Semiconductor materials stocks stage full-throttle rally as market polarization deepens

Tokyo stocks rebounded sharply on Wednesday, with the benchmark Nikkei Stock Average surging 1,667 yen to close at 68,402 yen. The index clocked an intraday gain of more than 2,000 yen before paring some advances toward the closing bell, ultimately settling firmly in the 68,000-yen territory and bypassing the 67,000-yen mark entirely on a closing basis. The blistering rally showcased a highly polarized market, leaving many retail investors watching from the sidelines in amazement as their personal portfolios stagnated. With the market tearing through milestones, media headlines that recently heralded the dawn of the "60,000-yen era" already look outdated, suggesting this milestone may be remembered as a brief passing season rather than a prolonged epoch.

This tech-driven onslaught made Tuesday's sharp pullback look like a distant memory, proving that the afternoon dip where the Nikkei plunged nearly 1,400 yen into the mid-65,000-yen range was a golden buying opportunity, even with one's eyes closed. While risk-on sentiment began brewing during European trading hours, Wall Street initially wavered at the opening bell before a broad-based buying wave lifted the wider market. Crucially, semiconductor heavyweights remained the undisputed locomotive powering the equity advance. The Philadelphia Semiconductor Index (SOX) became the ultimate emblem of this risk-tolerant climate, soaring nearly 6% to break into uncharted "blue-sky" territory.

Overnight in New York, investor bullishness was stoked by a 7% jump in semiconductor equipment leader Applied Materials and a 4.7% gain for ASML Holding , which maintains a monopoly on EUV lithography systems. However, the true showstopper was a spectacular 33% explosion in Marvell Technology . Although Marvell shares the fabless design category with market darling Nvidia , their operational domains are distinct: where Nvidia's chips serve as the brain of generative AI, Marvell dominates the data infrastructure networks that act as the nervous system. This lack of direct friction likely prompted Nvidia CEO Jensen Huang to stoke the fires at a technology event in Taiwan, asserting that "the next trillion-dollar company is Marvell"?a high-profile endorsement that supercharged Marvell's stock, whether driven by diplomatic lip service or genuine conviction regarding the essential architecture of the upcoming AI agent era.

By comparison, the Tokyo market is still in the nascent stages of its own AI transformation, implying substantial room for upward convergence given the massive valuation gap with its U.S. peers. Even flash-memory giant Kioxia Holdings <285A>, which has seen its valuation expand rapidly, commands a market capitalization of only around 43 trillion yen. Joining the elite trillion-dollar club would require Kioxia to add more than 100 trillion yen to its market value?a steep hurdle requiring a tripling of its current stock price, yet an effective narrative for global capital looking to buy into a restructuring play. Should Kioxia solidify its status as a borderless vehicle for foreign institutional inflows, its equity performance will likely serve as a crucial medium-term barometer for the depth of Japan's AI structural bull run.

Against this backdrop, global asset managers are increasingly rotating into the "pickaxe" plays?the upstream materials and infrastructure providers essential for building AI data centers and the high-speed networks connecting them. This explains why the Nasdaq Composite lagged behind the soaring SOX index overnight, weighed down by a sharp rotation out of software-related names. The Tokyo market mirrored this stark divergence on Wednesday, with software firms facing harsh headwinds in direct opposition to the semiconductor euphoria. Haunted by the lingering aftereffects of the recent Anthropic shock, the session firmly drilled into the market’s consciousness that the hardware and infrastructure enablers form the true bedrock of this full-throttle market rally.

Concurrently, capital inflows into semiconductor chemistry and advanced materials suppliers have accelerated dramatically, carving out a lucrative secondary trading lane alongside the popular MLCC plays. Rasa Industries Ltd. <4022> fired the opening salvo by locking at its daily limit up to lead the gainers' list, but the buying quickly generalized. Photomask blank makers AGC Inc. <5201> and Hoya Corporation <7741> both jumped, as did photoresist and silicon wafer global giant Shin-Etsu Chemical Co., Ltd. <4063>, packaging encapsulant specialist Resonac Holdings Corporation <4004>, and premier substrate manufacturer Ibiden Co., Ltd. <4062>. Looking ahead, institutional radars are firmly locked onto specialized players like Shikoku Kasei Holdings Corporation <4099>, Tri Chemical Laboratories Inc. <4369>, Mitsubishi Chemical Group Corporation <4188>, and Stella Chemifa Corporation <4109>. Furthermore, food and biotechnology giant Ajinomoto Co., Inc. <2802>?which holds a virtual monopoly on high-performance buildup films for advanced packaging by leveraging its core amino acid technologies?is poised to resume its primary structural uptrend, utilizing its 25-day moving average as a clear technical springboard.

Turning to Thursday's calendar, domestic investors will digest the weekly cross-border securities transaction data ahead of the opening bell, followed by a flurry of May auto sales data spanning imported, new, and mini-vehicle registrations during trading hours. Homebuilder Sekisui House Ltd. <1928> is also slated to report its February-April earnings results. On the international front, the macroeconomic spotlight will shine on April Eurozone retail sales, alongside critical U.S. data points including weekly initial jobless claims and the revised first-quarter labor productivity index.

Source: MINKABU PRESS

*Translated by generative AI. Click here for the original article.