In a note to clients — as reported by “Barron’s” (http://macte.ch/SZOQT) — RBC Capital Markets analyst Mike Abramsky said he thinks that Verizon may sell out of the iPhone in the first week the device is available, which he counts as starting Thursday, after surpassing one million units.

Abramsky bases his conjecture on what Verizon reported was a stock-out of the device when it went on sale online to existing Verizon customers last Thursday, and based on what he estimates was inventory on hand of one to 1.5 million units dedicated to the phone’s introduction, notes “Barron’s.” The analyst predicts the iPhone may sell three million to four million units in its first quarter of availability (Feb. 10 through March 32).

Abramsky is forecasting Verizon to sell 9-10 million iPhones this calendar year. But he notes that this estimate could be “conservative.”