Apple is ticking higher despite reports of continued iPhone X supply issues (AAPL)

iPhone X iPhone 8

Apple shares are up slightly after another report surfaced that the company's iPhone X will be undersupplied for the rest of the year.

Apple is up 0.38% to $156.77 in early Tuesday trading on reports that only 20 million iPhone Xs will be available for sale before 2018, about half of Apple's original goal.

The phone's OLED panels are exceptionally hard to produce, according to a new report from Nikkei. Apple's suppliers are only able to make 10 million panels a month, according to the report.

Only 2 million to 3 million phones will be available for pre-order, Min-Chi Kuo, an analyst at KGI Securities, previously suggested. KGI Securities and Nikkei's report seem to corroborate each other.

The first phones will be available for pre-order starting on October 27 and will arrive just a week later. Apple could have as many as 7 million to 8 million additional phones to distribute to retailers worldwide for the official launch of the phone.

Google's flagship phone, the Pixel 2 XL, is experiencing screen issues of its own. Google has said it is "actively investigating" reports of burn-in, graininess, and suspect color pallets.

Apple is up 34.37% this year.