Low-sulfur fuel oil rises 3.3% in night session; fuel oil up 2.3%

The sharper move in low-sulfur fuel oil than in residual fuel oil points to a marine-fuel-specific bid rather than a broad crude-driven rally, since the two grades usually track each other closely. That divergence is the signal worth noting: it suggests tightening in the cleaner bunker segment, the kind of move that feeds directly into shipping and freight economics. Whether the premium holds through the next session, or unwinds as a one-night liquidity event, is the open question.