This theme owns traditional energy across the full chain, built as a deliberate improvement on the XLE index rather than a copy of it. It makes three changes. It cuts the two supermajors from more than a third of the index to a quarter. It roughly doubles the weight in oilfield services — the strongest-performing sub-sector of this cycle, and the one the index systematically underweights. And it drops the pipeline names whose valuations now rest on selling gas to data centres, so this stays a clean energy position rather than a second AI position. The result spans integrated majors, shale producers, subsea and land services, Permian midstream and refining. What drives it: crude and refined-product prices, drilling activity and OPEC+ supply policy. The main risk is peace — a Middle East de-escalation would release supply and compress refining margins that currently sit near record highs.