Top-10 brand concentration in the Amazon US cordless drill subcategory fell to 52.4% in Q1 2026. That’s down 410 basis points from Q4 2025 and the lowest reading we’ve recorded since we started tracking the category in 2021.
This is not a minor wobble. It’s a structural shift driven by two forces: private label expansion at the bottom of the funnel and use-case-modifier query growth at the top. We pulled Brand Analytics, Helium 10 Cerebro, and our internal indexing across 1,847 cordless drill ASINs to build this teardown.
Headline numbers
Subcategory GMV: $412M in Q1 2026, up 6.1% YoY. Unit volume up 9.4%, average selling price down 3.0%. Translation, the category grew on volume and lost pricing power.
Top-10 brand concentration: 52.4%, down from 56.5% in Q4. The four brands that lost the most share are the four you’d expect, DeWalt, Milwaukee, Makita, and Bosch, though Milwaukee held best at -90 bps. The brands that gained: Amazon Commercial (+180 bps), Amazon Basics (+110 bps), Hychika (+60 bps), and Avid Power (+40 bps). Three of the four are private label or private-label-adjacent.
Median TACoS across the top 50 cordless drill ASINs: 11.8%, up from 9.4% in Q4. CPCs on head terms (“cordless drill,” “18v drill,” “drill driver kit”) rose 22-31%. CPCs on use-case-modifier terms rose only 6-8%. This gap is the entire story of where margin lives in 2026.
Private label share: 14.7% of subcategory GMV, up from 12.6% in Q4. Continuing the broader pattern we documented in the Q1 2026 tools category teardown, hardware private label is moving faster than the marketplace average and cordless drills are leading the move.
Review velocity: median monthly review count for top 50 ASINs was 142 in Q1 2026, versus 118 in Q4 2025. The growth came almost entirely from Amazon Vine activity on private label SKUs. Legacy brands held flat or declined on review velocity, which is half of why they lost share, the algorithm reads review acceleration as a relevance signal, and private label is accelerating while legacy brands are coasting.
The use-case-modifier query shift
This is the finding most brands are missing. Search query volume on head terms in cordless drills was flat YoY. Search query volume on use-case-modifier terms grew 38%. The shift is concentrated in five modifier patterns:
“cordless drill for [task]”, examples: cabinet installation, deck building, drywall, metal, concrete. Up 41% YoY.
“cordless drill with [feature]”, examples: brushless motor, hammer function, LED light, side handle. Up 33% YoY.
“cordless drill under $[price]”, examples: under $50, under $100, under $150. Up 52% YoY (this is where private label hunts).
“compact cordless drill for [user]”, examples: women, beginners, electricians, plumbers. Up 29% YoY.
“cordless drill compatible with [battery]”, examples: DeWalt 20v, Milwaukee M18, Ryobi One+. Up 44% YoY (this is where battery-platform brands have a moat private label cannot replicate).
The implication for media planning is direct. Brands spending 70%+ of their SP and SB budget on head terms are paying premium CPCs to compete with private label on the queries where private label is structurally advantaged. Brands reallocating to use-case-modifier coverage are buying conversions at 40-60% lower CPC and meaningfully higher conversion rates.
The reason Cosmo and Rufus reward modifier queries is mechanical. Modifier queries carry richer intent signals, the system knows what the buyer is trying to do, not just what they’re searching for. ASINs that anchor their listing copy to those intent signals win the re-ranking. ASINs that read like generic spec sheets get filtered out of intent clusters even when they technically match the keyword.
Share movement by price tier
Splitting the subcategory by price tier surfaces the real story. Sub-$60 tier: brand concentration collapsed from 48% to 41%, private label took most of the spread. $60-$120 tier: concentration held at roughly 54%, the most stable band. $120-$220 tier: concentration tightened to 61% as Milwaukee and DeWalt consolidated against weaker mid-tier brands. $220+ tier: concentration tightened further to 68%, premium buyers stayed with established brands.
The brands losing most are not the premium brands. They’re the mid-priced brands that built share in 2020-2022 by riding category growth and now have neither the price advantage of private label nor the brand equity of premium. We expect 2-3 of the brands currently in positions 11-20 of the cordless drill ranking to lose 50%+ of their share by Q4 2026.
Geographic patterns matter too. The share loss for legacy brands is concentrated in zip codes where Amazon’s same-day and next-day delivery footprint is densest. Buyers in those zip codes are 18% more likely to choose Amazon-owned SKUs because the fulfillment confidence is implicit. Brands with their own FBM operations or limited Prime coverage are losing share twice over, once to private label and once to faster fulfillment.
What this means for operators
If you operate a cordless drill brand in 2026, three actions are non-optional. First, audit your share of voice on the top 50 use-case-modifier queries. We see most mid-tier brands sitting at 1-4% SOV when the math says they should be at 8-12%. Second, defend the $60-$120 tier with bundles, not price cuts, that band is your most stable revenue and price cuts will destroy contribution margin. Third, pull your battery-platform compatibility coverage. If you’re a sub-brand selling Ryobi-compatible or DeWalt-compatible accessories, “cordless drill compatible with [battery]” is the highest-conversion search term family in the entire subcategory.
A fourth action worth considering: invest disproportionately in SB video creative tied to use-case demonstration. We’ve covered the SB video decay curve in a separate teardown, the headline is that use-case-demonstration creative decays 28 percentage points slower than feature-montage creative in cordless tools. If you’re going to spend on video, spend it on creative that lines up with how Cosmo is re-ranking the category.
What we expect through Q4 2026
Three forecasts. First, private label share in the sub-$60 tier will pass 30% by Q4, it’s at 24% today and the trajectory is steady. Second, the $60-$120 tier will see a brand consolidation event by mid-Q3 as 2-3 mid-priced brands either pivot to specialty positioning or exit. Third, premium tier brands will hold but only the ones that invest in use-case-modifier coverage. The premium tier is not immune to the query shift, it’s just slower to feel it.
We’ll publish the full anonymized share movement dataset to subscribers in May. Subscribe to the Operator Brief if you want it.
Related Reading
- What 18 Outdoor Brands’ Q1 2026 PPC Data Says About Category-Anchor Query Inflation
- The Case Against Amazon-Native Creative for Outdoor Brands
- Q2 2026 Outdoor Category Teardown: What’s Gaining Share, What’s Losing It
- Modeling 2026 Outdoor Sell-Through Against Pre-COVID Baselines
- See our Amazon management for outdoor and hardware brands.