STOCKHOLM (Reuters) - Swedish telecom operator Telia <TELIA.ST> is mulling a bid for Denmark's TDC <TDC.CO>, Swedish business daily Dagens Industri reported on Thursday, citing unnamed sources.


Copenhagen-listed TDC, with a market capitalization of 30 billion Danish crowns ($4.29 billion), would become the biggest acquisition ever by a listed Swedish company if the deal where to go through, according to the newspaper.


Telia, valued just above four times higher with a market capitalization of 159 billion Swedish crowns ($17.74 billion), would likely have to make a share rights issue to finance the deal, Dagens Industri reports.


Sweden holds a 37 percent stake in Telia and the government's willingness to do a deal is unknown.


(Reporting by Johan Ahlander; Editing by Bernard Orr)