Uniball Zento Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Sharpie is the best-performing uniball zento brand in July 2026, moving 30,000 units across 1 ASIN for 26.5% of Top 10 volume. Ddaowanx follows with 20,000 units (17.7%), ahead of PILOT on 16,000 units (14.2%).

Volume is spread across 8 brands, with the top three holding 58.4% 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 $7.99 to $11.99, 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, one ASIN forced its way in: B001CD9PQE booked 6K units at $7.49, with ▲ 100.0% MoM change. On the growth side, B0D9CRMYC9 leads positive momentum with ▲ 900.0% MoM growth on 1K units, with B0GTMVMM7Y close behind at ▲ 233.3% MoM 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.