
The statement follows a report in Germany's Manager Magazin that said Liberty Global was looking to merge Ziggo and UPC along with its Belgian operator Telenet. Industry insiders said the deal would be financed with shares as much as possible.
Liberty Global acquired a 28.5 percent stake in Ziggo earlier this year. In July, when it last increased its stake, the company called it more an opportunistic investment than a strategic move, with no full bid for Ziggo planned.
Ziggo said there was no certainty that Liberty would come back with a revised proposal. Ziggo's shares rose over 11 percent in Amsterdam following the statement, suggesting the market expects a new offer. According to filings with the Dutch securities regulator AFM, several large investors have been building stakes in Ziggo in recent months, including BNP Paribas Investment Partners and Ameriprise Financial.