So far, Halliburton (HAL) has fallen ~20% in 2018. The company has underperformed its peers during this period. Schlumberger (SLB) and Baker Hughes (BHGE) have fallen 14% and 5%, respectively, during the same period. National Oilwell Varco (NOV) has risen 15% YTD (year-to-date). The VanEck Vectors Oil Services ETF (OIH) has fallen 8% during the same period. Halliburton fell significantly after its second-quarter earnings. The company announced that it expects temporary softness in the North America market.