Ramanathan K, Executive VP & CIO at ING advices not to take sectoral calls and instead focus on individual stock specific ideas working bottom up, remains underweight on telecom sector due to policy level issues plaguing the sector. While, Vivek Mahajan, Head Research at Aditya Birla Money expects markets to face difficult times ahead particularly in September series. Valuations of largecap pharma and FMCG stocks seem to have topped out according to him