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Federal National Mortgage Association : DBRS Morningstar Assigns Provisional Ratings to Wells Fargo Mortgage Backed Securities 2021-2 Trust

09/10/2021 | 03:51am

DBRS, Inc. (DBRS Morningstar) assigned the following provisional ratings to the Mortgage Pass-Through Certificates, Series 2021-2 (the Certificates) to be issued by Wells Fargo Mortgage Backed Securities 2021-2 Trust (WFMBS 2021-2 or the Trust).


$547.8 million Class A-1 at AAA (sf)


$547.8 million Class A-2 at AAA (sf)


$410.8 million Class A-3 at AAA (sf)


$410.8 million Class A-4 at AAA (sf)


$136.9 million Class A-5 at AAA (sf)


$136.9 million Class A-6 at AAA (sf)


$328.7 million Class A-7 at AAA (sf)


$328.7 million Class A-8 at AAA (sf)


$219.1 million Class A-9 at AAA (sf)


$219.1 million Class A-10 at AAA (sf)


$82.2 million Class A-11 at AAA (sf)


$82.2 million Class A-12 at AAA (sf)


$89.0 million Class A-13 at AAA (sf)


$89.0 million Class A-14 at AAA (sf)


$47.9 million Class A-15 at AAA (sf)


$47.9 million Class A-16 at AAA (sf)


$64.5 million Class A-17 at AAA (sf)


$64.5 million Class A-18 at AAA (sf)


$612.3 million Class A-19 at AAA (sf)


$612.3 million Class A-20 at AAA (sf)


$612.3 million Class A-IO1 at AAA (sf)


$547.8 million Class A-IO2 at AAA (sf)


$410.8 million Class A-IO3 at AAA (sf)


$136.9 million Class A-IO4 at AAA (sf)


$328.7 million Class A-IO5 at AAA (sf)


$219.1 million Class A-IO6 at AAA (sf)


$82.2 million Class A-IO7 at AAA (sf)


$89.0 million Class A-IO8 at AAA (sf)


$47.9 million Class A-IO9 at AAA (sf)


$64.5 million Class A-IO10 at AAA (sf)


$612.3 million Class A-IO11 at AAA (sf)


$13.9 million Class B-1 at AA (sf)


$7.7 million Class B-2 at A (sf)


$4.2 million Class B-3 at BBB (sf)


$2.6 million Class B-4 at BB (low) (sf)


$967.0 thousand Class B-5 at B (sf)


Classes A-IO1, A-IO2, A-IO3, A-IO4, A-IO5, A-IO6, A-IO7, A-IO8, A-IO9, A-IO10, and A-IO11 are interest-only certificates. The class balances represent notional amounts.


Classes A-1, A-2, A-3, A-4, A-5, A-6, A-7, A-9, A-10, A-11, A-13, A-15, A-17, A-19, A-20, A-IO2, A-IO3, A-IO4, A-IO6, and A-IO11 are exchangeable certificates. These classes can be exchanged for combinations of initial exchangeable certificates as specified in the offering documents.


Classes A-1, A-2, A-3, A-4, A-5, A-6, A-7, A-8, A-9, A-10, A-11, A-12, A-13, A-14, A-15, and A-16 are super-senior certificates. These classes benefit from additional protection from senior support certificates (Classes A-17 and A-18) with respect to loss allocation.


The AAA (sf) ratings on the Certificates reflect 5.00% of credit enhancement provided by subordinated certificates. The AA (sf), A (sf), BBB (sf), BB (low) (sf), and B (sf) ratings reflect 2.85%, 1.65%, 1.00%, 0.60%, and 0.45% of credit enhancement, respectively.


Other than the specified classes above, DBRS Morningstar does not rate any other classes in this transaction.


The Trust is a securitization of a portfolio of first-lien fixed-rate prime residential mortgages funded by the issuance of the Certificates. The Certificates are backed by 955 loans with a total principal balance of $644,485,820 as of the Cut-Off Date (September 1, 2021).


The pool consists of fully amortizing fixed-rate mortgages with original terms to maturity of 30 years and a weighted-average loan age of five months. In contrast to prior DBRS Morningstar-rated WFMBS prime transactions, WFMBS 2021-2 mostly comprises conforming mortgages (99.2% of the pool), which were underwritten using an automated underwriting system designated by Fannie Mae or Freddie Mac and were eligible for purchase by such agencies. Details on the underwriting of conforming loans can be found in the Key Probability of Default Drivers section of the presale.


Another difference from prior DBRS Morningstar-rated WFMBS prime transactions is the sample size is lower than 100% for third-party due-diligence reviews. Details on the scope of third-party due-diligence reviews can be found in the Third-Party Due Diligence section of the presale.


In addition, the pool contains a moderate concentration of loans that were granted appraisal waivers by the agencies (6.5%) or used desktop appraisals (17.2%). In its analysis, DBRS Morningstar applied property value haircuts to such loans, which increased the expected losses on the collateral.


All of the mortgage loans were either (1) originated by Wells Fargo Bank, N.A. (Wells Fargo) or (2) acquired by Wells Fargo from a qualified correspondent. Wells Fargo is also the Servicer, Mortgage Loan Seller, and Sponsor of the transaction. In addition, Wells Fargo will act as the Master Servicer, Securities Administrator, and Custodian. DBRS Morningstar has Wells Fargo's Long-Term Issuer Rating and Long-Term Senior Debt rating at AA with Negative trends and rates its Short-Term Instruments at R-1 (high) with a Negative trend.


Wilmington Savings Fund Society, FSB will serve as the Trustee. Opus Capital Markets Consultants, LLC will act as the representation and warranty (R&W) Independent Reviewer.


