Motilal Oswal AMC is planning to launch four index funds next week. All these four open-ended passive schemes will track different indices. The new Motilal Oswal Nifty 500 Fund will be a multi cap mutual fund scheme, Motilal Oswal Nifty Bank Index Fund will be a thematic scheme tracking the Nifty Bank TRI, Motilal Oswal Nifty Midcap 150 Index Fund will follow Nifty Midcap 150 TRI and Motilal Oswal Nifty Smallcap 250 Index Fund will track the NIFTY Smallcap 250 TRI.