Phillips 66 (PSX) has surged 59.3% in the past year compared with the industry’s 18.4% improvement. What's Favoring the Stock? PSX has a diversified business model, with a significant presence in businesses related to refining midstream, chemicals and marketing & specialties. In each of its operations, Phillips 66 has a solid footprint pertaining to safety, profitability, size and competitive strengths. It is focusing more on businesses like midstream, renewables and chemicals, which makes the business mode ...