giants like Google, including Google's tensor processing units (TPUs). The company projected current-quarter revenue of about $29.4 billion, above the $28.53 billion Wall Street estimate, but this forward guidance failed to ease market concerns about the return-on-investment cycle for AI infrastructure spending.
Semiconductor Sector Under Broad Pressure
Broadcom's report triggered a chain reaction across the chip sector. On June 4, the Philadelphia Semiconductor Index (SOX), home to industry bellwethers like Nvidia, Intel, and AMD, plunged as much as 6.3% intraday. Although it rebounded somewhat into the close, the index still ended down about 2%, marking its worst performance in more than two weeks.
Micron Technology fell more than 7%, ARM Holdings dropped 4%, Qualcomm declined 2%, Intel slipped nearly 1%, and AMD fell 3%. Notably, Marvell Technology shares initially dropped but later turned positive, closing nearly 5% higher, one of the few bright spots in the sector.
John Vinh, equity research analyst at KeyBanc Capital Markets, told CNBC's "Squawk Box" on Thursday that the pressure on chip stocks is warranted. "These stocks have all had very strong runs," Vinh noted, pointing to repeated upward revisions, especially on the AI front. He suggested that the Broadcom reversal indicates that market expectations have caught up with, or even exceeded, the chip sector's actual growth trajectory.
In a note Thursday, HSBC analysts led by Max Kettner, chief multi-asset strategist, flagged a slide in chip prices, coupled with a slowdown in AI spending and rollout, as among their "biggest worries." This concern was amplified following Broadcom's report, as investors began reassessing the return cycle and sustainability of AI infrastructure investments.
Middle East Tensions Fuel Inflation Concerns
The chip stock selloff unfolded against the backdrop of a sudden escalation in Middle East geopolitical risk. In the early hours of June 3, Iran launched 13 ballistic missiles and 17 drones at Kuwait, severely damaging Kuwait International Airport and killing one person. Iran's Revolutionary Guard acknowledged strikes on U.S. military facilities, calling them retaliation for U.S. attacks on Qeshm Island. The U.S. Central Command subsequently announced precision strikes on Iranian military ground control stations on Qeshm Island, located at the entrance to the Strait of Hormuz.
The incident directly pushed oil prices higher. West Texas Intermediate (WTI) crude rose 2.41% to $96.02 per barrel, and Brent crude gained 1.89% to $97.81 per barrel. The Strait of Hormuz is a critical chokepoint for roughly one-fifth of global oil shipments, and military conflict in the region raised fears of supply disruptions.
Rising oil prices triggered a chain reaction: elevated inflation expectations kept the probability of a Fed rate hike by year-end above 60%, 10-year Treasury yields climbed further, and high-valuation growth stocks came under pressure. This transmission mechanism has played out repeatedly over the past three months, but the market selectively ignored it during May's AI euphoria. On June 3, reality forced investors to confront this logic once again.
JPMorgan noted in a same-day research report that accelerating depletion of oil inventories would "ultimately force the Strait of Hormuz to reopen, one way or another," and projected the strait could resume navigation within June. But for traders, the word "could" signifies uncertainty, and in the current high-valuation environment, uncertainty gets amplified.
Signs of Market Rotation Emerge
Market performance on June 3 showed clear signs of sector rotation. The Dow Jones Industrial Average plunged 620.72 points, or 1.21%, to 50,687.07, the steepest decline among major indexes. The S&P 500 fell 0.74% to 7,553.68, ending a nine-day winning streak that began May 21. The Nasdaq Composite dropped 0.89% to 26,853.98, and the Russell 2000 small-cap index fell 1.25%.
Notably, despite the selloff in tech and chip stocks, about 360 companies in the S&P 500 rose on the day. This suggests capital was not fleeing the market entirely, but rather rotating from high-valuation tech stocks into other industries that benefit from a resilient economy. The Dow's record high on the same day further confirmed this rotation trend.
The communication services sector continued to underperform, with Alphabet down 0.67% in the wake of an $80 billion equity offering announced the previous day. Microsoft tumbled 3.28%, dragging down the broader tech sector. The software sector overall fell 2.43%. Palo Alto Networks, which had surged 8% after hours the previous day on strong earnings, reversed course and closed down 4.37%, as the market chose to "sell the news" rather than "buy the story."
The energy sector, benefiting from rising oil prices, was among the few sectors to post gains. But even so, overall market breadth was extremely poor. The VIX volatility index jumped noticeably from the prior day's 15-16 range, ending nearly two weeks of low-level trading. The fear gauge began breathing again, signaling a return of hedging demand.
Valuation Pressure and the Road Ahead
The core question facing markets is whether the rapid growth in AI infrastructure investment can continue to support chip stocks' high valuations. Broadcom's earnings report provides an important reference point. The company's revenue and profits are still growing rapidly, but the market's answer to whether that growth is sufficient to justify further stock price gains was a resounding no.
Analysts note that chip stocks have undergone multiple rounds of expectation revisions over the past two years, particularly in the AI space. But as the base continues to expand, maintaining high growth becomes increasingly difficult. Broadcom's failure to raise full-year guidance may signal that AI chip demand growth is transitioning from an explosive phase to a more stable one, creating valuation pressure for chip stocks that have already priced in substantial gains.
Uncertainty in the Middle East adds an additional risk factor. If tensions in the Strait of Hormuz persist, oil prices could rise further, elevating inflation expectations and suppressing high-valuation growth stocks. Markets are awaiting Friday's nonfarm payrolls data. If the report shows continued labor market strength, Treasury yields could push above 4.5%, placing even greater pressure on equity valuations.
For institutions focused on digital asset infrastructure, volatility in the chip sector carries some relevance. AI and high-performance computing chips are not only core to traditional tech industries but also critical hardware for blockchain validation, cryptocurrency mining, and decentralized computing networks. Stability and cost changes in the chip supply chain could indirectly affect operating costs and scalability of digital asset infrastructure. However, the current market volatility reflects broader shifts in risk appetite rather than a fundamental change in the chip sector's underlying trajectory.
Overall, the chip stock selloff triggered by Broadcom's earnings marks a moment of sober reflection on the AI boom. Investors are beginning to focus more on valuation reasonableness and growth sustainability, rather than simply chasing hot themes. This return to rationality is healthy for long-term market development, though it may amplify volatility in the near term. The semiconductor sector remains central to the technology ecosystem, but expectations are being recalibrated to align more closely with realistic growth trajectories.
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