Nifty recorded high 18267 and reversed from there. 18280-325 is very strong resistance zone. On the down side 17850 is very critical support for nifty. Trend deciding level. If Bulls able to held this support 17850 level, then we can see one more attempt to move higher. If, incase, Bulls fails to hold this 17850 support, then we can see deeper correction to resume. Hence, watch 17850 spot level keenly. Trade accordingly. Regards, Suryadev Bandari Research Analyst.