Protein Powder Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Premier Protein is the best-performing protein powder brand in July 2026, moving 130,000 units across 3 ASINs for 27.1% of Top 10 volume. Core Power follows with 100,000 units (20.8%), ahead of Vital Proteins on 100,000 units (20.8%).

With 7 brands splitting the Top 10 and 68.8% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $18.65 to $50.98, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, 2 ASINs forced its way in: B06ZZ3PJQD booked 30K units at $27.57, with ▲ 200.0% MoM change. On the growth side, B006N74O2Y leads positive momentum with ▲ 1400.0% MoM growth on 3K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.