For this transaction, unlike prior DBRS Morningstar-rated WFMBS prime securitizations, the servicing fee payable to the Servicer comprises three separate components: the base servicing fee, the delinquent servicing fee, and the additional servicing fee. These fees vary based on the delinquency status of the related loan and will be paid from interest collections before distribution to the securities. The base servicing fee will reduce the Net weighted-average coupon (WAC) payable to certificateholders as part of the aggregate expense calculation. However, except for the Class B-6 Net WAC, the delinquent and additional servicing fees will not be included in the reduction of Net WAC and will thus reduce available funds entitled to the certificateholders. To capture the impact of such potential fees, DBRS Morningstar ran additional cash flow stresses based on its 60+-day delinquency and default curves, as detailed in the Cash Flow Analysis section of the presale.


The transaction employs a senior-subordinate, shifting-interest cash flow structure that is enhanced from a pre-crisis structure.


For this transaction, 44 loans (4.3% of the pool by balance) are in counties designated by the Federal Emergency Management Agency (FEMA) as having been affected by a natural disaster, not related to the Coronavirus Disease (COVID-19), as of September 6, 2021. The Sponsor has elected to obtain third-party property disaster inspection (PDI) reports for such FEMA zone loans, and for any FEMA zone loan where the PDI indicates material damage, the Mortgage Loan Seller will declare a discretionary breach of the damage R&W and will repurchase the affected loan at the applicable Repurchase Price.


Coronavirus Pandemic Impact


The coronavirus pandemic and the resulting isolation measures have caused an immediate economic contraction, leading to sharp increases in unemployment rates and income reductions for many consumers. DBRS Morningstar saw increases in delinquencies for many residential mortgage-backed securities (RMBS) asset classes, shortly after the onset of coronavirus.


Such mortgage delinquencies were mostly in the form of forbearance, which are generally short-term payment reliefs that may perform very differently from traditional delinquencies. At the onset of coronavirus, because the option to forebear mortgage payments was so widely available, it drove forbearance to a very high level. When the dust settled, coronavirus-induced forbearance in 2020 performed better than expected, thanks to government aid, low loan-to-value ratios, and good underwriting in the mortgage market in general. Across nearly all RMBS asset classes, delinquencies have been gradually trending down in recent months as forbearance periods come to an end for many borrowers.


As of the Cut-Off Date, there are no loans that are subject to an active coronavirus-related forbearance plan with the Servicer. Any loan that enters into a coronavirus-related forbearance plan after the Cut-Off Date and prior to or on the Closing Date will be repurchased within 30 days of the Closing Date. Loans that enter into a coronavirus-related forbearance plan after the Closing Date will remain in the pool.


For more information regarding rating methodologies and the coronavirus, please see the following DBRS Morningstar press releases: 'DBRS Morningstar Provides Update on Rating Methodologies in Light of Measures to Contain Coronavirus Disease (COVID-19),' dated March 12, 2020, and 'DBRS Morningstar Global Structured Finance Rating Methodologies and Coronavirus Disease (COVID-19),' dated March 20, 2020; and 'Baseline Macroeconomic Scenarios For Rated Sovereigns', dated September 8, 2021.


The ratings reflect transactional strengths that include high-quality credit attributes, well-qualified borrowers, financial strength of the counterparties, satisfactory third-party due-diligence review, structural enhancements, and 100% current loans.


The ratings reflect transactional challenges that include weaknesses in the R&W framework and a large percentage of loans that employed desktop appraisals in the property valuations or had appraisal waivers granted by the Fannie Mae or Freddie Mac.


The full description of the strengths, challenges, and mitigating factors is detailed in the related presale report.


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 U.S. dollars unless otherwise noted.


The principal methodology is RMBS Insight 1.3: U.S. Residential Mortgage-Backed Securities Model and Rating Methodology (April 1, 2020), which can be found on dbrsmorningstar.com under Methodologies & Criteria.


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


The rated entity or its related entities did participate in the rating process for this rating action. DBRS Morningstar had access to the accounts and other relevant internal documents of the rated entity or its related entities in connection with this rating action.


Please see the related appendix for additional information regarding the sensitivity of assumptions used in the rating process.


The full report providing additional analytical detail is available by clicking on the link under Related Documents below or by contacting us at info@dbrsmorningstar.com.


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


DBRS, Inc.


140 Broadway, 43rd Floor


New York, NY 10005 USA


Tel. +1 212 806-3277


Ratings


Date Issued Debt Rated Action Rating Trend Attributesi


US = Lead Analyst based in USA


CA = Lead Analyst based in Canada


EU = Lead Analyst based in EU


UK = Lead Analyst based in UK


E = EU endorsed


U = UK endorsed


Unsolicited Participating With Access


Unsolicited Participating Without Access


Unsolicited Non-participating


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-1 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-10 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-11 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-12 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-13 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-14 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-15 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-16 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-17 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-18 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-19 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-2 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-20 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-3 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-4 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-5 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-6 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-7 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-8 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-9 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO1 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO10 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO11 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO2 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO3 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO4 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO5 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO6 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO7 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO8 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class A-IO9 Provis.-New AAA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class B-1 Provis.-New AA (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class B-2 Provis.-New A (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class B-3 Provis.-New BBB (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class B-4 Provis.-New BB (low) (sf) -- US


09-Sep-21 Mortgage Pass-Through Certificates, Series 2021-2, Class B-5 Provis.-New B (sf) -- US


More


ALL DBRS RATINGS ARE SUBJECT TO DISCLAIMERS AND CERTAIN LIMITATIONS. PLEASE READ THESE DISCLAIMERS AND LIMITATIONS AND ADDITIONAL INFORMATION REGARDING DBRS RATINGS, INCLUDING DEFINITIONS, POLICIES, RATING SCALES AND METHODOLOGIES.


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