FRANKFURT: Swiss bank UBS saw its shares slide on Tuesday on news that investors had pulled billions out of its division serving wealthy clients — a token of the market turbulence that has shaken the world in the past few months. The Zurich-based bank, which nevertheless booked higher fourth quarter profits, cited ‘very low levels of client activity and pronounced risk aversion’ as it reported 3.4 billion Swiss francs ($3.3 billion) had flowed out of its wealth management arm, which handles money from rich people outside the US. Fourth-quarter outflows in emerging markets and Europe outweighed inflows in the Asia Pacific region and Switzerland.