LIVE: Apple reports its Q4 earnings

Apple is reporting its fiscal fourth quarter earnings on Thursday after the bell.

Apple's having a good run. Its stock is up 45% so far this year. This quarter's earnings will give a glimpse into the first few weeks of sales for the iPhone 8, one of Apple's newest devices.

But investors will also be looking for color on the iPhone X, Apple's most expensive iPhone, which goes on sale on Friday. Strong pre-order activity and long backorder times suggests that it could be in short supply this next quarter.

Here are the key results Wall Street is expecting, according to Bloomberg data:

Q4 EPS (GAAP): $1.87 per share

Q4 Revenue: $50.5 billion vs Apple's forecast of between $49 billion and $52 billion

Gross margin: 37.91%

iPhone unit sales: 46.1 million