Broadcom's 11% Slump Drags Micron, Marvell Lower in Premarket

Major U.S. semiconductor stocks fell sharply in premarket trading on June 4, 2026, led by a double-digit decline in Broadcom following its quarterly earnings report. Broadcom shares dropped approximately 11% after the company projected third-quarter revenue below analyst expectations. The selloff spread to peers Micron Technology and Marvell Technology, which fell 4.5% and 5.8%, respectively, indicating broad-based concern over near-term demand for AI-related chips. The losses erased roughly $90 billion in combined market capitalization for the three firms before the market open, according to premarket data.

Context — [why this matters now]

The semiconductor sector has been a primary beneficiary of the artificial intelligence investment boom, with companies like Broadcom supplying critical networking components for data centers. This pullback occurs as investors scrutinize whether the staggering growth rates priced into many chip stocks are sustainable. The current macro backdrop features a stable but cautious Federal Reserve, with the 10-year Treasury yield hovering near 4.5%.

The immediate catalyst was Broadcom's revenue forecast for the current quarter, which fell short of the highest Wall Street estimates. While the company reported strong results for the prior quarter, the guidance suggested a potential deceleration in spending from its largest cloud customers. This triggered a reassessment of the entire AI infrastructure supply chain, as Broadcom is viewed as a bellwether for enterprise and cloud capital expenditure.

This pattern echoes a similar sector-wide selloff in late January 2026, when Texas Instruments provided cautious guidance, causing the Philadelphia Semiconductor Index (SOX) to drop 6% over two sessions. The current event tests the resilience of the AI trade, which has propelled the SOX to a 35% year-to-date gain prior to this report.

Data — [what the numbers show]

The premarket losses were significant and widespread across the chip sector. Broadcom led the decline with an 11.2% drop to approximately $1,680 per share. Marvell Technology fell 5.8% to $76.50, and Micron Technology declined 4.5% to $142.30. The VanEck Semiconductor ETF (SMH) was down 3.1% in premarket trading, underperforming the S&P 500 futures, which were flat.

A comparison of premarket moves shows the concentration of selling pressure on companies with high exposure to AI infrastructure.

Company	Ticker	Premarket Change	Key Business Focus
Broadcom	AVGO	-11.2%	AI Networking, Custom Chips
Marvell Technology	MRVL	-5.8%	Data Center Connectivity
Micron Technology	MU	-4.5%	High-Bandwidth Memory (HBM)

Broadcom's market capitalization fell by over $70 billion based on premarket indications. The company forecast Q3 revenue of $22.5 billion, below the average analyst estimate of $22.8 billion, despite beating Q2 expectations with revenue of $22.1 billion.

Analysis — [what it means for markets / sectors / tickers]

The selloff indicates a market repricing of near-term AI revenue expectations. Companies directly involved in AI infrastructure, particularly networking and custom silicon, face the most immediate pressure. This could create a near-term headwind for firms like AMD and Nvidia, which are also highly levered to continued hyperscaler spending. The SOX index may test its 50-day moving average, a key technical level it has held since April.

A counter-argument is that Broadcom's guidance may reflect a temporary digestion period rather than a structural decline in AI demand. The company's full-year revenue forecast still implies strong growth, and its product cycle for AI-related silicon remains strong. The reaction could be an overcorrection driven by inflated expectations.

Positioning data suggests hedge funds were heavily net long the semiconductor sector ahead of the earnings report. The swift reversal likely triggered automated selling and forced de-risking in crowded AI trades. Flow is rotating toward defensive sectors like utilities and consumer staples, which were modestly higher in premarket action.

Outlook — [what to watch next]

Market participants will monitor the broader chip sector's performance during the regular trading session to gauge the depth of the selloff. Key technical support for the SOX index is at the 4,200 level, a 5% decline from its recent peak. A break below this could signal a deeper correction.

The next major catalyst for the sector is the release of the U.S. Consumer Price Index (CPI) report on June 11, 2026, which will influence interest rate expectations and growth sentiment. Micron Technology's earnings report on June 25 will be critical for confirming or contradicting the demand slowdown narrative, specifically for high-bandwidth memory used in AI servers.

Traders will watch for commentary from other cloud infrastructure providers. Any indication of moderating capital expenditure plans from Amazon AWS, Microsoft Azure, or Google Cloud in the coming weeks would validate the concerns sparked by Broadcom's report.

Frequently Asked Questions

Why are AI stocks so sensitive to earnings guidance?

AI-related stocks have traded at elevated valuations based on projections of multi-year explosive growth. Any signal of a slowdown, even if temporary, challenges these assumptions and forces a rapid valuation reassessment. Guidance is often more impactful than past results because it provides a concrete data point for updating financial models, leading to significant price moves as positions are adjusted.

How does Broadcom's business relate to other chip companies like Nvidia?

Broadcom is a critical supplier of networking chips and custom silicon that connect and power the data centers running Nvidia's GPUs. While Nvidia focuses on accelerated computing, Broadcom provides the underlying networking fabric, such as Ethernet switches and custom AI accelerators for large clients. Weakness at Broadcom can imply slowing infrastructure builds, which would eventually impact demand for GPUs and memory from companies like Nvidia and Micron.

What is the historical performance of chip stocks after a sharp guidance-driven drop?

Historically, the semiconductor sector has experienced volatility around earnings but has demonstrated a strong ability to recover if the long-term growth narrative remains intact. Following the January 2026 selloff triggered by Texas Instruments, the SOX index recovered its losses within three weeks as subsequent data confirmed healthy end-demand. The key differentiator is whether the guidance miss is company-specific or indicative of a broader sector-wide downturn.

Bottom Line

Broadcom's disappointing forecast triggered a sector-wide reassessment of AI spending momentum.

Disclaimer: This article is for informational purposes only and does not constitute investment advice. CFD trading carries high risk of capital loss.