Mona Lisa Tiles (002918-CN) jumps 46% despite saying semiconductor revenue is zero

Mona Lisa Group (002918-CN) hit its daily limit for a fourth straight session on May 13, 2026, closing at 15.40 yuan in Shenzhen and lifting its four-day gain above 46%, after traders linked the tile maker to ceramic substrates used in AI chip cooling. The company cautioned on May 12, 2026, that its products are mainly used in building decoration and that it has generated “no revenue or profit” from semiconductor materials. Ceramic substrates for chips typically use advanced aluminum nitride or silicon nitride materials, while Mona Lisa’s construction ceramics are silicate-based, with little technical overlap. Exchange data showed the rally was driven largely by retail-oriented brokerage branches. The top five buying seats purchased 76.38 million yuan, led by Zheshang Securities’ Ningbo branch, while institutional seats and Shenzhen Stock Connect sold 10.10 million yuan and 7.53 million yuan, respectively. Nvidia rose 2.3% on May 13, 2026, extending its winning streak to six sessions and briefly reaching a $5.5 trillion market value.