the FED has not given its descision as i m writing this, so mostly the opening would depend upon FED's descision.
the technical levels for the day are - support exists at 4065 breaking tht, we may see 4015-3994.
crossing 4099, nifty will hit 4172 before any further downfall.closing below 4015 will be weak
(EOD chart attached,all fut levels)