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# Article 59 — Frequency

**Commission Delegated Regulation (EU) No 153/2013 · binding · OJ L 52, 23.2.2013 · dated 19 Dec 2012 [in force]**

*In force · Consolidated version of 7 March 2024 · Verified 9 Nov 2026 · [Official source](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02013R0153-20240307)*

1. <a id="art-59-p-1"></a>A CCP shall conduct a comprehensive validation of its models and their methodologies at least annually.

2. <a id="art-59-p-2"></a>A CCP shall conduct a comprehensive validation of its liquidity risk management framework at least annually.

3. <a id="art-59-p-3"></a>A CCP shall conduct a full validation of its valuation models at least annually.

4. <a id="art-59-p-4"></a>A CCP shall review the appropriateness of the policies specified in Article 51 at least annually.

5. <a id="art-59-p-5"></a>A CCP shall analyse and monitor its model performance and financial resources coverage in the event of defaults by back testing margin coverage at least daily and conducting at least daily stress testing using standard and predetermined parameters and assumptions.

6. <a id="art-59-p-6"></a>A CCP shall analyse and monitor its liquidity risk management framework by conducting at least daily stress tests of its liquid financial resources.

7. <a id="art-59-p-7"></a>A CCP shall conduct a detailed thorough analysis of testing results at least on a monthly basis in order to ensure its stress testing scenarios, models and liquidity risk management framework, underlying parameters and assumptions are correct. Such analysis shall be conducted more frequently in stressed market conditions, including when the financial instruments cleared or markets served in general display high volatility, become less liquid, or when the size or concentrations of positions held by its clearing members increase significantly or when it is anticipated that a CCP will encounter stressed market conditions.

8. <a id="art-59-p-8"></a>Sensitivity analysis shall be conducted at least monthly, using the results of sensitivity tests. This analysis should be conducted more frequently when markets are unusually volatile or less liquid or when the size or concentrations of positions held by its clearing members increase significantly.

9. <a id="art-59-p-9"></a>A CCP shall test offsets among financial instruments and how correlations perform during periods of actual and hypothetical severe market conditions at least annually.

10. <a id="art-59-p-10"></a>A CCP’s haircuts shall be tested at least monthly.

11. <a id="art-59-p-11"></a>A CCP shall conduct reverse stress tests at least quarterly.

12. <a id="art-59-p-12"></a>A CCP shall test and review its default procedures at least quarterly and perform simulation exercises at least annually, in accordance with Article 61. A CCP shall also perform simulation exercises following any material change to its default procedures.

**SECTION 9 — Time horizons used when performing tests**