Rainbows Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

rabbitgoo is the best-performing rainbows brand in July 2026, moving 10,000 units across 1 ASIN for 18.5% of Top 10 volume. Liquid I.V. follows with 10,000 units (18.5%), ahead of 365 by Whole Foods Market on 9,000 units (16.7%).

Volume is spread across 8 brands, with the top three holding 53.7% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $2.99 to $21.35, 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. On the growth side, B005J02AEU leads positive momentum with ▲ 600.0% MoM growth on 700 units, with B016FPS53C close behind at ▲ 500.0% MoM on 300 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.