Apple sales appear to have grown about 113 percent year-over-year in April, says Ticonderoga Securities analyst Brian White. The estimate is based on what White calls the "Apple Barometer," a collection of Taiwanese suppliers Apple is dependent on and who in turn are dependent on Apple. About 50 to 60 percent of the revenue in the barometer group is based on Apple, White observes. He cautions that there tends to be "lag" between when suppliers recognize sales and when Apple actually ships products.
