Punjab, Oct. 19 -- The Sensex fell about 876 points on Monday to roughly 73,853, with private banks and IT leading the selling. It had been more than 1,000 points above the day's low at one stage before giving it all back.

The numbers, with a caveat

Reports disagree. One puts the Sensex close at 73,852.90, down 876.37 points or 1.17 per cent; another at 73,821.02, down 1.22 per cent. The Nifty is variously given at 22,888.95 (down 1.11 per cent) and 22,936.00 (down 1.06 per cent).

The exchanges are the authority. The direction and the magnitude are not in dispute.

The IT whipsaw

This is the part worth tracking. Nifty IT fell 1.28 per cent on Monday - two sessions after rising about 4 per cent on Friday, and three after leading a 1,534-...