Praveen Gupta, 54, is mighty miffed. A stockmarket veteran, Gupta had always prided himself on being a cautious investor-the kind with 50 per cent stock, 40 per cent bonds and 10 per cent cash in his portfolio. With wife and three daughters, Gupta felt at home with solid, safe blue-chips. But last year, something happened to break Guptas 20-year-old habit.