You are in front of the board defending marketing as a driver of firm value, and the CFO wants the number that ties spend to valuation. The instinct is to lead with the advertising budget. That is the weaker card. When you pool four decades of studies, a 1% change in annual advertising spend barely moves firm value, while a 1% change in the brand-related assets (brand equity, brand perceptions) and customer-related assets (customer satisfaction, customer equity) you own moves it far more, with customer equity moving it most of all. Lead the board conversation with the assets marketing owns, not the budget it spends.
What moves the company's stock-market value is the brand and customer base you own; the ad budget you spend each year barely moves it.
When you make the case to the board that marketing builds firm value (the company's stock-market valuation), the strongest evidence points to your marketing assets, brand equity and customer equity, rather than the size of this year's advertising budget. Among those assets, customer equity carries the most weight.
Data chart
A 1% change in the brand and customer base a firm owns moves its stock-market value far more than a 1% change in annual ad spend, and the customer base moves it most.
Key takeaway
The brand and customer base you own move the company's stock-market value; the ad budget you spend each year barely does.
Source
Edeling, A., & Fischer, M. (2016). Marketing's impact on firm value: Generalizations from a meta-analysis. Journal of Marketing Research, 53(4), 515–534. https://doi.org/10.1509/jmr.14.0046
Evidence strength: Strong (488 firm-value estimates pooled from 83 studies, mostly US and North American public firms, 1971 to 2011 data). These findings speak most confidently to how advertising spend and brand and customer assets relate to the stock-market value of public firms (whether the effects differ for young versus mature firms is untested); less so to private firms, non-US markets, or to sales- or profit-based outcomes, which this research did not measure.