ISDA has published the ISDA SIMM® Methodology, version 2.4, with an effective date of December 4, 2021.
The effective date of December 4, 2021 means that SIMM users should use SIMM version 2.4 to calculate the initial margin for their portfolios for close of business on Friday, December 3, 2021 onwards. This means that the first day for the exchange of initial margin calculated using SIMM 2.4 would be on Monday, December 6, 2021.
This version of SIMM includes updates based on the full recalibration and industry backtesting of the methodology.
Documents (1) for ISDA Publishes ISDA SIMM v2.4
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ISDA In Review – August 2026
A compendium of links to new documents, research papers, press releases and comment letters published by ISDA in August 2026.
Remove Bureaucracy from Cross-margin Approvals
Cross-margining programs play a critical role in financial markets. By ensuring margin requirements more closely reflect the actual risk of a portfolio of products, they reduce liquidity strain and improve market efficiency, both of which will become even more important...
Joint Response on CCP Resolution
On September 7, ISDA and FIA responded to a Bank of England (BOE) discussion paper on central counterparty (CCP) resolution. The associations support greater clarity on valuation capabilities prior to a crisis scenario and the boundary between recovery and resolution,...
Expanding Legal Agreement Coverage in the CDM
This paper examines the recent extension of the Common Domain Model (CDM)1 to represent two of the most significant, and previously undeveloped, areas of its legal agreement model: umbrella agreements and contract amendments. Umbrella agreements are widely used to document...