ISDA has published the ISDA SIMM® Methodology, version 2.6, with an effective date of December 2, 2023.
This version of SIMM includes updates based on the full recalibration and industry backtesting of the methodology. The SIMM methodology remains a central part of the SIMM Governance Framework that SIMM users are expected to adhere to.
The effective date of December 2, 2023 means that SIMM users should use SIMM version 2.6 to calculate the initial margin for Close of Business (COB) on Friday, December 1, 2023 onwards. This means that the first day for exchange of initial margin calculated using SIMM version 2.6 would be on Monday, December 4, 2023.
Documents (1) for ISDA Publishes ISDA SIMM® Methodology, Version 2.6
Latest
Trading Book Capital: Scott O'Malia Remarks
Trading Book Capital: Capital Conundrum, Navigating Basel III Endgame February 5, 2026 Welcoming Remarks Scott O’Malia, ISDA Chief Executive Good afternoon, and welcome to ISDA’s Trading Book Capital event – it’s great to be here in New York. We...
ISDA In Review – January 2026
A compendium of links to new documents, research papers, press releases and comment letters published by ISDA in January 2026.
ISDA Responds to RBI Unique Transaction Identifier (UTI) Proposals
On November 14, 2025, ISDA submitted comments to a Draft Circular from the Reserve Bank of India (RBI) proposing to mandate the global Unique Transaction Identifier (UTI) for all transactions in OTC markets for Rupee interest rate derivatives, forward contracts in Government...
How and Why Pension Funds Use Derivatives
With over $58 trillion in assets globally, pension fund managers are major participants in financial markets and play a vital role in helping to provide post-retirement incomes for plan employees. Meeting such an important goal requires careful consideration of investment...