【Semiconductor Consensus Tracking】20260503 AI Hardware Proliferation: Funding and Consensus Diverge

【US Stock Top 15 Momentum List】

Part 1. US Market Focus and Situation Insights

§1 Sub-industry Themes

This week, analysts' earnings upgrade momentum is highly concentrated in key segments of the AI hardware supply chain. This trend is not limited to a single product but broadly covers the entire value chain from upstream memory and midstream component manufacturing to downstream system integration. Among them, memory giant Sandisk (SNDK.OQ) received significant upward revisions due to the surge in demand for high-end NAND Flash for AI servers, becoming one of this week's Leaders. At the same time, TTM Technologies (TTMI.OQ), focusing on high-end Printed Circuit Boards (PCB), and Electronic Manufacturing Services (EMS) providers such as Sanmina (SANM.OQ) and Benchmark Electronics (BHE.N), also saw significant Consensus Upgrades in earnings expectations. This indicates that the market is broadly optimistic about the hardware demand driven by AI infrastructure. From memory and PCBs to EMS foundry services, the profit outlook for the entire ecosystem is being actively revalued, forming the clearest investment theme of the week.

§2 Stocks in Focus This Week

This week's focus stocks target two Leaders benefiting from the AI infrastructure wave:

• Sandisk (SNDK.OQ): A leading global provider of NAND Flash memory products, offering critical storage solutions for AI data centers and edge devices. Driven by AI servers and HBM, the memory industry is entering a strong recovery cycle. Its strength is demonstrated by a 21.09% Consensus Upgrade from analysts this week, with an expected explosive EPS growth of 484.81% over the next 12 months, reflecting extremely high market expectations for its operating leverage and profitability.
• Sanmina (SANM.OQ): A top-tier Electronic Manufacturing Services (EMS) provider specializing in integrated manufacturing solutions for highly complex fields such as communications, defense, and AI hardware. As AI hardware demand spreads from chips to the system level, EMS providers directly benefit. Its strength stems from analysts' optimism about its leadership in high-end manufacturing, with a 9.13% Consensus Upgrade this week and a projected EPS growth rate of 162.23% over the next year, indicating that its critical role in the AI supply chain is being repriced by the market.

§3 Risk Alerts

No stocks labeled as "🟣 Trap" or "⚫ Downgrade" appeared on this week's momentum list. This phenomenon indicates that the EPS Consensus Upgrades for the listed companies generally come from solid improvements in fundamental prospects, rather than being accompanied by negative noise such as analyst downgrades or target price cuts. Overall, the quality of this week's list is healthy, and the momentum signals driven by earnings upgrades are relatively pure and hold high reference value.

Taiwan Stocks Weekly Momentum Ranking

US-Taiwan Supply Chain Spillover and Risk Assessment

🟢 Play Spillover - Long

• Strongest Signal (US Stock Moves + Taiwan Stock Consensus Also Upgrading)
• TTMI.OQ → 3037.TW Unimicron & 8046.TW Nan Ya PCB: Strong momentum from US PCB giant TTM Technologies is directly driving the valuation of the highest-tier ABF substrate group in Taiwan. Unimicron (3037.TW) has a 1W Consensus Upgrade % as high as 20.23%, and Nan Ya PCB (8046.TW) also has a 6.42% weekly upgrade, indicating that the market has already reflected this positive news into the Taiwan supply chain. The signal is clear, and trend-following operations are viable.
• LITE.OQ → 6442.TW PCL: US optical communication component giant Lumentum has seen both its stock price and earnings expectations rise, corresponding to the Networking and optical communication group in Taiwan stocks. PCL (6442.TW) has shown the strongest signal, with a 1W Consensus Upgrade % of 8.47% and an EPS Growth Est. as high as 271.17%, indicating a positive industry trend and that capital has begun its layout.
• Spillover Opportunity (US Stock Moves but Taiwan Stock Has Not Yet)
• SNDK.OQ → 8299.TWO Phison: The recovery in NAND storage market demand represented by SanDisk is evident, with its earnings growth estimate reaching 484.81%. In contrast, Phison (8299.TWO), the leader in Taiwan's NAND controller chips, still has a 1W Consensus Upgrade % of 0.00%, showing that Domestic Fund Managers' consensus has not yet caught up with the optimistic expectations of US stocks. Considering Phison's industry position, this is a typical laggard spillover opportunity.
• SANM.OQ / BHE.N → 3231.TW Wistron: Stock prices and earnings expectations for US EMS firms Sanmina and Benchmark Electronics are strong, especially with BHE surging 21.55% this week. This trend should spill over to Taiwan's server and AI-related EMS foundries, but Wistron (3231.TW) still has a 1W Consensus Upgrade % of 0.00%. Market attention has not fully fermented yet, leaving significant room for a laggard rally.

