OpenCorporates

The Open Database Of The Corporate World
50 million companies, 65 jurisdictions
All Corporate Groupings

alcoa corporate grouping *

8 Companies in this corporate grouping

More info on alcoa at http://en.wikipedia.org/wiki/Alcoa
*A 'corporate grouping' is way of grouping of companies without having to say exactly what legal form that relationship takes (e.g. it may be a subsidiary of a subsidiary). In short, it’s what most humans (i.e. non tax-lawyers) think of when they think of a large company. You can add any company to a corporate grouping in under 20 seconds. (more details)

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