The Ecommerce Forecasting Mistake That Kills Growth

This week on the Hammersley Brothers Ecommerce Podcast, we dive into one of the most overlooked parts of scaling an ecommerce business properly: stock forecasting.Most founders think forecasting is just spreadsheets and guesswork. In reality, it’s one of the biggest drivers of growth, cashflow, profitability, and momentum. In this episode, we discuss:

Why stock forecasting feels like gambling for most ecommerce owners

The hidden danger of understocking your best sellers

Why running out of stock destroys your ROAS and growth

How long lead times completely change your business model

Why some brands intentionally choose lower margins for faster stock rotation

The importance of focusing on hero products instead of too many SKUs

How to improve your odds when ordering stock

The relationship between stock levels, Meta ads, and Google Ads

Why trending products can destroy forecasting models

How to identify winning products before scaling harder

The “yo-yo” effect that traps many ecommerce brands