DBRS Morningstar Upgrades and Confirms Ratings of Cartesian Residential Mortgages 4 S.A.

DBRS Ratings GmbH (DBRS Morningstar) took the following rating actions on the Notes issued by Cartesian Residential Mortgages 4 S.A. (the Issuer):

-- Class A Notes confirmed at AAA (sf)
-- Class B Notes confirmed at AA (high) (sf)
-- Class C Notes upgraded to AA (low) (sf) from A (sf)
-- Class D Notes upgraded to A (sf) from BBB (high) (sf)

The ratings of the Class A Notes and Class B Notes address the timely payment of interest and the ultimate payment of principal on or before the legal final maturity date in November 2054. The rating of the Class C Notes addresses the ultimate payment of interest while junior, the timely payment of interest when the notes become the most senior outstanding, and the ultimate repayment of principal. The rating of the Class D Notes addresses the ultimate payment of interest and principal.

The confirmations and upgrades follow an annual review of the transaction and are based on the following analytical considerations:
-- Portfolio performance, in terms of delinquencies, defaults, and losses, as of the May 2021 payment date;
-- Portfolio default rate (PD), loss given default (LGD), and expected loss assumptions on the remaining receivables;
-- Current available credit enhancement to the notes to cover the expected losses at their respective rating levels; and
-- Current economic environment and an assessment of sustainable performance, as a result of the Coronavirus Disease (COVID-19) pandemic.

The Issuer is a securitisation of prime Dutch residential mortgage loans granted by Venn Hypotheken B.V. The portfolio is serviced by Ember VRM S.a.r.l., with Stater Nederland B.V. and HypoCasso B.V. acting as subservicers.

PORTFOLIO PERFORMANCE
As of May 2021, loans two to three months in arrears represented 0.1% of the outstanding portfolio balance, down from 0.2% in May 2020. The 90+-day delinquency ratio was 0.0%, down from 0.1% in May 2020. As of May 2021, the cumulative default ratio was 0.0%.

PORTFOLIO ASSUMPTIONS AND KEY DRIVERS
DBRS Morningstar conducted a loan-by-loan analysis of the remaining pool of receivables and updated its base case PD and LGD assumptions to 2.7% and 10.6%, respectively.

CREDIT ENHANCEMENT
As of the May 2021 payment date, credit enhancement to the Class A, Class B, Class C, and Class D Notes was 11.8%, 8.2%, 5.7%, and 4.1%, respectively, up from 11.0%, 7.6%, 5.3%, and 3.8%, at the initial rating, respectively.

The transaction benefits from a reserve fund of EUR 7.1 million. The entire reserve fund is available to cover senior fees, senior swap payments, interest shortfalls on the Class A and Class B Notes, and the Class A principal deficiency ledger (PDL) before being replenished to its first target level (1.25% of the outstanding Class A and Class B Notes). The remaining reserve balance is available to cover interest shortfalls on the Class C and Class D Notes in addition to the PDLs on the Class B, Class C, and Class D Notes before being replenished to its second target level (2.0% of the outstanding Class A to Class E Notes, subject to a floor of EUR 100,000).

At closing, a prefunding reserve was funded with the overissuance of the notes to EUR 44.5 million and was used to purchase additional mortgages loans during the prefunding period prior to the first payment date.

Citibank Europe plc – Luxembourg Branch (Citibank) and Citibank N.A., London Branch act as the Issuer Account Bank and Issuer Account Agent for the transaction, respectively. Based on DBRS Morningstar’s private rating on Citibank, the downgrade provisions outlined in the transaction documents, and other mitigating factors inherent in the transaction structure, DBRS Morningstar considers the risk arising from the exposure to the account bank to be consistent with the rating assigned to the Class A Notes, as described in DBRS Morningstar's "Legal Criteria for European Structured Finance Transactions" methodology.

BNP Paribas SA acts as the swap counterparty for the transaction. DBRS Morningstar's public Long Term Critical Obligations Rating on BNP Paribas SA at AA (high) is above the First Rating Threshold as described in DBRS Morningstar's "Derivative Criteria for European Structured Finance Transactions" methodology.

DBRS Morningstar analysed the transaction structure in Intex DealMaker.

The Coronavirus Disease (COVID-19) and the resulting isolation measures have caused an economic contraction, leading in some cases to increases in unemployment rates and income reductions for borrowers. DBRS Morningstar anticipates that delinquencies may continue to increase in the coming months for many structured finance transactions, some meaningfully. The ratings are based on additional analysis and, where appropriate, adjustments to expected performance as a result of the global efforts to contain the spread of the coronavirus. For this transaction, DBRS Morningstar increased its expected PD for self-employed borrowers and conducted additional sensitivity analysis to determine that the transaction benefits from sufficient liquidity support to withstand potential high levels of payment holidays in the portfolio.

