A look at how much inventory cover each ASIN has on hand today, the demand it has to survive, and what to commit for the Sept 2026–Feb 2027 peak. Source: Windsor.ai → Amazon Seller Central (FBA Inventory Health + Sales & Traffic), pulled 11 Jun 2026.
The case is simple: we need more weeks of supply on hand heading into peak. Two of the three highest-velocity ASINs are already at 0 weeks of cover, and today's coverage figures are calculated on slow summer velocity — when peak demand returns (Sept–Feb), the same inventory empties roughly 3–5× faster. Under-stocking now converts directly into out-of-stocks and lost sales during the most important six months of the year.
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active ASINs at 0 weeks of cover
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active ASINs under 8 weeks
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of peak demand from top 2 powders
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projected peak-season units (flat vs '25)
1 · Current weeks of supply on hand, by ASIN
FBA "weeks of cover" (30-day velocity basis) for every active ASIN. The shaded bands show risk zones; the dashed line is a sensible pre-peak target. Bars in red are stocked out or nearly so.
2 · Is coverage tightening? 30-day vs 90-day cover
Where the 30-day bar is shorter than the 90-day bar, recent velocity is accelerating and cover is eroding faster than the quarter-long average implies — an early warning even before peak hits.
3 · The demand this inventory has to cover
Actual units ordered per day during last year's peak ramp (Sept 1–5, 2025). The two powder SKUs alone moved ~550 units/day each — this is what "0 weeks of cover" is colliding with.
4 · Forecast — what to commit for Sept 2026 → Feb 2027
Built from each ASIN's actual Sept-2025 peak run-rate, projected across the 181-day peak window. Set your assumptions:
ASIN / Product
Peak units/day
Cover today
Season demand
+ Buffer
Units to commit
Total
Method & data notes
Honest about what's measured vs. modeled:
Weeks of cover & sales rank are pulled live from Amazon's FBA Inventory Health report (current snapshot, US). Peak velocity uses real units-ordered from the Sales & Traffic report for Sept 1–5, 2025.
Two limitations. (1) The connector only retains the current inventory snapshot — Amazon doesn't expose a stored history of weeks-of-cover, so a true day-by-day supply time series isn't available. (2) Historical Sales & Traffic ranges (for a full YoY-by-ASIN trend) currently time out on Windsor's side for every range except the cached Sept-2025 window. The forecast therefore anchors on last year's actual early-peak run-rate rather than a fitted multi-year curve; the YoY growth slider lets you stress-test it. New SKUs launched after Sept 2025 (Classic Chicken Powder, Variety+Guide) have no prior-peak baseline and are shown as "new — no '25 history."
Want the full historical time series and YoY-by-ASIN view? I can schedule an off-hours job that pulls the older months in small chunks (working around the timeout) and rebuild this with real trend lines.