Source: https://www.scribd.com/document/154624337/A-journey-to-AltA-zone
Timestamp: 2019-02-17 00:04:08
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Matched Legal Cases: ['art 1', 'art 2', 'art 2', 'art 3', 'art 3', 'art 2', 'art 2', 'art 2', 'art 3', '§ 37', '§ 102', '§ 101', '§ 37', '§ 104', '§ 703', '§ 37', 'art 4']

A.journey.to.AltA.zone | Alt A | Mortgage Backed Security
A.journey.to.AltA.zone
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A Journey to the Alt-A Zone
A Brief Primer on Alt-A Mortgage Loans
It was 2:45pm on a regular Friday afternoon in the small seaside town of Oceanviewville. Sam Jones, a junior loan officer, was quietly sitting at his desk at First Oceanviewville Bank. He figured that he was just about done for the week and was looking forward to the weekend. Then, unexpectedly, a man entered the bank and walked up to his desk. The man said he was buying a vacation home in the town and wanted to take out a mortgage loan. The man gave Sam his social security number so that Sam could pull his credit report. Sam saw that that man had an impressive credit score of 725. The man explained that he planned to make a down payment of 5% on the $450,000 house and that he needed to act quickly. He explained that he was self-employed and a very private person. He strongly preferred not to discuss his assets or the source or nature of his income. Sam considered the situation. The man's situation did not fit the requirements of the regular loan programs with which Sam was familiar. On the other hand, because of his high credit score, the man clearly was not a sub-prime borrower. Sam didn't realize it, but he was about to take a journey…a journey to the alt-A zone.
MBS backed by alt-A mortgage loans can be an attractive alternative to MBS backed by regular conforming or jumbo mortgage loans. Compared to regular mortgage loans, alt-A mortgage loans display greater resistance to prepayments during the first nine to twelve months following their origination. In the past, alt-A mortgage loans enjoyed an even greater prepayment advantage. However, the increasing efficiency of the primary mortgage market and the encroachment by the GSEs into the sector have caused the advantage to erode somewhat. Nonetheless, it persists for nearly a year following origination and, especially in an environment of falling interest rates, can create value for investors. The alt-A prepayment advantage is tied to the characteristics that cause loans to be classified in the alt-A category. Those same characteristics make alt-A loans somewhat riskier from a credit perspective than regular loans. Thus, in broad terms, it is fair to describe the alt-A prepayment advantage as being tied to the degree of "credit impairment" in the loans. For the alt-A MBS investor, the incrementally higher credit risk of alt-A mortgage loans is counterbalanced by higher credit enhancement levels than those found in regular private-label MBS. However, the alt-A prepayment advantage carries through to the securities, giving investors an opportunity to moderate their exposure to prepayment risk.
Contacts:* Mark Adelson (212) 667-2337 madelson@us.nomura.com
The following individuals provided comments, guidance, and insights without which this report would not have been possible: Arthur Frank, David Jacob, Joe Kohout, Rob Leeds, Jeane Leschak, Tara Medley, Hyung Peak, and Cindy Ross. Any mistakes or inaccuracies in the paper are solely the author's responsibility.
Nomura Securities International, Inc. Two World Financial Center Building B New York, NY 10281-1198 Fax: (212) 667-1046
Please read the important disclosures and analyst certifications appearing on the last page.
