NEW YORK (Bloomberg) — ValueAct Capital Partners LP, the San Francisco-based hedge-fund manager co-founded by Jeff Ubben, bought a 5.5 percent in Warner Chilcott Ltd.The firm owns 13.8 million shares of the Bermuda-based maker of women’s health-care and dermatology products, according to regulatory filing last week. The stake is valued at $200 million.

ValueAct, which manages about $4.8 billion, is known for buying stakes in companies and pressing for changes to increase their share prices. Misys Plc, a UK provider of software for banks and hospitals, named Ubben to its board last month after ValueAct took a 9.5 percent stake.