The whey market is converging and pulling apart at the same time. WPC80 keeps falling, and because it was the product that pushed the whole protein market up in the first place, most whey products look slightly weaker heading into the end of the year. That does not mean every whey price is lower. Buyers looking for a specific spec of sweet whey powder have to pay up, certain grades of whey protein isolate are hard to find for Q4, and lactose for Q4 is easy to get on a broad spec but can cost much more than in Q3 if a supplier has run out.
Sweet whey firms on both sides of the Atlantic
US whey has been priced well below European product, and export demand for it has risen significantly through the year. That export pull has lifted US sweet whey powder prices to their highest level of 2026, and the gap between Europe and the US is closing quickly. US production remains good, but demand is running slightly ahead of it.
European sweet whey is holding firm too. Some Q4 demand is still uncovered and there is not enough product to meet it, after strong export demand over the past few quarters absorbed much of the available volume. Higher-grade specs are available in much lower quantities, which keeps the top of the price range high. Vesper expects sweet whey to move slightly higher in both regions, without a sharp move from here.
Proteins are still under pressure
WPC80 fell extremely sharply, with plenty of Q4 volume still looking for a home and buyers holding off as long as they can. Some EU sellers covered their forward positions in time, but a large part of the market did not, and those producers are now actively looking for buyers at lower prices. The pressure is self-reinforcing: every lower offer encourages buyers to wait longer, which pushes the next seller lower. The first signs of stabilization are appearing, and Vesper expects WPC80 to weaken further, but not dramatically, as it approaches MPC85 levels.
WPI feels considerably more stable, supported by its wide range of specs, but it cannot stay unaffected while WPC80 falls this quickly. In Europe the spread between the two has widened significantly, and commodity-grade WPI has started to come down. Limited spot availability is keeping US pricing stable for now.
The byproducts are softening as well. The additional WPC production that came online has brought more whey permeate with it, and export demand, while good, is no longer enough to absorb the extra volume. More permeate also means more lactose, and with much of the Q4 demand already covered, lactose looks more balanced than it has in some time after easing slightly in recent weeks. Vesper expects permeate to ease slightly and lactose to stay broadly stable with a slight downward bias.
