FT Professional Glossary
White knight
A person or an organisation that rescues a company from being bought by another company at too low a price
Example usage from an FT article:
Ever since Alimentation Couche-Tard’s formal approach to buy Seven & i Holdings in August, there has been speculation that a “white knight” bidder could emerge on the sidelines.
Excerpt from "The race for 7-Eleven is on"
