The Indian equity benchmarks moved sharply lower on Wednesday mirroring losses in other Asian markets as investor sentiment was spooked after risks of world economy entering global recession grew after Dow Jones entered the bear market territory, analysts said. The Sensex fell as much as 550 points and Nifty 50 index dropped below its important psychological level of 17,000 to hit an intraday low of 16,825. Asian shares tumbled Wednesday after a wobbly day ended with mixed results on Wall Street as markets churn over the prospect of a possible recession.