Global provider of alternative asset and corporate services, Sanne Group, saw its share value plunge by 33 percent yesterday following a profit warning from the firm.

In an update on trading for the six months ended 30 June 2019 and a full year outlook, Sanne - which trades on the FTSE250 - warned that despite record levels of new business wins from both new and existing clients and "very strong revenue performance across all core alternatives business segments and jurisdictions", its underlying operating margin in H1 2019 is expected to be approximately 26 percent, below previous expectations for the current year.

Sann...