The Edgar system is the reliable source for all SEC filings for each registrant. All registered funds disclose their holdings every quarter. You will not see what price bought or sold -- only the net change in shares and end of period holdings. As for basis and prices paid/sold, you'll need to make assumptions about gross sells/buys and #$%$ trading in the subject stock over the quarter in question with charts, OBV, MF other filers and the like. Not rocket science, but beyond broad brush, not easy either.
The NASDAQ site also posts up the 13Fs, but historically that information is almost as bad as pos YHOO when it comes to consistency and accuracy.