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What Is Investment Banking?

By Lyle DalyUpdated Nov 4, 2025 at 2:44 PM | Fact-checked by Robin Hartill, CFP

Key Points

  • Investment banks manage IPOs, helping with valuation and handling initial trading.
  • In mergers, they offer crucial buy-side and sell-side advisory roles.
  • Since 1999, banks can operate both investment and commercial banking services.

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