Fidelity slashed its stake in PetroChina and Sinopec amid calls...to divest its holdings in companies linked to Sudan... Fidelity declined to say whether it cut its holdings in response to pressure from human rights groups... However [Eric Cohen, chairman of Fidelity Out of Sudan] said Tuesday's filing presents an incomplete picture of Fidelity's investments because it doesn't include information about the company's holdings of H shares on the Hong Kong exchange. [also refers to Berkshire Hathaway]