Just in time: iPhone supplies at 100% in pre-Christmas surveyDecember 9, 2013: 9:35 AM ET
By Dec. 4, the iPhone 5S was available in all 60 U.S. stores surveyed by Piper Jaffray.
FORTUNE -- In early October, two weeks after Apple (AAPL) released the iPhone 5S, the device was out of stock at 92% of the 60 U.S. stores surveyed by Piper Jaffray's Gene Munster.
Piper Jaffray has been checking the stores twice a week ever since, and on Monday Munster announced in a note to clients that by Dec. 4, Apple had supplies in every one of them -- just in time for the big holiday rush.
"We believe Apple has caught up to demand, which we had expected ahead of the core holiday period," Munster writes. "In reflecting on the supply for the 5S product launch overall, we believe that net-net Apple has done a better job in suppling stores with phones proportional to demand."
CORRECTION: An earlier version of this story had Piper Jaffray checking stores every two weeks. According to Munster, they actually checked stores twice a week. "Bi-weekly," according to my dictionary, can mean either.