Deutsche Bank AG was fined €10 million ($10.3 million) by Spain’s securities regulator CNMV for selling derivatives to clients who later said they didn’t understand the products and suffered steep losses as a result.

Spanish supervisors said on Monday they had fined Germany's Deutsche Bank 10 million euros ($10.32 million) for infringements related to advice given to Spanish clients on financial instruments based on currencies.

UBS’s stock is now worth buying, after tumbling following the Swiss banking giant’s fourth-quarter earnings report, Deutsche Bank analysts say.