What traders need to know about ICE’s 2025 margin changes

TL;DR

ICE is fundamentally overhauling its risk framework by replacing the legacy IRM 1 model with IRM 2. This transition, rolling out to primary energy contracts (oil, gas, power) on November 07, 2025, is a move from per-instrument margin calculation to a more sophisticated portfolio-based approach.

• Key change: IRM 2
  1. Method: Uses Filtered Historical Simulation (FHS), a Value-at-Risk (VaR) approach, which recognizes diversification and correlation between instruments.
  2. Benefit: For traders with diversified portfolios, this can lead to lower initial margin requirements, improving capital efficiency.
• Major innovation: Liquidity Risk Charge (LRC)
  1. IRM 2 adds the LRC, which accounts for the realistic cost of liquidating positions in stressed markets. It has two parts:
     • Concentration Charge (CC): Penalises positions that exceed size thresholds in illiquid contracts.
     • Bid-Ask Charge (BAC): Reflects the cost of crossing the bid-ask spread for all positions.
• Strategy for traders:
  1. Diversify: Spread risk across correlated instruments to benefit from IRM 2’s portfolio recognition.
  2. Optimise execution: Use privately negotiated trades like EFPs (Exchange for Physical) to manage basis risk or unwind exposure without triggering high concentration penalties or public market slippage.
  3. Use smarter platforms: Leverage digital platforms (like enmacc) that allow for structured OTC negotiation to integrate margin awareness directly into trading execution

For traders and risk managers in the energy markets, 2025 has been a year defined by continuous shifts in the risk landscape. At the heart of this evolution is ICE’s strategic rollout of a new risk framework. These changes are not just about adjusting rates; they represent a fundamental move towards a more sophisticated, portfolio-based approach to managing risk.

Here’s a breakdown of the key changes, their implications for traders, and the steps to navigate this new environment.

What is ICE Risk Model 2 (IRM 2), and how is it different from IRM 1?

IRM 2 replaces ICE’s legacy IRM 1 model with a portfolio-based approach to initial margin. Whereas IRM 1 assessed risk on an instrument-by-instrument basis, IRM 2 evaluates the entire portfolio, recognising diversification and correlations.

Key benefit: For traders with diversified positions, IRM 2 can lead to lower margin requirements, increasing capital efficiency.

How does IRM 2 calculate margin?

IRM 2 uses a Filtered Historical Simulation (FHS) approach to Value-at-Risk (VaR):

• Simulates potential P&L under different historical market scenarios.
• Filters historical returns by dividing them by past volatility and then rescales them with a forecast of current market volatility. This ensures risk estimates are responsive to current market conditions while still capturing historical market behaviour.
• Integrates anti-procyclicality features to avoid margin spikes during periods of market stress.

This method is already used in banking and asset management and aligns ICE with best-in-class risk management frameworks.

What is the Liquidity Risk Charge, and why does it matter?

One of the headline innovations in IRM 2 is the Liquidity Risk Charge (LRC). This addition brings a more realistic lens to the cost of liquidating positions in volatile or thin markets, a risk that was previously underrepresented in ICE’s margin framework. The total IRM 2 margin requirement is the sum of the market risk component and the liquidity risk charge.

The LRC is made up of two components:

• Concentration Charge (CC): applied to positions that exceed certain size thresholds. It directly addresses the risk associated with trying to exit a large position in a stressed market. For example, a trader long a sizeable volume in an illiquid prompt-month gas contract may now face materially higher margin requirements.
• Bid-Ask Charge (BAC): this applies to all positions, regardless of size, and reflects the cost of crossing the bid-ask spread. It connects a trader’s margin to the practical liquidity of the market, reinforcing that not all products carry the same ease of exit.

IRM 2 also includes a Correlation Stress Charge (CSC) to account for the potential for correlations between instruments to break down during market turmoil, as well as seasonality adjustments to reflect predictable patterns in energy markets better.

When does IRM 2 effect energy contracts

The transition to IRM 2 is part of a global, phased rollout across ICE’s U.S. and European clearing houses, starting with equity index futures in early 2022 and now extending into energy products.

In Europe, the rollout is taking place in stages:

• Freight contracts transitioned on Friday, 12 September 2025, with updated margin requirements reflected in the Monday, 15 September cash calls.
• Primary energy contracts (including oil, gas, and power) will follow after a short bedding-in period for Freight. The go-live date is confirmed for the close of business on Friday, November 07, 2025, with the new margin requirements reflected in calls on Monday, November 10, 2025. (ICE)

Strategies for navigating IRM 2

1. Diversify strategically

• spread risk across correlated instruments and time buckets
• avoid overconcentration in single products or expiries

2. Review EFP and OTC execution strategies

In this margin environment, execution method matters. Privately negotiated trades (like EFPs) offer a way to manage basis risk or unwind exposure without distorting public markets, and can help navigate concentration thresholds more effectively.

For example: Swapping an OTC power position for an exchange-cleared future via an EFP may help realign your margin profile without slippage or triggering a liquidity penalty.

3. Use smarter platforms

Execution venues that allow access to multiple counterparties, structured trade types, and real-time analytics become critical infrastructure.

Platforms like enmacc, which support digital negotiation of structured and OTC trades, can help:

• Execute trades without disturbing the public order book
• Reduce “leg risk” in complex positions
• Optimise for margin impact and capital usage

Tools for a smooth transition

To help market participants navigate this transition, ICE has provided several key resources:

• ICE Clearing Analytics (ICA):a new web-based platform that allows users to upload portfolios, run interactive margin calculations, and view detailed margin reports without needing to build an in-house system.
• Margin API: a REST API is available for firms with proprietary risk management systems, enabling programmatic margin calculations and automation.

As margin methods evolve, trading strategies and the platforms they rely on must evolve as well. Digital venues that offer transparency without sacrificing negotiation flexibility are becoming indispensable. For firms dealing with swing contracts, structured products, or physical delivery obligations, integrating margin awareness into trading execution is no longer optional; it’s a competitive advantage.