⚫ Danger Zone - Avoid

• Based on the provided [US Stock Top 15 Momentum List], no stocks on the list are marked with "🟣 Trap" or "⚫ Downgrade" labels; therefore, there are no applicable analysis targets for this section.

§1 Double-Strength Clusters — Favored by Both Capital and Analysts

MediaTek (Semiconductor IC Design), Unimicron (PCB & ABF Substrates), Jentech and AVC (AI Servers & Thermal Modules)

These stocks in the Semiconductor IC Design, PCB & ABF Substrate, and AI Server & Thermal Module sectors show a dual favor from Smart Money and Analyst Consensus this week. MediaTek leads with monthly Smart Money inflows of +55.6B and a 1M Consensus Upgrade of +6.2%, reflecting high market affirmation for its AI edge computing chips, high-end smartphone SoCs, and automotive electronics layout. The industrial logic lies in its technical leadership, which meets terminal device demands for higher computing power and lower power consumption. Unimicron (+11.0B capital, 1M upgrade +23.4%) and Nan Ya PCB (+1.8B capital, 1M upgrade +10.7%) represent the critical position of ABF substrates in AI servers, HPC, and Advanced Packaging trends, where tight supply and high technical barriers are core drivers. The strength of Jentech (+9.7B capital, 1M upgrade +6.0%) and AVC (+6.0B capital, 1M upgrade +10.1%) clearly points out that AI server Thermal Modules have become an indispensable part of AI infrastructure, with exploding demand for advanced thermal technologies such as liquid cooling and vapor chambers. The common revelation of these groups is that key components and IC designs surrounding the enhancement of AI core computing power are receiving the most concentrated market favor, with high order visibility and clear growth momentum expected.

§2 Smart Money Leading the Way—Potential Positioning Directions

Lite-On (AI Servers & Thermal Module) saw a Smart Money inflow of +2.8B, despite an Analysts' monthly Consensus Downgrade of -1.3%. This may suggest that Smart Money is aware of new orders or product specification upgrades for Lite-On in the AI server power supply unit (PSU) field, especially against the backdrop of significantly increasing demand for high-performance, high-wattage power supplies. The market may not have fully reflected its potential supply share in next-generation AI server platforms such as the GB200. It is necessary to track whether there is new project collaboration or order materialization from major Cloud Service Providers (CSPs).

Foxconn (AI Servers & Thermal Module) saw a Smart Money inflow of +2.8B, while analysts' monthly consensus remained flat. As the world's largest EMS provider, Foxconn's early positioning by Smart Money may stem from receiving undisclosed large orders for full AI server assembly, or breakthrough progress in strategic customer relationships in emerging business areas such as AI servers and electric vehicles. The potential catalyst is a customer's AI server expansion plan being a Beat on expectations, or the introduction of new customers.

BLM (Networking & Optical Communications) saw a Smart Money inflow of +1.3B, with analysts' monthly consensus remaining flat. This indicates the market may be optimistic about BLM's potential in high-speed fiber optic communication components, particularly in response to the sharp increase in demand for optical module speed and bandwidth for internal interconnects within AI data centers. Assuming it has successfully entered the 800G or even 1.6T high-speed optical module supply chain, or made progress in new technology areas such as CPO/Silicon Photonics, this would be a growth driver that analysts have not yet fully reflected.

§3 Consensus Upgrade but Capital Wait-and-See—Divergence Signals to Watch

TSMC (Semiconductor Manufacturing & Materials) saw a Smart Money net outflow of -51.9B, while the analysts' monthly consensus still saw a Consensus Upgrade of +7.9%. This massive divergence may reflect Smart Money's belief that TSMC's stock price has already fully reflected the tailwinds of its AI chip foundry business, with some capital choosing to take profits or rotate into small-to-mid-cap stocks with higher elasticity. It is necessary to observe whether TSMC's future revenue growth rate can continue to beat market expectations, as well as the subsequent buying and selling trends of Foreign Institutional Investors to avoid excessive market optimism.

