Update: The stock dropped further this morning on Foxconn reporting weaker than expected profit growth, though had regained its opening losses at the time of writing.

AAPL’s stock price fell 5% in a single day yesterday in response to pessimistic supplier and analyst reports. That, coupled to unrelated concerns about Goldman Sachs and General Electric, saw the Dow Jones index slide more than 600 points …

Noted Apple analyst Ming-Chi Kuo yesterday slashed his earlier iPhone XR shipment estimates from 100M to 70M units.

That view was given weight by Lumentum, one of Apple’s Face ID component suppliers, which reported that an unnamed customer had cut orders by 30%. This was widely interpreted as a reference to the company’s largest customer: Apple. CNBC cited Wells Fargo as an example, the bank advising that ‘investors could consider Lumentum’s updated guide as reflecting as much as a 30% cut in Apple orders.’

Business Insider reports that JPMorgan reached the same conclusion.

The Lumentum news follows an earlier, and sketchier, Nikkei report.

“Led by the softer backdrop in the [emerging markets], the better than expected response to the iPhone XS and the iPhone XS MAX (the higher-end phones) is unable to entirely offset the more tepid than expected consumer response to iPhone XR (launched recently),” the analysts continued, downgrading their price target for Apple stock to $266 from $270.

Analysts were already concerned about Apple’s decision to cease reporting unit sales for iPhone, iPad and Mac, suggesting the company may believe that iPhone sales have peaked.

The WSJ reports that AAPL’s slide kicked off the fall in the Dow, but other factors also played a role.

The S&P index also dropped 2%, and the Nasdaq 2.8%.

And General Electric suffered its fourth consecutive decline after comments from the firm’s chief executive failed to assuage investors’ worries about the future of the industrial conglomerate.

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