Kokuyo Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Kokuyo sales on Amazon US totaled 14,700 units in July 2026 (▲ 127.9% vs. the prior month), generating an estimated $203,012 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 60.5% of unit volume and 68.1% of revenue, while a typical listing is priced at $13.00. The keyword itself pulled 28,097 Amazon queries over the same period (▲ 29.9% MoM).
Zooming out to the 12-month window ending July 2026, the kokuyo Top 50 moved 113,050 units and $1,511,069 in cumulative sales — an average of 9,421 units and $125,922 per month. Monthly throughput topped out at 30,850 units in August 2025 and dipped to 3,050 in May 2026, leaving the latest reading 52.4% lower than August 2025.
Kokuyo Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
14.7K
▲ 127.9% MoM
Monthly Revenue 2026/07
$203K
▲ 150.7% MoM
Top 10 Market Share 2026/07
60.5%
Kokuyo Market Share & Sales Concentration on Amazon US — July 2026
The most-sold kokuyo listing on Amazon US in July 2026 is ASIN B079CY4R9M (Brand: KOKUYO), which sold 2,000 units at $28.41 apiece — equal to 13.6% of every unit tracked in this report and 2.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 8,900 units and $138,248 in July 2026 — 60.5% of unit volume and 68.1% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Kokuyo' on Amazon
July 2026
Is 60.5% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B079CY4R9M
Kokuyo Campus Smart Ring Binders 3 Pack, B5 Notebook Binder +100 Sheet 6mm Dot Ruled Refiller Paper, 25 Sheet Capacity, 26 Rings, Light Color, Perfect for Work, Study & Journal
2K
▲ 300.0%vs. prior month
$44.9K
latest month
12-month trend
B0C5J5KMNX
KOKUYO Composition Notebooks, 3 Pack Campus 9-3/4" x 7-1/2" Comp Book with College Ruled, 80 Sheets, Pink Blue Lavender School Lined Notebook Journal for Work Study Note Taking (WSG-NO-308CG1×3)
1K
▲ 42.9%vs. prior month
$14.6K
latest month
12-month trend
B0C5JCJ8JZ
KOKUYO Spiral Notebooks, 3 Pack 10-1/2" x 8" Lined Notebook College Ruled | Campus Subject Notebooks, 80 Sheets, 3 Holes School Japanese Ring Journal for Work Study Note Taking, Pink Blue Green
1K
▲ 66.7%vs. prior month
$16K
latest month
12-month trend
B001GSQZ5Y
Kokuyo Campus Loose Leaf Paper, B5 Filler Paper with B 6mm Dot Ruled, 100 Sheets 75 GSM Sarasara Smooth Writing, 26 Holes, 10-1/4"x7-1/4” Binder Notebook Bleed Resistant Paper (NO-836BT)
1K
▲ 150.0%vs. prior month
$5K
latest month
12-month trend
B0012O7K8I
Kokuyo Campus Loose Leaf Paper, B5 Filler Paper with 5x5 Graph, 50 Sheets 75 GSM Sarasara Smooth Writing, 26 Holes, 10-1/4"x7-1/4” Binder Notebook Bleed Resistant Paper (NO-837S-5N)
1K
▲ 150.0%vs. prior month
$4.5K
latest month
12-month trend
B0012ONGHM
KOKUYO Campus Composition Notebook, 1 Pack B5 Lined Notebooks with 100 Sheets 6mm Ruled Paper, 7 x 10 inch Notebook for School and Work, School Supplies Comp Book for Journal Diary
800
▲ 166.7%vs. prior month
$7.2K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Trending Kokuyo Products — Growth Leaders & New Top 10 Entrants
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: B0BXPN4GNN booked 600 units at $49.00, with ▲ 1100.0% MoM change. On the growth side, B079CY4R9M leads positive momentum with ▲ 300.0% MoM growth on 2K 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.
B0BXPN4GNN
KOKUYO Campus Smart Ring Binders 5 Pack, B5 Binder Notebooks, 60 Sheets Capacity, 26 Holes Slim Binder Folder and 300 Sheets Campus Loose-leaf Paper for Work, Study and Journal
Price
$49.00
Rating
4.4
Reviews
199
Latest month sales
B07G6ZTT33
Kokuyo Campus Smart Ring Binder, B5 Clear Refillable Binder Notebook 26 Holes with 10 Extra Loose-Leaf Paper, Up to 60 Filler Papers for Work & Study, Japan Import (RU-SP706T)
Price
$8.99
Rating
4.6
Reviews
1.5K
Latest month sales
B079CY4R9M
Kokuyo Campus Smart Ring Binders 3 Pack, B5 Notebook Binder +100 Sheet 6mm Dot Ruled Refiller Paper, 25 Sheet Capacity, 26 Rings, Light Color, Perfect for Work, Study & Journal
Unlock to view ASIN details and product titles
Price
$28.41
Rating
4.6
Reviews
1.8K
Latest month sales
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