Trading in shares of Societe Bancaire Privee will resume today, ending a 10-day trading suspension, during which it emerged that Swiss bank regulators intervened in the bank in October and may still be overseeing its affairs.

According to media reports, the regulator is investigating possible market manipulation, although the bank’s chairman Guy Studer has said the suspension was linked to the illiquidity of the shares, which are controlled by founder Riccardo Tattoni and his associates.

Mr Tattoni is thought to be negotiating the sale of his holdings in SBP to a European buyer, but it isn't clear whether the regulators have asked for a change of control.