premise: Also helping sentiment was a rise in other global markets, especially in Asia, after the Tankan survey of Japanese business sentiment rose to a two-year high.
  Among the gainers on Wall Street, Adobe Systems leapt 2.00 dollars, or 4.9 percent, to 42.81 dollars after the software group reported a 16 percent increase in net profits.
  General Electric, the conglomerate often seen as a bellwether of the economy, advanced 1.15 dollars to 37.36.
  Home Depot fell eight cents to 39.89 after the home improvement retailer announced a share buyback program.
  Elsewhere, computer maker Dell lost 34 cents to 26.53 after announcing a further delay of its third-quarter results due to a regulatory inquiry.
   What caused Adobe's 4.9 percent leap?
hypothesis: a regulatory inquiry