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
ISDA Guidance – Delayed CPI-U Due to Government Shutdown
On November 7, 2025, ISDA published guidance addressing the potential delay in the release of the U.S. Consumer Price Index for All Urban Consumers (CPI-U) resulting from the current U.S. government shutdown. The guidance provides clarification on how such delays...
SPS Matrix – SPS Naming Convention
This document sets out the naming convention for how the Settlement Price Sources (“SPSs”), as defined in the ISDA Digital Asset Derivatives Settlement Price Matrix (the “SPS Matrix”), should be named to increase consistency and understandability. ISDA formalized the SPS...
A Global Blueprint for Market Risk Reform
The global financial crisis of 2007-2009 exposed fundamental weaknesses in how banks measured and managed risk, and the repercussions were felt by economies all over the world. In response, policymakers sought to rebuild trust and resilience in the global financial...
SwapsInfo Q3 2025 and Year-to-September 30, 2025
Trading activity in interest rate derivatives (IRD) and credit derivatives increased in the third quarter of 2025 compared with the same period in 2024, reflecting shifting monetary policy expectations and broader market conditions. IRD traded notional rose by more than...