11x17 Copy Paper Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Amazon Basics is the best-performing 11x17 copy paper brand in July 2026, moving 144,000 units across 3 ASINs for 53.5% of Top 10 volume. HP Papers follows with 80,000 units (29.7%), ahead of Hammermill on 33,000 units (12.3%).

With 4 brands splitting the Top 10 and 95.5% 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 $15.48 to $52.51, 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: B000V7V0BU booked 3K units at $18.00, with ▲ 200.0% MoM change. On the growth side, B00006L383 leads positive momentum with ▲ 100.0% MoM growth on 200 units, with B002HUJV5Q close behind at ▲ 100.0% MoM on 200 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.