Markets open on a positive note; Nifty hovers around 8600 levels: Markets have started the session on a positive note tracking positive global cues. Markets will remain volatile as traders will unwind positions due to derivative expiry of March contract and fiscal-year profit booking. Investment trends by overseas investors, movement of rupee against the dollar and crude oil would also influence trading. The next major trigger for the Indian markets is Q4 results of India Inc. The Q4 results season starts during second week of April, 2015.