International Organization of Securities Commissions (IOSCO)

The following Financial Services practice note provides comprehensive and up to date legal information covering:

  • International Organization of Securities Commissions (IOSCO)
  • Members
  • IOSCO's work
  • Recovery and resolution
  • Money market funds
  • Organisation and structure and key functions

International Organization of Securities Commissions (IOSCO)


The International Organization of Securities Commissions emerged in 1983 from a decision by several north and south American securities regulatory agencies. Its membership became increasingly global in 1984 and UK regulators were among the first non-American members. These days IOSCO members comprise and regulate, over 100 jurisdictions, which represents more than 95% of the world's securities markets.

IOSCO sets international standards for securities markets and is the main international cooperative forum for securities market regulatory agencies. In addition to its work on standards, IOSCO provides technical assistance, particularly for regulatory bodies for emerging securities markets.

IOSCO has produced several key measures that are important for ensuring cross-border cooperation, reducing global systemic risk, maintaining investor protection and driving fair and efficient securities markets. These measures include:

  1. a set of Objectives and Principles of Securities Regulation (IOSCO Principles) amounting to the international regulatory benchmarks for all securities markets

  2. a methodology (IOSCO Principles Assessment Methodology) allowing for objective assessment of the level of implementation of the IOSCO Principles and the development of practical action plans to correct identified deficiencies, and

  3. a multilateral memorandum of understanding (IOSCO MMoU) to facilitate cross-border enforcement and exchange of information among international securities regulators. This has become the benchmark for international cooperation among securities regulators.

Since 2010 a key strategic objective has been to expand the IOSCO MMoU

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