William Blair analyst Ryan Merkel downgraded Fastenal (FAST), MSC Industrial (MSM) and Wesco (WCC) to Market Perform from Outperform while maintaining an Outperform rating on Systemax (SYX). With growth challenges rising distributor earnings estimates are too high for 2019 and 2020, Merkel tells investors in a research note. He believes "several industrial indicators are flashing yellow," including global trade volumes, durable goods orders, manufacturing inventory growth, and a strong U.S. dollar. Further, the analyst is concerned by trends in the automotive, oil and gas, mining, and machinery end-markets. Merkel believes stock valuations are risk given his "late-cycle concerns." He believes fair value for Fastenal is $72 per share, fair value for MSC Industrial is $75 per share and fair value for Wesco is $51 per share.