Pacific Crest cut its price target on Ambarella (AMBA) after the company reported stronger than expected Q4 results but provided lower than expected Q1 revenue guidance. The firm says that GoPro (GPRO) is weighing on Ambrella's results. However, the firm remains upbeat on Ambarella's longer term outlook ,saying that the company will benefit from its exposure to growth catalysts. The firm expects Ambarella to resume growing year-over-year in its October quarter, driven by a GoPro refresh and increased demand for IP security and drones. It keeps an Overweight rating on the shares.