https://www.reuters.com/article/us-apple-results/apple-warns-holiday-sales-may-disappoint-amid-weakness-in-emerging-markets-idUSKCN1N6629 >Apple Inc on Thursday warned that sales for the crucial holiday quarter would likely miss Wall Street expectations, which Chief Executive Tim Cook blamed on weakness in emerging markets, foreign exchange costs and uncertainty whether the iPhone maker can keep up with demand for new products.