Flotek Industries’ (FTK) YTD returns were -27.3% as of May 15. In comparison, the Energy Select Sector SPDR ETF (XLE) has increased ~7.0% YTD. XLE tracks an index of US energy companies in the S&P 500 Index. The VanEck Vectors Oil Services ETF (OIH) has witnessed 9.2% YTD returns. OIH tracks an index of 25 OFS companies. The SPDR S&P 500 ETF (SPY), which represents the broader market, has produced 1.6% returns during the same period. So, Flotek Industries underperformed the OFS industry ETF and the broader energy industry ETFs.