Credit Suisse is to advise the company on “future strategic options”.

When asked if this meant an IPO (initial public offering) for the company, a spokesperson said nothing had been confirmed and a “further announcement would be made in due course”.

Reports have suggested that a €1billion IPO is on the cards but the company refused to comment on the figure.

Stock was created through the integration of Stock and Polmos Lublin in 2007 and is backed by Los Angeles-headquartered investment firm Oaktree Capital.