How to stock like a billion-dollar brand.

The problem.

Sellers fail at stocking in two opposite directions, and they fail at both at the same time. Some SKUs run out and crater rank. Other SKUs sit so long they trigger long-term storage fees on inventory you should have moved months ago.

Both are planning problems disguised as luck. Billion-dollar brands have a 5-person inventory planning team that runs simulations every day to prevent both. Most Amazon sellers have a spreadsheet that someone updates on Mondays.

1. Stockouts crater rank — and recovery costs more than the lost sales.

   Run out for 48 hours and your Best Sellers Rank slides. PPC has to work twice as hard to climb back. The lost rank costs you for weeks after you've restocked.
2. LTSF fees stack monthly on inventory you forgot about.

   Inventory aging past 271 days hits long-term storage fees. The fees compound monthly. By the time you notice, you're paying 3× what the inventory is worth to keep storing it.
3. Overstock ties up cash you could have spent on growth.

   Every dollar in unsold inventory is a dollar not spent on PPC, new SKUs, or PO planning. Sellers chronically over-order because under-ordering is more visible.
4. FBA capacity caps mean you can't always fix mistakes.

   Amazon limits your storage based on velocity. Run too lean and capacity contracts. Run too heavy and you can't accept new shipments. Either way, the system penalizes you.

How CorditeOS handles it.

Two agents work this stretch — one watching every ASIN's days-of-cover in real time, one flagging the SKUs you should be moving instead of restocking.

The average Amazon brand runs at 35% inventory carrying cost. The brands that plan it well run at 18%. The delta is mostly invisible until you're looking at a year of P&L.

What this looks like in practice.

You open CorditeOS. The Action Queue shows three stocking items, ranked by what's most at risk:

• B0CRK1 — stockout in 6 days. Velocity has spiked. The Inventory Agent has drafted a 240-unit FBA send that fits within your current capacity. Lead time accounted for. Approve, ship, done.
• B0LT22 — LTSF triggers in 18 days. 412 units have been sitting since Q1. The Storage Agent has drafted a clearance plan: 15% coupon for 30 days, projected sell-through covers 80%. The remaining 20% gets a removal order. Approve.
• B0SLW9 — flagged for procurement blocklist. 6 months of inventory still on hand, velocity flat. The Storage Agent has notified the Procurement Agent: do not include in next PO. No action needed from you.

Five minutes of work. The same review your competitor's inventory planning team spends three hours on every morning.