Look up buy-in or buy into in Wiktionary, the free dictionary.

Buying in may refer to:

• Buying in (poker), a tournament entrance fee
• Buying in (securities), a process in which a buyer whose seller fails to deliver the securities contracted for, can "buy in" the securities from a third party
• Management buy-in, when an outside management becomes a company's new management by buying it.
• "Buy-in" is a noun that means the acceptance and willingness to support or participate in something, such as a new policy or plan.

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