K2 Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
K2 sales on Amazon US totaled 624,000 units in July 2026 (▼ 8.9% vs. the prior month), generating an estimated $13,510,460 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 54.5% of unit volume and 52.5% of revenue, while a typical listing is priced at $21.78. The keyword itself pulled 48,339 Amazon queries over the same period (▲ 8.3% MoM).
Zooming out to the 12-month window ending July 2026, the k2 Top 50 moved 6,757,600 units and $145,901,034 in cumulative sales — an average of 563,133 units and $12,158,420 per month. Monthly throughput topped out at 684,600 units in June 2026 and dipped to 358,000 in May 2026, leaving the latest reading 26.1% higher than August 2025.
K2 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
624K
▼ 8.9% MoM
Monthly Revenue 2026/07
$13.5M
▼ 7.0% MoM
Top 10 Market Share 2026/07
54.5%
K2 Market Share & Sales Concentration on Amazon US — July 2026
The most-sold k2 listing on Amazon US in July 2026 is ASIN B07255MPRN (Brand: Sports Research), which sold 90,000 units at $23.95 apiece — equal to 14.4% of every unit tracked in this report and 1.8× the volume of the No. 2 listing.
The Top 10 ASINs account for 340,000 units and $7,096,400 in July 2026 — 54.5% of unit volume and 52.5% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'K2' on Amazon
July 2026
Is 54.5% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B07255MPRN
Sports Research® Vegan Vitamin D3 + K2 w/Coconut Oil, 60 Count Plantgels™ | Plant-Based Vitamin D 5000iu/125mcg & Soy-Free Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO
90K
▼ 10.0%vs. prior month
$2.2M
latest month
12-month trend
B09SR2KX9D
Nature Made Vitamin D3 K2 Supplement, 30 Softgels | Vitamin D 5000 IU (125 mcg) for Immune, Bone, Teeth and Muscle Health Support, 30 Day Supply
50K
▼ 28.6%vs. prior month
$634.5K
latest month
12-month trend
B0779M341X
Bronson Vitamin K2 D3 (MK7) Supplement 2-in1 D3 & K2 Complex, 60 Capsules | Bone, Immune & Heart Health Support, Gluten Free, Soy Free, Non-GMO, Vitamin D3 5000IU (125 mcg) & 90 mcg K2 MK-7
30K
▲ 0.0%vs. prior month
$285.6K
latest month
12-month trend
B07K3VFVJC
Nutricost Vitamin D3 + K2 (5000 IU D3 / 100mcg MK7) 120 Softgels, GMO-Free | Gluten-Free
30K
▲ 0.0%vs. prior month
$448.5K
latest month
12-month trend
B0B4BG1WDM
Dr. Berg 7-in-1 Vitamin D3 K2 5000 IU | Naturally Derived D3 | 4X Lab-Tested & Verified | High Absorption Formula | K2 D3 Vitamin Supplement | 60 Capsules
30K
▲ 0.0%vs. prior month
$539.7K
latest month
12-month trend
B0BZ8TMDQ5
Pure Encapsulations Vitamin D3 & K2, 120 Capsules | Bone and Vascular Health Support*, Immune Function Support*, Gluten-Free, Non-GMO, with Vitamin D3 and K2
30K
▼ 25.0%vs. prior month
$1.1M
latest month
12-month trend
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Best K2 Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Sports Research is the best-performing k2 brand in July 2026, moving 110,000 units across 2 ASINs for 32.4% of Top 10 volume. Nature Made follows with 50,000 units (14.7%), ahead of Bronson on 50,000 units (14.7%).
With 7 brands splitting the Top 10 and 61.8% 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 $12.48 to $31.60, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Sports Research
2 ASINs in Top 10
32.4%
Units
110K
Revenue
$2.9M
Avg. price
$31.60
B07255MPRN
$23.95·★4.8·54.5K revsSports Research® Vegan Vitamin D3 + K2 w/Coconut Oil, 60 Count Plantgels™ | Plant-Based Vitamin D 5000iu/125mcg & Soy-Free Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO
Units sold90KB07NXW4GW7
$39.25·★4.8·54.5K revsSports Research® Vegan Vitamin D3 + K2 w/Coconut Oil, 120 Count Plantgels™ | Plant-Based Vitamin D 5000iu/125mcg & Soy-Free Vitamin K 100mcg for Bone & Immune Support - Vegan Certified · Non-GMO
Units sold20K
Nature Made
1 ASIN in Top 10
14.7%
Units
50K
Revenue
$634.5K
Avg. price
$12.59
B09SR2KX9D
$12.59·★4.7·10.9K revsNature Made Vitamin D3 K2 Supplement, 30 Softgels | Vitamin D 5000 IU (125 mcg) for Immune, Bone, Teeth and Muscle Health Support, 30 Day Supply
Units sold50K
Bronson
2 ASINs in Top 10
14.7%
Units
50K
Revenue
$571.8K
Avg. price
$12.48
B0779M341X
$9.97·★4.7·41K revsBronson Vitamin K2 D3 (MK7) Supplement 2-in1 D3 & K2 Complex, 60 Capsules | Bone, Immune & Heart Health Support, Gluten Free, Soy Free, Non-GMO, Vitamin D3 5000IU (125 mcg) & 90 mcg K2 MK-7
Units sold30KB0771R5L28
$14.99·★4.7·41K revsBronson Vitamin K2 D3 (MK7) Supplement 2-in1 D3 & K2 Complex, 120 Capsules | Bone, Immune & Heart Health Support, Gluten Free, Soy Free, Non-GMO, Vitamin D3 5000IU (125 mcg) & 90 mcg K2 MK-7
Units sold20K
Trending K2 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, one ASIN forced its way in: B0771R5L28 booked 20K units at $14.99, with ▲ 100.0% MoM change. On the growth side, B0H2M1NC5X leads positive momentum with ▲ 400.0% MoM growth on 3K units, with B0F9F5JWXW close behind at ▲ 100.0% MoM on 20K 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.
B0771R5L28
Bronson Vitamin K2 D3 (MK7) Supplement 2-in1 D3 & K2 Complex, 120 Capsules | Bone, Immune & Heart Health Support, Gluten Free, Soy Free, Non-GMO, Vitamin D3 5000IU (125 mcg) & 90 mcg K2 MK-7
Price
$14.99
Rating
4.7
Reviews
41K
Latest month sales
B0H2M1NC5X
VEV Corefeel Vitamin D3 K2 10,000 IU, 200 mcg MK-7, 300 Coconut Oil Softgels
Price
$15.99
Rating
4.8
Reviews
160
Latest month sales
B0F9F5JWXW
VEV Corefeel Vitamin D3 K2 10,000 IU Magnesium Supplement, 300 Softgels | Vitamin K2 as MK-7, Coconut Oil, Magnesium Glycinate & Malate, Zinc Citrate
Unlock to view ASIN details and product titles
Price
$19.98
Rating
4.7
Reviews
2.9K
Latest month sales
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