Amidst a sea of rumours, a much-anticipated correction took a larger-than-life dimension at the stock market and forced the government to do some quick damage control.At the end of trading, a media-fuelled reaction to rumours of the Prime Minister’s ‘‘worry’’ about the market as well as income-tax raids against some market players took the benchmark Sensex down by a whopping 266 points. Stung to the quick, the government said it would ask market regulator Securities and Exchange Board of India (SEBI) to look into the series of reports in some media publications over the last couple of days suggesting that Prime Minister Manmohan Singh and the PMO had ordered a probe into the continuous rise in the Sensex over last few weeks. Prime Minister’s media advisor Sanjaya Baru said, ‘‘All the reports that appeared in the media (on PM and PMO stepping in, holding meetings and asking IB and the Finance ministry to probe into rise in the Sensex) are incorrect’’ and that ‘‘there were no such meetings held by the PMO’’. Despite clarifications by late afternoon from the PMO, the fall intensified as the session progressed after rumours about income-tax raids on five Ahmedabad brokers hit the market. A clarification from the Finance ministry that the raids on brokers were not a nationwide one did not stem the fall. The Sensex finally closed with a huge loss 3.1 per cent at 8,221.64, the biggest fall in the index in more than a year since the 565-point crash on May 17, 2004. Investor wealth—market capitalisation—plunged by a humongous Rs 1,16,000 crore ($26.40 billion) in a single day. Dealers said selling came mainly from local operators, traders and some funds. Margin calls from banks and brokers accentuated the sell-off. There were many stocks that offered no exit opportunity as they were locked at their lower circuit filters.