Nifty trading at 18870. Banknifty trading at 43950. Both trading at key resistance levels. Follow up buying is missing. Huge call writing visible at 44000 and 43900 strike in Banknifty . Huge call writing visible at 18900 in nifty. As weekly expiry today, we can expect big fluctuation with negative bias. Stay alert. Avoid Fresh longs until nifty cross abvoe 19000 and Banknifty above 44100. Regards, Suryadev Bandari Research Analyst.