JPMorgan analyst Paul Coster downgraded GoPro to Neutral and lowered his price target for the shares to $8 from $9. The analyst sees a tough first half of 2018 for the company after its Q4 results missed expectations. GoPro has not made the ease-of-use breakthrough that will drive growth, and the product cycle in the second half of 2018 will likely only deliver incremental improvement in the experience, Coster tells investors in a research note. He lowered his estimates and moves to an enterprise value-to-sales valuation approach given the absence of profitability.