Here's the 'most important metric' as Wall Street gears up for Apple's upcoming earnings report

Here's the 'most important metric' as Wall Street gears up for Apple's upcoming earnings report

Customers trying out Apple's iPhone 15 at an Apple store in Shanghai, China.CFOTO/Future Publishing via Getty Images <ul> <li>Apple is scheduled to report its fiscal fourth-quarter earnings on Thurs… [+4065 chars]

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