International Organization of Securities Commissions Report on Trading Venues' Resilience

The International Organization of Securities Commissions has published its final report on market outages. The report examines key findings from recent market outages on listing trading venues in IOSCO jurisdictions and builds on past IOSCO work on operational resilience and business continuity planning to identify good practices for listing trading venues that may enhance market-wide resilience in the event of a market outage.

The good practices include: (a) establishing and publishing an outage plan; (b) implementing a communication plan, which provides, through an appropriate communication channel, initial notice (as soon as practicable) of the outage to market participants and the general public and, thereafter, regular updates to all market participants on the status of the outage and the recovery pathway; (c) communicating information relevant to the reopening of trading in a timely and simultaneous manner to all market participants, providing clarity on the status of orders and ensuring an adequate period of notice before the resumption of trading; (d) ensuring the processes and procedures that trading venues will follow to operate a closing auction and/or to establish alternative closing prices are published in the outage plan and communicated to all market participants during an outage; and (e) conducting and sharing with the relevant regulators a lessons-learnt exercise of the market outage and adopt a post-outage plan, with clearly defined timelines and allocation of responsibilities for remediation, designed to reduce the likelihood of future incidents and to improve the ability of the trading venue to effectively respond to outages.

While the good practices were primarily developed for equities listing trading venues, IOSCO is of the view that some of these good practices may have relevance more broadly, for example, in the context of non-listing trading venues and derivatives markets. It also recognises that, given the range of potential scenarios under which a market outage may occur, it is within individual trading venues' discretion whether and, if so, how to adopt the good practices.

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