How sales velocity works
"Velocity" is just how fast a product sells. It's the engine behind every reorder suggestion: it decides when a product needs reordering and how much to buy. Stockwik calculates it from your actual Shopify sales history, so you don't have to estimate anything.
Blended velocity (your normal pace)
Stockwik's main measure is blended velocity — your average weekly sales, weighted so that recent sales count more than older ones. That weighting matters: if a product has picked up (or slowed down) lately, the number reflects today's reality rather than being dragged around by stale history.
From blended velocity, Stockwik derives:
- Daily sales = blended weekly velocity ÷ 7 — the figure used in the reorder math.
- Days of stock = available ÷ daily sales — how long your current stock will last at the current pace.
Peak velocity (your busy stretch)
Some products sell evenly all year; others have a clear busy season. So Stockwik also tracks peak velocity — the product's sales rate during its busiest sustained stretch. This is what lets it plan ahead for seasonal demand instead of being caught short.
Seasonal products
When a product's peak is noticeably higher than its everyday pace, Stockwik flags it as seasonal and adjusts automatically:
- In its peak season, the order-up-to (maximum) level is calculated from the peak rate — so you build stock up before the rush.
- Outside peak season, it reverts to the normal blended rate — so you're not sitting on peak-sized inventory in the quiet months.
This is detected from the product's own sales pattern; there's nothing to configure. You can see whether a product is treated as seasonal on its detail page.
What feeds velocity
Velocity is calculated from the sales Stockwik pulls from Shopify — a rolling full year of order history. Refunds that restock are netted out, and cancelled orders are excluded, so the rate reflects genuine demand. Sales stay current each time you run a Sync.