Maximum % ACV measures a brand or item’s maximum distribution in a market (like a retailer or channel) over a period of time. This number will represent a percent presence in the market between 0% and 100%. If a brand or item has a Maximum % ACV of 50%, then you can say that at some point during the time period the brand or item was present in about half of the marketplace. A Max % ACV of 99% or 100% would mean that the brand or item was present in all of the marketplace. Max % ACV is best used for timeframes of 4 weeks or less.