Semiconductor sector in turmoil: ACM Research leads the drop at 16.6%, where is the equipment track headed?

On July 2, 2026, shares of ACM Research, Inc. (NASDAQ: ACMR) experienced a sharp decline, hitting an intraday low of $114.37 before closing at $97.80, a single-day drop of 16.6%. On the previous trading day (July 1), the stock closed at $126.89. Over just two trading days, the stock retreated significantly from its recent highs.

From trading data, the day's volume reached 1.8764 million shares, with a turnover of approximately $222 million, and the market cap fell to about $8.1B. The price-to-earnings ratio was approximately 83.09 times, with earnings per share of $1.41.

This decline was not an isolated event. On July 2, the U.S. semiconductor sector as a whole faced pressure, with the memory semiconductor segment continuing its downtrend and the Nasdaq index falling 0.8%. Within the semiconductor equipment sub-sector, ACMR led the decline, falling 9.9%, while ONTO fell 7.0%, MKSI fell 6.9%, ENTG fell 5.8%, and AMKR fell 4.7%. ACM Research's decline was the most significant among its peers.

Deconstructing the Decline: A Convergence of Multiple Factors

A single-day drop of 16.6% is uncommon in mature markets, and it results from the convergence of multiple factors.

First, excessive prior gains created technical correction needs.

Before this decline, ACM Research's stock had experienced a strong upward cycle. Data shows that ACMR's stock price had risen approximately 78% in one month during an earlier period and about 283.86% over the past year. After the stock hit a high of $126.89 on June 30, technical indicators signaled high-level pressure. In the absence of new fundamental catalysts, profit-taking by concentrated selling is a common market behavior. Some market analysts noted that this pullback occurred after the stock's strong rally, a typical "short-term surge followed by a pullback."

Second, systemic selling occurred at the industry level.

The semiconductor equipment sector weakened as a whole in early July. On July 1, ACMR had already fallen 5.5% to $119.89, and the market observed that the decline was not driven by any company-specific catalyst but rather a sector-wide pullback. The decline intensified on July 2, with the memory semiconductor segment continuing its downtrend. This characteristic of "indiscriminate selling" suggests that capital was systematically reducing positions across the entire semiconductor equipment track, not targeting ACM Research specifically.

Third, performance concerns from the A-share subsidiary caused sentiment spillover.

ACM Research's A-share listed subsidiary, ACM Shanghai (688082), released its first-quarter report in April 2026, showing operating revenue of 1.48B yuan but net profit attributable to the parent of only 104 million yuan, a significant year-on-year decline of 57.66% compared to the first quarter of 2025. Although the A-share and U.S. listings are separate entities, their businesses are highly correlated. The sharp decline in the A-share subsidiary's net profit naturally raised concerns among investors about the profitability of the U.S. parent company. On July 2, the A-share semiconductor sector remained sluggish, with ACM Shanghai falling over 10%, led by equipment and memory chip directions. This cross-market sentiment spillover exacerbated the selling pressure on ACMR in the U.S. market.

Fourth, high valuation increased market demands for performance delivery.

As of the close on July 2, ACMR's price-to-earnings ratio remained high at 83.09 times. In a high-valuation state, the market reacts more violently to any signals that fall short of expectations. Previous analysis pointed out that while AI-driven demand supports long-term growth, ACMR's valuation was already relatively high. When the industry as a whole experiences volatility, high-valuation stocks often face greater correction pressure.

Industry Fundamentals: Is the Semiconductor Equipment Track Really Over?

This is the most critical concern for the market right now. Before answering this question, it is necessary to review the fundamental data of the semiconductor equipment industry.

The global equipment market remains in an expansion cycle. The Semiconductor Equipment and Materials International (SEMI) released a report on June 11, 2026, significantly raising its growth forecast for the global front-end semiconductor equipment market in 2026 from the previous 16.5% to 23.5%, with a market size reaching $152.2 billion. In the first quarter of 2026, global semiconductor equipment shipments reached $36.55 billion, a 14% year-on-year increase, setting a new single-quarter record.

Mainstream institutions are optimistic about the industry's outlook. JPMorgan predicts that the global semiconductor equipment market will be approximately $159 billion in 2026, up 28% year-on-year, and believes there is significant room for upward revision in this forecast. Other institutions judge that the current upward cycle of the semiconductor equipment industry is not over, and the expansion pace of domestic memory and advanced logic processes is exceeding expectations, making 2026 potentially a major year for advanced process and memory chip expansion.

AI and HPC are the core drivers. According to SEMI data, the proportion of AI and HPC investments in the semiconductor equipment market will grow from 41% in 2025 to 57% in 2030, driving advanced process technologies and capacity demand at a rapid growth rate.

Based on these data, the boom cycle of the semiconductor equipment industry continues to be confirmed. A single-day 16.6% decline in an individual stock reflects more of the market's emotional fluctuations and valuation digestion within a specific time window, rather than a trend reversal of industry fundamentals.

ACM Research's Individual Logic: Short-Term Volatility vs. Long-Term Variables

Against the backdrop of the industry still being in an expansion cycle, ACM Research's individual fundamentals also have dimensions worth noting.

Order growth remains strong. According to information disclosed by ACM Shanghai during investor research activities on June 16, 2026, new orders in the first quarter of 2026 grew 65% year-on-year. The company maintains its full-year revenue guidance of 8.2 billion to 8.8 billion yuan. Among new orders signed so far in 2026, the proportion of electroplating equipment has risen to about 30%. The company's orders in hand stand at 9.07B yuan, up 34.10% year-on-year.

