Darling Ingredients (DAR) is trading lower as the market digests the EPA’s final Renewable Fuel Standard volumes for 2026 and 2027, published April 1, 2026. For Darling, the read-through is direct: its Fuel economics are largely driven by Diamond Green Diesel (the 50/50 JV with Valero), where profitability is heavily influenced by D4 RIN values and other credit markets that can move sharply after major policy decisions. (epa.gov)

Diamond Green Diesel’s results flow through Darling as equity income/loss rather than consolidated segment revenue, so relatively small swings in renewable diesel margin inputs can create outsized volatility in reported earnings and investor sentiment. With the EPA now locking in 2026–2027 volumes, traders are reassessing the supply/demand balance for compliance credits and what that implies for near-term margins. (epa.gov)

Attention now shifts to Darling’s next scheduled earnings report on April 23, 2026, where the company’s commentary on renewable diesel/SAF margins and run-rates at Diamond Green Diesel could determine whether today’s drop extends or stabilizes. The EPA decision is a key “macro” input, but the stock’s next catalyst is whether management signals improving profitability into mid-2026 or continued stop-start economics for renewable fuels. (reddit.com)