TTM

TTM is a widely used financial and retail metric that represents the most recent 12 months of data, updated continuously rather than tied to a calendar year.
It provides a more accurate view of performance by including the last full year of activity regardless of seasonality or month boundaries.

On Amazon, TTM is used to track:

• sales and shipped revenue
• profitability (PPM, PPPU, ASP trends)
• advertising performance (ROAS, ACOS)
• traffic and glance view patterns
• inventory health (STR, OOS, Buyable percent)
• category growth and brand competitiveness

Why TTM is valuable:

• Includes all seasonal peaks like Prime Day, Turkey Five, Q4
• Smooths out short term volatility
• Reflects complete performance cycles
• Helps identify structural growth or decline
• More reliable than month or quarter based snapshots

Where TTM is used:

• Vendor scorecards
• QBR and WBR reviews
• Pricing and margin strategy
• Year over year comparisons
• Demand forecasts
• Category level benchmarking

Example:
If today is May 10, 2026, the TTM window covers May 11, 2025 through May 10, 2026.
A vendor analyzing TTM shipped revenue sees a clear rising trend compared to the previous TTM window, confirming consistent category growth.

Why It Matters:
TTM provides the clearest long range picture of business performance, eliminating the noise of one time events and giving sellers and vendors strong strategic insight into growth, seasonality, and performance quality.

In short:
TTM (Trailing Twelve Months) is the rolling 12 month period Amazon uses to assess long term sales, advertising, and inventory performance.