The company, which provides cable TV, broadband and telephony to three million households, said in April that it expects core profits to increase by between 2.5% and 3.5%. This figure has now been revised to 1%.
Reuters reports that Ziggo, which provides services to 56% of the Netherlands, plans to increase customer investment in order to retain customers in addition to developing a wireless internet product.
In April this year Liberty Global acquired a 12.65% stake in the cable provider, and the US group now holds a 15% in the company.