Overseas market expansion has made substantial progress. ACM Shanghai's cleaning equipment has entered a 12-inch wafer fab in Singapore, and its advanced packaging equipment has entered the supply chains of international top-tier customers such as ASE (Kaohsiung/Zhongli/Singapore). The company also received orders for multiple wafer-level advanced packaging series wet process equipment from a leading North American tech company. These developments indicate that the company's globalization strategy is progressing steadily.

Product line continues to expand. ACM Shanghai's cleaning equipment covers over 95% of semiconductor cleaning process steps. The company is also advancing the R&D and commercialization of new products such as PECVD and ALD vertical furnaces. The transformation from a "cleaning equipment leader" to a "platform-type semiconductor equipment company" is a key pillar of the company's long-term value.

However, short-term pressures cannot be ignored. The fact that the A-share subsidiary's Q1 net profit fell 57.66% year-on-year, combined with the high valuation leading to high market expectations for performance delivery, constitutes a source of short-term stock price pressure. Additionally, analysts have significant divergence on ACMR's target price—some give a median target of $109.2, while others believe the fair value is below the current trading price. This divergence itself indicates uncertainty in current pricing.

Several Dimensions for Post-Market Observation

Based on the above analysis, the post-market observation of ACM Research can be carried out from the following dimensions:

1. Continuous verification of industry equipment shipment data. Whether global semiconductor equipment shipments can sustain the growth momentum from Q1 is a core indicator for judging whether the industry boom has truly peaked. Whether SEMI's upwardly revised full-year growth expectation (23.5%) can be realized requires continuous validation from subsequent quarterly data.
2. The pace and structure of the company's new orders. Whether the 65% year-on-year order growth rate in Q1 is sustainable and whether the proportion of electroplating equipment can continue to rise will directly affect the market's judgment on whether the 2026 full-year revenue guidance (8.2-8.8 billion yuan) can be achieved.
3. The execution efficiency of overseas market expansion. Whether orders from international customers such as the Singapore wafer fab, North American customers, and ASE can convert from "demonstrative deliveries" to "scale repeat orders" is key to evaluating the effectiveness of the company's globalization strategy.
4. The path of valuation digestion. With a P/E ratio of 83 times, the market needs a reasonable path for valuation digestion—either by reducing the P/E denominator through high earnings growth or by further stock price adjustments to normalize valuation. The direction of these two paths will determine the mid-term stock price movement.

Conclusion

ACM Research's stock closed down 16.6% at $97.80 on July 2, resulting from the convergence of multiple factors: technical correction after a significant prior rally, systemic selling in the semiconductor sector, sentiment spillover from the A-share subsidiary's performance concerns, and heightened market sensitivity under high valuation.

From an industry fundamental perspective, SEMI raised its growth forecast for the global front-end semiconductor equipment market in 2026 to 23.5%, with a market size of $152.2 billion, and Q1 shipment data hit an all-time high, indicating that the boom cycle of the semiconductor equipment industry continues. ACM Research itself saw 65% year-on-year growth in new orders in Q1, maintained its full-year revenue guidance of 8.2-8.8 billion yuan, and made substantial progress in overseas market expansion. Its individual fundamentals are not spinning in a vacuum.

However, the high valuation (P/E ~83 times) and the reality of the A-share subsidiary's Q1 net profit declining 57.66% year-on-year constitute short-term pressure that cannot be ignored. The future direction will depend on the continuous verification of industry equipment shipment data, the extent of the company's order pace realization, the execution efficiency of overseas market expansion, and the specific path of valuation digestion.

The semiconductor equipment track is not over, but the market is transitioning from "expectation-driven" to "performance-verification-driven." In this transition, volatility is the norm, and the ability to deliver fundamentals will be the key metric distinguishing long-term value from short-term bubbles.

FAQ

Q1: What are the main reasons for ACM Research's 16.6% plunge on July 2?

A1: This sharp decline was the result of multiple factors: technical correction after a significant prior rally (the stock had risen about 283.86% over the past year); systemic selling in the semiconductor equipment sector, with ACMR leading the decline; sentiment spillover from the A-share subsidiary ACM Shanghai's 57.66% year-on-year net profit decline in Q1; and extreme sensitivity to any negative signals under high valuation (P/E ~83 times).

Q2: Has the boom cycle of the semiconductor equipment industry ended?

A2: Based on available data, the industry boom cycle is still ongoing. SEMI raised its full-year front-end equipment market growth forecast to 23.5% in June 2026, with a size of $152.2 billion; Q1 global equipment shipments were $36.55 billion, up 14% year-on-year, a record high. Mainstream institutions remain positive about the 2026-2027 equipment cycle.

Q3: What is the current state of ACM Research's fundamentals?

A3: The company maintains order growth—new orders in Q1 2026 grew 65% year-on-year, and it maintains its full-year revenue guidance of 8.2-8.8 billion yuan. Overseas market expansion has progressed, with cleaning equipment entering a Singapore wafer fab and advanced packaging equipment entering international customer supply chains like ASE. However, the A-share subsidiary's significant year-on-year net profit decline in Q1 is the main short-term fundamental concern.

Q4: What key indicators should be monitored going forward?

A4: It is recommended to focus on four dimensions: continuous changes in global semiconductor equipment shipments; the pace and structure of the company's new orders; the conversion efficiency of overseas market expansion from demonstrative deliveries to scale repeat orders; and the path of valuation (P/E) digestion.

Q5: Is the semiconductor equipment track still worth paying attention to?

A5: The industry's long-term drivers (AI, HPC, memory expansion) still exist, but the market is transitioning from "expectation-driven" to "performance-verification-driven." In this phase, individual stock volatility may increase, and the ability to deliver fundamentals becomes the core variable distinguishing value.