Apple Inc. appears to be in an innovation rut and that’s one reason a D.A. Davidson analyst is taking a cautious view of the stock. Analyst Gil Luria picked up coverage of Apple shares AAPL, -0.62% with a neutral rating late Tuesday, warning that the company needs to get “unstuck” when it comes to generating exciting new things. “While Apple has continued to introduce new form factors, especially within the wearables category, the handset and watch form factors have seemed to plateau over the last 3-4 years ...