The 13-Week Rule: Why New Item Launches Live or Die in the First Quarter

New item launches are the ante for CPG growth, but most fail. A 37-year Walmart supplier veteran explains what separates the winners.

The launch plan looks airtight in the deck: distribution targets, marketing calendar, mod date circled. The problem is that the window to prove velocity is shorter than most supplier teams plan for, and the execution gaps that kill new items rarely show up in shipment data.

Storesight’s Henry Ho (Chief Strategy Officer) and Marc Yount (Chief Operating Officer) sit down with Tom McDonald, VP Team Leader for Walmart and Sam’s at Bayer Consumer Health, whose launch resume spans Tide Pods, Downy Unstoppables, Febreze, and Swiffer.

Tom shares a Procter & Gamble study of dozens of major new item introductions that revealed a hard truth about how quickly a launch’s fate gets locked in, and why missing a Walmart mod date is the kiss of death no marketing budget can fix. He also explains how the old day-one national launch model has given way to a new reality where e-commerce plays the role test markets once did, ratings and reviews carry the trust burden, and 15 to 40% of your potential buyers never see the shelf at all. For supplier teams staring down a launch calendar, this is a checklist of what to get right and a candid list of ways to get it wrong.

In this conversation, you’ll learn:

• What the 13-week rule means for your launch plan and why the clock starts earlier than you think
• Why missing the mod date puts your item at the mercy of an overwhelmed department manager
• How e-commerce launches at Walmart, Target, and Amazon replaced the old test market playbook
• What “launch and leave” looks like and why hitting distribution without velocity is a slow discontinuation
• Why on-shelf availability now determines whether pickup and delivery shoppers can buy you at all
• How defensive launches protect share when a subsegment threatens to swallow the category
• What role ratings, reviews, and content scores play in earning trial before a shopper ever reaches the shelf
• Why real-time data has turned launch management into a day-to-day pricing and correction discipline

Rather than treating a new item launch as a single make-or-break ship date, this conversation reframes it as a compressed proving window where in-store execution, omnichannel content, and rapid correction decide whether the item earns its second modular.

About Storesight
Formed by the merger of Field Agent and Shelfgram, Storesight delivers always-on retail intelligence for CPG brands. By combining a massive shopper network with advanced AI and image recognition, Storesight provides a continuous, objective view of in-store conditions, helping brands track new item launches, verify on-shelf availability and pricing in the weeks that decide an item’s fate, and turn shelf reality into action.

Today, Storesight captures shelf conditions across 480 categories, 5,000 brands, and 50,000 locations, and is trusted by 95% of the top 50 CPG companies in North America.

Learn more about Storesight: https://storesight.com

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