Principal PNB Mutual Fund has restructured Principal Debt Savings Fund - Monthly Income Plan, an open-ended income scheme into Principal Equity Savings Fund, an open-ended equity scheme, effective from the business day immediately following Jun 22. The new benchmark index for the restructured fund will be 30% Nifty 50 Index and 70% CRISIL Liquid Fund Index, and the new fund manager will be P.V.K. Mohan.