Has any era given birth to more dubious investment mechanisms than today?
The S&P 500 gained 61.35 points to 4,173.85. The Dow rose 360.68 points, or 1.1%, to 34,382.13. The Nasdaq, on which the losses this week have been steepest, added 304.99 points, or 2.3%, to 13,429.98.