On 16 April 2020, the DBRS Morningstar Sovereign group released a set of macroeconomic scenarios for the 2020–22 period in select economies. These scenarios were last updated on 18 June 2021. For details, see the following commentaries: https://www.dbrsmorningstar.com/research/380281/global-macroeconomic-scenarios-june-2021-update and https://www.dbrsmorningstar.com/research/359903/global-macroeconomic-scenarios-application-to-credit-ratings. The DBRS Morningstar analysis considered impacts consistent with the moderate scenario in the referenced reports.

On 14 June 2021, DBRS Morningstar updated its 5 May 2020 commentary outlining the impact of the coronavirus crisis on performance of DBRS Morningstar-rated RMBS transactions in Europe one year on. For more details, please see: https://www.dbrsmorningstar.com/research/380094/the-impact-of-covid-19-on-european-mortgage-performance-one-year-on and https://www.dbrsmorningstar.com/research/360599/european-rmbs-transactions-risk-exposure-to-coronavirus-covid-19-effect.

For more information regarding rating methodologies and Coronavirus Disease (COVID-19), please see the following DBRS Morningstar press release: https://www.dbrsmorningstar.com/research/357883.

For more information regarding the structured finance rating approach and Coronavirus Disease (COVID-19), please see the following DBRS Morningstar press release: https://www.dbrsmorningstar.com/research/359905.

For more information regarding structured finance rating methodologies and Coronavirus Disease (COVID-19), please see the following DBRS Morningstar press release: https://www.dbrsmorningstar.com/research/358308.

ESG CONSIDERATIONS
A description of how DBRS Morningstar considers ESG factors within the DBRS Morningstar analytical framework can be found in the DBRS Morningstar Criteria: Approach to Environmental, Social, and Governance Risk Factors in Credit Ratings at: https://www.dbrsmorningstar.com/research/373262.

Notes:
All figures are in euros unless otherwise noted.

The principal methodology applicable to the ratings is the “Master European Structured Finance Surveillance Methodology” (8 February 2021).

Other methodologies referenced in this transaction are listed at the end of this press release. These may be found at: http://www.dbrsmorningstar.com/about/methodologies.

DBRS Morningstar has applied the principal methodology consistently and conducted a review of the transaction in accordance with the principal methodology.

A review of the transaction legal documents was not conducted as the legal documents have remained unchanged since the most recent rating action.

For a more detailed discussion of the sovereign risk impact on Structured Finance ratings, please refer to “Appendix C: The Impact of Sovereign Ratings on Other DBRS Morningstar Credit Ratings” of the “Global Methodology for Rating Sovereign Governments” at: https://www.dbrsmorningstar.com/research/381451/global-methodology-for-rating-sovereign-governments.

The sources of data and information used for these ratings include investor reports provided by Intertrust Administrative Services B.V. and loan-level data provided by the European DataWarehouse GmbH.

DBRS Morningstar did not rely upon third-party due diligence in order to conduct its analysis.

At the time of the initial ratings, DBRS Morningstar was supplied with third-party assessments. However, this did not impact the rating analysis.

DBRS Morningstar considers the data and information available to it for the purposes of providing these ratings to be of satisfactory quality.

DBRS Morningstar does not audit or independently verify the data or information it receives in connection with the rating process.

The last rating action on this transaction took place on 16 July 2020, when DBRS Morningstar confirmed its ratings of the Class A, Class B, Class C, and Class D Notes at AAA (sf), AA (high) (sf), A (sf), and BBB (high) (sf), respectively.

The lead analyst responsibilities for this transaction have been transferred to Daniel Rakhamimov.

Information regarding DBRS Morningstar ratings, including definitions, policies, and methodologies, is available at www.dbrsmorningstar.com.

To assess the impact of changing the transaction parameters on the rating, DBRS Morningstar considered the following stress scenarios as compared with the parameters used to determine the rating (the Base Case):

-- DBRS Morningstar expected a lifetime base case PD and LGD for the pool based on a review of the current assets. Adverse changes to asset performance may cause stresses to base case assumptions and therefore have a negative effect on credit ratings.
-- The base case PD and LGD of the current pool of loans for the Issuer are 2.7% and 10.6%, respectively.
-- The risk sensitivity overview below illustrates the ratings expected if the PD and LGD increase by a certain percentage over the base case assumption. For example, if the LGD increases by 50%, the rating of the Class A Notes would be expected to remain at AAA (sf), assuming no change in the PD. If the PD increases by 50%, the rating of the Class A Notes would be expected to remain at AAA (sf), assuming no change in the LGD. Furthermore, if both the PD and LGD increase by 50%, the rating of the Class A Notes would be expected to fall to AA (high) (sf).

