After his appointment in May, the president of 7-Eleven's floundering parent company promised to deliver a turnaround plan in about 100 days. Ryuichi Isaka is on day 112 and counting.

Since Isaka took over on May 26, shares of Seven & I Holdings Co. have fallen 7 percent, widening their decline so far this year through Wednesday to 21 percent.

The retail conglomerate has lost more than $10 billion in market value as domestic consumers become more frugal and international competition intensifies.