Note: Nielsen/NetRatings AdRelevance service uses a proprietary methodology for estimating online advertising expenditures and takes into account only image-based technologies and advertising sold per CPM. Above data does not reflect house advertising activity, strategic partnerships between publishers and advertisers, or text units, paid search, sponsorships, email, units contained within applications (e.g., messengers and pre-rolls) or performance-based advertising.

CMOs: Tenure Discussion Should be Nuanced
CMO tenures at Fortune 500 companies are almost on par with the broader C-suite, and a short tenure doesn’t necessarily indicate poor performance.