ISDA has published the ISDA SIMM® Methodology, version 2.5, with an effective date of December 3, 2022.
This version of SIMM includes updates based on the full recalibration and industry backtesting of the methodology. The updates also include references to the ISDA SIMM Governance Framework (“Framework”) to emphasize that the SIMM methodology remains a central part of the Framework that SIMM users are expected to adhere to.
The effective date of December 3, 2022 means that SIMM users should use SIMM version 2.5 to calculate the initial margin for Close of Business (COB) on Friday, December 2, 2022 onwards. This means that the first day for exchange of initial margin calculated using SIMM version 2.5 would be on Monday, December 5, 2022.
Documents (1) for ISDA Publishes ISDA SIMM v2.5
Latest
Credit Derivatives Trading Activity Q3 2025
This report analyzes credit derivatives trading activity reported in Europe. The analysis shows European credit derivatives transactions based on the location of reporting venues (EU versus UK) and product type. The report also compares European-reported credit derivatives trading activity to...
Striking a Balance on EU Market Risk Capital
With US prudential regulators poised to publish a revised Basel III endgame proposal this year, and EU and UK regulators moving to finalize their own rules, ISDA is maintaining a laser focus on achieving a risk-appropriate capital framework that is...
Episode 53: The IOSCO Agenda
Global policymakers are focused on a wide-ranging set of issues, including NBFI and the rapid development of advanced technologies. IOSCO secretary general Rodrigo Buenaventura unpacks the regulatory agenda. Please view this page via Chrome to access the recording.
ISDA In Review – December 2025
A compendium of links to new documents, research papers, press releases and comment letters published by ISDA in December 2025.