Foreign investors sharply slowed their purchases of emerging market assets in February to below $22 billion even as flows remained positive across both debt and equities, data from a global banking trade group showed on Tuesday. Non-resident investors added a net $21.7 billion to emerging market portfolios last month, a sharp decline from January’s record $100.5 billion and below the $45.5 billion recorded in February last year, the Institute of International Finance said.