ZURICH, Jan 29 : Swiss engineering group ABB on Thursday said it was confident about 2026 as it reported fourth-quarter earnings slightly ahead of forecasts and launched a new $2 billion share buyback. The maker of electrification systems and motors has been benefiting from the artificial intelligence boom, teaming up with companies including chipmaker Nvidia to develop power systems for next-generation AI data centres. ABB said it was also seeing strong demand from rail customers as well as