A recent average always lags behind a peak. Posto builds Black Friday and the holiday peak into every recommendation and follows each product's trend, so your orders rise before demand does.
See the 2027 seasonal buying calendarStart 30 days freeYou order for the weeks ahead using the weeks behind. In October, your recent sales say nothing about Black Friday, so an order sized on them comes up short just when it matters most.
The opposite happens in January. Last month's rush makes demand look bigger than it is, and you're left holding stock. Getting both right means planning for the season you're ordering into.
Black Friday 2026 is November 27. With a long lead time, the time to order is now.
Posto takes last year's event days out of your history first, so one big Black Friday doesn't inflate your everyday average.
For each product, it projects demand over your supplier's lead time and the days of cover you want, along the product's recent trend, applying any events that fall in that window.
When a peak falls in that window, the reorder point and order quantity rise to match. Products affected show a Seasonal badge, with the details in the breakdown.
Black Friday and the holiday peak are built in from the day you install, so your first recommendations already plan for them. Set your suppliers' lead times so the timing comes out right.
Not for the built-in events: Black Friday and the holiday peak apply from day one. Learning your store's own month-by-month pattern takes about a year of history, and Shopify lets Posto read about the last 60 days of orders. For other peaks, raise the days of cover on the products that spike a few weeks before you order.
Yes. Each built-in event's lift can be raised, lowered, or turned off for your store, and you can tell individual products to ignore events.
Yes, with a little setup. Posto follows each product's recent trend, but about 60 days of orders isn't enough to learn a once-a-year peak like summer or back to school. Raise the days of cover on the products that spike a few weeks before you order, and turn off the built-in events if they don't apply.
Set a longer lead time on the products you buy from that supplier to cover the closure while it applies, and Posto sizes those orders to match. A product's own lead time always wins. Our Lunar New Year guide explains how much extra time to allow.
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