LandMark (Networking & Optical Communications) saw a massive monthly Consensus Upgrade of +40.4%, but a Smart Money net outflow of -1.7B. This strong divergence may stem from analysts' optimistic expectations for its long-term potential in high-speed optical communication components (such as Silicon Photonics), while Smart Money may be concerned about insufficient short-term order visibility, high technology transition costs, or customer implementation progress falling short of expectations. It is necessary to observe LandMark's actual order volume and gross margin performance in the high-speed optical communication field to confirm whether its revenue growth is sustainable.

ChipMOS (Advanced Packaging & Testing) saw a monthly upgrade of +35.3%, but a Smart Money net outflow of -2.7B. Despite the popularity of the advanced packaging theme, capital wait-and-see behavior may reflect that ChipMOS's traditional businesses, such as COF/DDIC, are still affected by the slow recovery of consumer electronics, resulting in an overall profit improvement speed that lags expectations. Furthermore, its substantial contribution in new fields like HBM testing or Chiplet packaging may not have yet shown economies of scale. Attention should be paid to the speed of increasing the weight of ChipMOS's non-DDI business and the specific progress of high-end packaging and testing orders.

TUC (PCB & ABF Substrate) saw a monthly Consensus Upgrade of +24.2%, but a Smart Money net outflow of -3.9B. In contrast to the capital inflows seen by peers like Unimicron and Nan Ya PCB, this suggests that Smart Money may believe TUC's growth prospects in AI server CCL (Copper Clad Laminate) have been over-priced, or that its market share expansion in high-end CCL products faces fierce competition. It is necessary to closely track changes in TUC's high-frequency high-speed CCL product line customer structure and actual shipment volumes, as well as whether gross margins are pressured by market competition.

Overall Market Tone

This week, the Taiwan-US tech supply chain focused on AI hardware. Capital and consensus have highly converged on this main theme, forming a clear chain reaction across the industry. However, divergence has appeared within Taiwan stocks, as Smart Money has begun to take profits on some stocks that have already risen sharply or have unclear prospects, indicating a market shift from broad optimism to more precise stock selection.

Three Key Insights of the Week

1. AI hardware demand is spreading across the board, leading to a supply chain value revaluation

AI hardware demand is spreading from upstream to downstream, forming a clear industry chain transmission effect. The massive increase in earnings expectations for US memory giant Sandisk (SNDK.OQ) and PCB manufacturer TTM (TTMI.OQ) has directly spilled over to the Taiwan ABF substrate leader Unimicron (3037.TW), which saw a Consensus Upgrade of 20.23% this week. This confirms that the market is revaluating the value of the entire AI infrastructure ecosystem.

2. A time gap exists between US and Taiwan valuations, creating laggard catch-up opportunities

A time gap exists in the market's valuation of the AI supply chain, creating clear laggard catch-up opportunities. US EMS plant Benchmark (BHE.N) surged 21.55% this week, but institutional consensus for the Taiwanese server assembly plant Wistron (3231.TW) has yet to react. Similarly, earnings expectations for NAND giant Sandisk exploded, but the consensus for the leading Taiwanese controller chip manufacturer Phison (8299.TWO) remains flat, indicating that the spillover effect of capital and consensus has not yet fully materialized.

3. Divergence between capital and consensus serves as a key risk indicator for Taiwan stocks

A significant divergence between "consensus and capital" has appeared within Taiwan stocks, becoming a key risk indicator for stock selection. Although TSMC (2330.TW) and TUC (2383.TW) received significant Consensus Upgrades from analysts, they faced net Smart Money outflows, suggesting that stock prices may have already overreacted to positive news. In contrast, stocks like Unimicron (3037.TW) show a dual strength in both capital and consensus, indicating that their upward momentum is more solid; the importance of stock selection has surpassed simply chasing themes.

Watchlist for Next Week

• NAND Flash contract prices: This will directly verify whether Sandisk's strong momentum continues and serve as a leading indicator for whether Phison (8299.TWO) will welcome a Consensus Upgrade.
• April revenue for Wistron (3231.TW) and Lite-On (2301.TW): With strong performance in the US EMS and AI power supply chains, Taiwan plant revenue data is needed to confirm if orders have materialized; this is a key verification point for early Smart Money positioning.
• ABF substrate supply chain channel checks and pricing: The strong upgrades for Unimicron (3037.TW) and Nan Ya PCB (8046.TW) need support from sustained tight supply-demand fundamentals. Attention should be paid to downstream demand visibility and pricing trends to judge the sustainability of momentum.
• Foreign Institutional Investors' buying and selling trends for TSMC (2330.TW): As a heavy weight stock and bellwether, its foreign capital flow will be key to judging whether the Smart Money profit-taking trend is expanding or is merely a short-term adjustment.