AP Style Company, Companies

AP Style rules hold that you should use “Co.” or “Cos.” when a business uses either word at the end of its proper name. For example,

  • Ford Motor Co.
  • American Broadcasting Cos.

If “company” or “companies” appears alone in second reference, spell out the full word.

The forms for possessive are seen in the examples below,

  • Ford Motor Co.’s inventory
  • American Broadcasting Cos.’ profits

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