Apple’s stock just hit another all-time high — and you can chalk it up to the iPhone.

A Wall Street analyst on Monday raised eyebrows with a prediction that as many as 50 million orders will be placed for the iPhone X, which began taking pre-orders this weekend ahead of its in-store launch that’s slated for Friday.

Likewise, Apple shares got a boost Monday as Canalys Research said surprisingly strong demand for the iPhone 8 in China — possibly helped by 8 being a lucky number in the Middle Kingdom — is fueling a 40 percent jump in iPhone sales there.

Apple shares rose to an unprecedented $167.95 on Monday morning before closing at $166.72 for the day, up 2.3 percent.

Daniel Ives, head of technology at research firm GBH Insights, said in a Monday note that pre-order demand for the iPhone X was likely going to be close to 50 million units, up from an earlier forecast of 40 million.

By comparison, Apple sold 74.5 million units of the iPhone 6 — which was priced more than a third lower than the iPhone X — when it launched in fall 2014.

Ives told The Post he increased his forecast after factoring in his estimate of 20 million iPhone Xs being available on its Nov. 3 launch date; the five- to six-week wait Apple is telling customers they will face; and the weekly output of iPhone Xs that Apple is capable of producing.

Ives added he does not expect to see iPhone X supply catch up with consumer demand until April or May.

Drexel Hamilton analyst Brian White was more cautious about Apple’s so-called “future of the smartphone.”

White said demand for the iPhone X is “very strong,” but, citing the supply-chain issues that reportedly have plagued the iPhone X for months, told The Post that he expects Apple to move just 27 million units in the December quarter.

Apple, in a statement Friday, confirmed customer demand for the iPhone X was “off the charts” — adding that it is “working hard to get this revolutionary new product into the hands of every customer who wants one, as quickly as possible.”