The Zacks Oil and Gas - Refining & Marketing industry plays a vital role in turning crude and other feedstocks into fuels and everyday products, but it remains a tough space to navigate. Margins are highly volatile and swing with inventories, demand patterns, imports, and refinery utilization. Small shifts in crack spreads or light-heavy and sweet-sour differentials can quickly change profitability. Unplanned outages, seasonal demand changes, and uneven product consumption only add to the uncertainty. Risin ...