Belief of a company in the red? Quite the opposite (5)

I believe the answer is:

credo

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'belief' is the definition.
(credo is a kind of belief)

I don't understand how the rest of the clue works.

(Other definitions for credo that I've seen before include "Mass movement" , "piece of sacred music" , "Part of the Latin Mass" , "mission statement" , "music in church" .)

I've seen this clue in The Globe and Mail.

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