NAND storage is in short supply, and the major bathroom brand Toto has surged!

The artificial intelligence boom is reshaping global supply chains in unprecedented ways, and even the Japanese manufacturing giant TOTO, known for its bathroom fixtures, has unexpectedly benefited from this capital feast due to its secretive semiconductor materials business. On Thursday, the stock surged by 11% in the Japanese market, marking its largest increase since February 2021. This came after Goldman Sachs analysts upgraded the company's rating, citing that the construction of AI infrastructure is tightening the supply of NAND storage chips, thereby boosting the demand for TOTO's key chip manufacturing component—electrostatic chucks. This market reaction highlights the profound impact of AI data center expansion on the upstream supply chain. Goldman Sachs analysts Sachiko Okada and Sayako Tominaga noted in their report that the tight supply-demand environment in the storage industry will be a tailwind, and TOTO's chuck manufacturing business is expected to bring "significant profit growth." A representative from TOTO also confirmed that the ongoing construction of AI data centers is expected to further increase the demand for its electrostatic chucks. This unusual stock price movement not only made TOTO the best-performing stock in the ceramics sector on the Tokyo stock market on Thursday afternoon but also reflects the deep foundation of traditional Japanese consumer goods manufacturers in the semiconductor field. In addition to TOTO, several Japanese companies, including Ajinomoto, the inventor of MSG, and Kao Corporation, a cosmetics company, have deeply embedded themselves in the global chip supply chain through cross-industry technology applications. Invisible Champions Driven by AI Although TOTO is globally renowned for its warm-water washlets, it has been an important player in the semiconductor and display supply chains for decades. According to data compiled by Bloomberg, in the fiscal year ending March 2025, the company's new business areas accounted for 42% of its total operating revenue. The product drawing significant attention is the electrostatic chuck that TOTO began mass production of in 1988. This device uses electrostatic force to hold objects in place, primarily used to secure silicon wafers during the chip manufacturing process while helping to control temperature and prevent contamination. Goldman Sachs analysts upgraded TOTO's rating from "neutral" to "buy." They believe that as the supply of high-end and commodity storage chips tightens, TOTO's electrostatic chuck business will directly benefit from the wave of AI infrastructure construction. Chain Reaction of Global NAND Supply Tightening Currently, tech giants like Meta Platforms and Amazon are investing hundreds of billions of dollars to build data centers that support AI services, leading to widespread shortages of semiconductor products. This surge in demand has prompted global storage chip manufacturers—including SK Hynix, Samsung, and Kioxia Holdings—to expand production, directly driving the demand for products from upstream suppliers like TOTO. Fine ceramics, while similar in material to the sanitary ceramics used in TOTO's bathroom products, have a strength comparable to metals. Compared to metals, ceramics are lighter and can withstand higher temperatures, while not electrically interfering with chip manufacturing equipment. Despite its main drawbacks of being more brittle and costly, its physical properties are crucial in high-precision chip manufacturing environments. Cross-Border Dividends of Japan's Traditional Manufacturing Industry Toto is not the only Japanese consumer goods giant benefiting from the chip boom. Japan's long history in chip production has prompted many seemingly unrelated companies to establish semiconductor-related businesses. For example, Ajinomoto, the inventor of MSG, leverages its expertise in amino acids to produce essential chip insulation films (ABF). The cosmetics company Kao, which sells cleansing products, also has a chip wafer cleaning business. In Thursday's market trading, Toto's rise was accompanied by a broad rebound in AI concept stocks. Investors in OpenAI, SoftBank, and chip equipment manufacturer Disco both saw increases of over 10%. This trend indicates that investors are digging deeper into the supply chain, seeking undervalued assets that can benefit from the global computing power arms race.