Hedge fund Segantii Capital Management bought stakes in mining and oil exploration stocks in the fourth quarter, amid a rout in commodities that has deepened this year. Hong Kong-based Segantii acquired a new stake of Anadarko Petroleum Corp. in the three months ended Dec. 31, buying 403,590 shares in the oil and gas exploration company valued at $19.6 million, according to regulatory filings. Segantii also bought American depository receipts of mining company...