Phillips 66 is trading lower this morning, tracking a broader decline among its peers in the refining sector, including Marathon Petroleum and Valero Energy, which also saw losses in the previous session. The stock is currently experiencing mild pressure as investors weigh recent momentum against a backdrop of historically weak September seasonality and rising Treasury yields that may impact valuations. While the company was recently added to the Zacks Rank #1 Strong Buy list on September 8 and has been trading near its 52-week high of $263.76, market participants are currently exercising caution as the stock remains 17.2% above its 50-day moving average.