The change reportedly won't affect Citi's relationship with creative and media agency of record Publicis.
The move follows AT&T's acquisition of DirecTV and its shift toward distribution of streaming television and related content.
The tennis superstar struggles with outdated equipment to highlight the importance of upgraded Intel technology.
Sets of numbers can be opaque and poorly understood if they lack integrity, and it can become obsolete quickly.
The list takes into account criteria such as company value, revenue and growth, market performance, consumer reach, standing among rivals, industry accolades and media buzz.