Wallstreetcn analysis points out that Brent crude oil surpassed $100 per barrel on Wednesday (September 9), reaching a new high since May. The U.S. energy sector bucked the trend and strengthened, while the S&P 500 index fell by 0.5%. The analysis suggests that despite a cumulative gain of over 43% for energy stocks this year, their valuations remain among the lowest within the S&P 500 index. If high oil prices persist, it could lead to a valuation repair rally.