ENGLEWOOD, Colo. (AP) -- Liberty Media expects to raise about $309 million from shareholders, it said Tuesday in a regulatory filing.

"We have an ongoing need for cash to take advantage of business opportunities as they arise," the company said in a filing with the Securities and Exchange Commission. It did not name any deals under consideration.

Liberty said it plans a rights offering, in which existing stockholders can buy shares at a discount.

This summer, Liberty agreed to acquire the outstanding capital stock of Casema Holding B.V., the third-largest cable operator in the Netherlands. The deal also called for Liberty to assume about $783 million debt Casema owed France Telecom.

Liberty also acquired Wink Communications in a $100 million cash transaction, dealt it to OpenTV and then acquired a controlling stake in OpenTV. Wink and OpenTV are interactive television companies.

When Liberty split from AT&T last year, it said it intended to issue $500 million in equity.

Liberty shares closed up 28 cents Tuesday at $6.57 on the New York Stock Exchange.