Panel data on the Amazon subcategories we track daily. Median price, title length, CVR-14, review velocity, rank movement. The numbers behind every dispatch we publish.
A10 inferred signal weights
| Signal | Previous | Current | Δ | Weight |
|---|---|---|---|---|
| CVR-14 (Conversion velocity) | 0.21 | 0.32 | +0.11 | |
| Title relevance | 0.28 | 0.22 | -0.06 | |
| Review velocity | 0.16 | 0.20 | +0.04 | |
| Returns rate (inverse) | 0.09 | 0.10 | +0.01 | |
| PPC contribution | 0.08 | 0.06 | -0.02 | |
| Backend keywords | 0.07 | 0.07 | 0.00 | |
| Image quality | 0.06 | 0.06 | 0.00 | |
| A+ presence | 0.05 | 0.04 | -0.01 |
Inferred from ridge regression on 379,000 daily observations. R²=0.56. Magnitudes have ±2pp error band; direction is robust.
Category snapshot
| Subcategory | Listings | Median price | Median title | Median CVR-14 | Reviews | Δ rank (7d) | 12-wk trend |
|---|---|---|---|---|---|---|---|
| Vlogging microphones | 2,847 | $39 | 172 | 8.4% | 418 | -1.2 | |
| Smart light bulbs | 3,182 | $22 | 164 | 6.7% | 1,204 | +0.4 | |
| Cooking thermometers | 2,402 | $18 | 171 | 9.2% | 2,108 | -0.9 | |
| Hair dryers | 3,612 | $54 | 168 | 5.8% | 744 | +0.2 | |
| Electric kettles | 2,861 | $32 | 176 | 7.5% | 1,612 | -0.5 | |
| Yoga mats | 3,028 | $28 | 161 | 8.1% | 988 | -0.9 | |
| Bath caddies | 1,284 | $26 | 169 | 7.2% | 614 | +0.1 | |
| Wireless chargers | 2,147 | $24 | 165 | 6.4% | 1,432 | -0.3 | |
| Pet feeders | 1,408 | $42 | 170 | 5.4% | 522 | -0.1 |
Δ rank: negative = listings in the category gaining rank (moving closer to position 1). CVR-14 inferred from session-level conversion data.
| B0C***FK9 | Vlogging microphones | +28 | → #47 |
| B0D***LN2 | Yoga mats | +22 | → #31 |
| B0C***QW4 | Smart bulbs | +18 | → #19 |
| B0D***RT8 | Cooking thermometers | +17 | → #64 |
| B0C***JH6 | Bath caddies | +15 | → #28 |
| B0B***XK1 | Hair dryers | -41 | → #88 |
| B0C***PM3 | Vlogging microphones | -34 | → #92 |
| B0A***DL7 | Electric kettles | -28 | → #71 |
| B0C***VR2 | Yoga mats | -25 | → #53 |
| B0B***WS9 | Pet feeders | -22 | → #49 |
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