UPDATE 1-Publicis denies M&A talks following stock jump

(Updates with Publicis’ denial)

LONDON/PARIS, Jan 8 (Reuters) - A spokeswoman for Publicis denied on Friday that the French advertising group was holding any kind of merger talks after a report by British trade publication Campaign triggered a sharp jump in its share price.

Publicis’ stock surged by as much as 7% after Campaign reported that the group had held talks with a potential private equity investor.

Traders said that had triggered the sharp gains in Publicis’ stock.

“There are no talks of any sort going on,” a spokeswoman for Publicis told Reuters.

The stock subsequently trimmed gains to 3.5% at 44.3 euros by 1429 GMT.

Reporting by Julien Ponthus, Thyagaraju Adinarayan and and Pamela Barbaglia Editing by Mathieu Rosemain and Elaine Hardcastle