Class A Notes Risk Sensitivity:
-- 25% increase in LGD, expected rating of AAA (sf)
-- 50% increase in LGD, expected rating of AAA (sf)
-- 25% increase in PD, expected rating of AAA (sf)
-- 50% increase in PD, expected rating of AAA (sf)
-- 25% increase in PD and 25% increase in LGD, expected rating of AAA (sf)
-- 25% increase in PD and 50% increase in LGD, expected rating of AA (high) (sf)
-- 50% increase in PD and 25% increase in LGD, expected rating of AA (high) (sf)
-- 50% increase in PD and 50% increase in LGD, expected rating of AA (high) (sf)

Class B Notes Risk Sensitivity:
-- 25% increase in LGD, expected rating of AA (high) (sf)
-- 50% increase in LGD, expected rating of AA (sf)
-- 25% increase in PD, expected rating of AA (low) (sf)
-- 50% increase in PD, expected rating of A (high) (sf)
-- 25% increase in PD and 25% increase in LGD, expected rating of A (high) (sf)
-- 25% increase in PD and 50% increase in LGD, expected rating of A (high) (sf)
-- 50% increase in PD and 25% increase in LGD, expected rating of A (high) (sf)
-- 50% increase in PD and 50% increase in LGD, expected rating of A (sf)

Class C Notes Risk Sensitivity:
-- 25% increase in LGD, expected rating of AA (low) (sf)
-- 50% increase in LGD, expected rating of A (high) (sf)
-- 25% increase in PD, expected rating of AA (low) (sf)
-- 50% increase in PD, expected rating of A (high) (sf)
-- 25% increase in PD and 25% increase in LGD, expected rating of A (high) (sf)
-- 25% increase in PD and 50% increase in LGD, expected rating of A (sf)
-- 50% increase in PD and 25% increase in LGD, expected rating of A (sf)
-- 50% increase in PD and 50% increase in LGD, expected rating of A (low) (sf)

Class D Notes Risk Sensitivity:
-- 25% increase in LGD, expected rating of A (sf)
-- 50% increase in LGD, expected rating of A (low) (sf)
-- 25% increase in PD, expected rating of A (sf)
-- 50% increase in PD, expected rating of BBB (high) (sf)
-- 25% increase in PD and 25% increase in LGD, expected rating of BBB (high) (sf)
-- 25% increase in PD and 50% increase in LGD, expected rating of BBB (high) (sf)
-- 50% increase in PD and 25% increase in LGD, expected rating of BBB (high) (sf)
-- 50% increase in PD and 50% increase in LGD, expected rating of BBB (high) (sf)

For further information on DBRS Morningstar historical default rates published by the European Securities and Markets Authority (ESMA) in a central repository, see: http://cerep.esma.europa.eu/cerep-web/statistics/defaults.xhtml. DBRS Morningstar understands further information on DBRS Morningstar historical default rates may be published by the Financial Conduct Authority (FCA) on its webpage: https://www.fca.org.uk/firms/credit-rating-agencies.

These ratings are endorsed by DBRS Ratings Limited for use in the United Kingdom.

Lead Analyst: Daniel Rakhamimov, Assistant Vice President
Rating Committee Chair: Alfonso Candelas, Senior Vice President
Initial Rating Date: 27 June 2019

DBRS Ratings GmbH
Neue Mainzer Straße 75
60311 Frankfurt am Main Deutschland
Tel. +49 (69) 8088 3500

Geschäftsführer: Detlef Scholz
Amtsgericht Frankfurt am Main, HRB 110259

The rating methodologies used in the analysis of this transaction can be found at: http://www.dbrsmorningstar.com/about/methodologies.

-- Legal Criteria for European Structured Finance Transactions (6 April 2021), https://www.dbrsmorningstar.com/research/376314/legal-criteria-for-european-structured-finance-transactions.
-- Master European Structured Finance Surveillance Methodology (8 February 2021), https://www.dbrsmorningstar.com/research/373435/master-european-structured-finance-surveillance-methodology.
-- DBRS Morningstar Criteria: Approach to Environmental, Social, and Governance Risk Factors in Credit Ratings (3 February 2021), https://www.dbrsmorningstar.com/research/373262/dbrs-morningstar-criteria-approach-to-environmental-social-and-governance-risk-factors-in-credit-ratings.
-- Operational Risk Assessment for European Structured Finance Servicers (19 November 2020), https://www.dbrsmorningstar.com/research/370270/operational-risk-assessment-for-european-structured-finance-servicers.
-- European RMBS Insight Methodology (3 June 2021) and European Asset RMBS Insight Model (5.2.0.0), https://www.dbrsmorningstar.com/research/379557/european-rmbs-insight-methodology.
-- European RMBS Insight: Dutch Addendum (4 May 2021), https://www.dbrsmorningstar.com/research/377934/european-rmbs-insight-dutch-addendum.
-- Interest Rate Stresses for European Structured Finance Transactions (28 September 2020), https://www.dbrsmorningstar.com/research/367292/interest-rate-stresses-for-european-structured-finance-transactions.
-- Derivative Criteria for European Structured Finance Transactions (24 September 2020), https://www.dbrsmorningstar.com/research/367092/derivative-criteria-for-european-structured-finance-transactions.

A description of how DBRS Morningstar analyses structured finance transactions and how the methodologies are collectively applied can be found at http://www.dbrsmorningstar.com/research/278375.

For more information on this credit or on this industry, visit www.dbrsmorningstar.com or contact us at info@dbrsmorningstar.com.