Indian stocks tanked on Friday following their global peers as the fear of earlier-than-expected Fed tapering set off a selling spree. Barring select names in the IT sector, all sectoral indices traded in the red. After opening in the red, benchmark indices pared some losses. At 9.31 am, BSE flagship Sensex was down 232 points or 0.42 per cent to 55,397. NSE benchmark Nifty declined 81 points or 0.49 per cent to 16,488.