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The act or practice of an underwriting or brokerage firm giving shares of an IPO, especially a popular issue, to major executives in some company unrelated to the company issuing the IPO. These executives return the favor by recommending that their clients do business to the underwriter or broker. The relationship is mutually beneficial because the executives profit from the shares in the IPO and the underwriter or broker profits from the new business. However, it is controversial and some believe spinning to be unethical. Spinning should not be confused with spinning off, which is a different concept altogether.