Schlumberger’s (SLB) return was -7.7% in the week leading up to May 25. In comparison, in the same period, the Energy Select Sector SPDR ETF (XLE) fell nearly 4.5%. XLE tracks an index of US energy companies. The VanEck Vectors Oil Services ETF (OIH) saw a return of -7.4% in the period. OIH tracks an index of 25 oilfield equipment and services companies. SLB underperformed XLE but performed in line with OIH in the week.