Shares of Japan's Toto refreshed five-year highs as investors keep piling into the stock, re-evaluating the toilet maker as a stealth artificial-intelligence play due to its indispensable role in the ...

TOKYO -- Japan's Toto may be best known for churning out toilets, bathtubs and kitchens, but its earnings are now anchored by a very different kind of product: high-precision ceramic components used ...