KEY POINTS
  • Deutsche Bank reiterated its hold rating on Apple shares, saying Wall Street consensus estimates for iPhone sales in fiscal 2019 are too high.
  • "We remain wary that investor expectations for the iPhone 8/X cycle are more optimistic than realistic," the firm's analyst said.
  • Apple stock has lost about $50 billion in market value so far this month, falling 6 percent. It is still one of the market's best-performing large-cap stocks so far this year, up 33 percent.

The market's anticipation of big sales of new iPhones drove Apple shares higher this year, but now one Wall Street firm says the smartphone maker's stock has risen too far.

Deutsche Bank reiterated its hold rating on Apple shares, saying Wall Street's consensus estimates for future iPhone sales are too high.