(v) secured by a non-warrantable condominium unit or a 1 condominium hotel.6 0 0 1998 Source: Inside Mortgage Finance 1999 2000 2001 2002 II. Defining the Alt-A Sector The alt-A mortgage sector has always been difficult to define. The same lender's alt-A program allows such a loan to have an LTV as high as 95%. As discussed below. in recent years. events of the past few years have made the task even more vexing. that is. the approach defines alt-A loans by what they are not. Although it represents only a small fraction of the whole MBS landscape.pdf.5 18.000 "stated income" loan to a top-tier borrower. Another example: the same lender's regular program does not permit cash-out refinancing loans on properties that are second homes or vacation homes. the regular programs have expanded the scope of For example. The foregoing approach for defining alt-A loans is gradually becoming less useful. Perhaps the most important of such characteristics is "documentation.gmacrfc. The dominant approach for defining the alt-A mortgage loans makes reference to the characteristics (or combinations of characteristics) that would have disqualified a loan from traditional conforming or jumbo loan programs. The following chart shows the issuance volume of alt-A MBS over the past several years: Chart 1: Alt-A MBS Issuance by Year 60 Alt-A Issuance Volume (left) 50 Total MBS Issuance Volume (right) 40 $ Billions 1.pdf. See https://www.200 1.com/ClientGuide/At-A-Glances/At-A-Glance. or https://www. not eligible for regular conforming or jumbo loan programs. The boundaries of today's alt-A mortgage sector are faint and vague. a whole vocabulary has developed for describing loans with different levels of documentation.3 300 13.com/ClientGuide/Newsletter/Archive/March03/03-G02_CG.8 600 10 15. it produces enough volume to warrant consideration by most investors.Nomura Fixed Income Research The alt-A MBS sector has grown gradually over the years. However. (iv) a debtto-income ratio above normal limits.800 30 54. The lender's alt-A program allows such loans. In large measure.500 1. Other characteristics that might cause a loan to fall into the alt-A classification include the following: (i) a loan-to-value ratio (LTV) in excess of 80% but lacking primary mortgage insurance. (ii) a borrower who is a temporary resident alien. However. 1 (2) . or (vi) an LTV above permitted thresholds in combination with other factors." A substantial proportion of traditional alt-A loans were those where a borrower would not provide complete documentation of his assets or the amount or source of his income. one lender's standard program allows for a maximum LTV of 75% on a $400.6 900 20 35. (iii) secured by non-owner occupied property.gmacrfc.
the majority of loans in virtually all alt-A pools either possess recognizable alt-A features or come from the A-minus genre. this new species of alt-A loans includes whatever lenders – or issuers of alt-A MBS – choose to include in the category from time to time. and they have an incentive to do so because of the favorable pricing that alt-A loans command. if they include too many regular loans in their alt-A pools. a borrower who has made all of his rent or mortgage payments on time during the preceding year and who has a FICO score above 620 generally can qualify for an ordinary (i. The degree of protection from prepayment risk has declined over time. Inc. Washington Mutual. Formerly. Inc. Such loans often have interest rates slightly higher than ordinary prime-quality loans. anecdotal evidence suggests that lenders sometimes classify loans as alt-A and include them in alt-A loan pools simply because they can. Wells Fargo Alternative Loan Trust Norwest Integrated Structured Assets.e. a "sub-prime mortgage loan" is a first-lien mortgage loan to a sub-prime borrower. Chart 2 below illustrates the slower prepayment speeds that alt-A MBS have achieved relative to regular MBS. Such players can readily include a small proportion of regular loans in their alt-A pools. Such loans are especially likely to be classified in the alt-A category if they have less than full documentation. Inc. However.Nomura Fixed Income Research their offerings. the alt-A prepayment advantage can translate into substantial value. "prime" or "A quality") conforming or jumbo mortgage loan. conventional wisdom is that alt-A loans are less likely to be prepaid in a falling interest rate environment than regular mortgage loans for the first nine to twelve months following their origination. Today. Countrywide. The data underlying the chart was compiled from a sampling of more than 50 alt-A MBS transactions from the 2002 and 2003 vintages. There is no universally accepted definition of a subprime borrower. a typical sub-prime borrower either has been delinquent on his housing payments at least once during the preceding year or has a FICO score below 620. such loans were sometimes called "A-minus" loans. Most recently. In addition to loans that possess "traditional" alt-A characteristics. In broad terms. III. 2 Greenpoint Mortgage. Residential Asset Securitization Trusts Headlands Mortgage Securities. In essence. Thus. they will create visible performance distortions and lose their credibility as alt-A players. Impac Secured Assets Corporation Structured Asset Securities Corp Countrywide Alternative Loan Trust Bank of America Alternative Loan Trust Mastr Alternative Loan Trust Nomura Asset Acceptance Corporation (also issues non-alt-A securities) Bloomberg RALI WFALT NISTR RAST HMSI IMSA SASC CWALT BOAA MALT NAA (3) . However.. Examples include Wells Fargo. but they may be otherwise indistinguishable. For newly issued securities in a fast prepayment environment. 2 Bloomberg tickers for selected alt-A MBS issuers are as follows: Selected Alt-A MBS Issuers Company Residential Funding Corporation Wells Fargo Home Mortgage (f/k/a Norwest Mortgage) IndyMac Greenpoint Mortgage (f/k/a Headlands Mortgage) Impac Funding Corporation (f/k/a ICI Funding Corporation) Lehman Brothers Countrywide Bank of America UBS Warburg Nomura Issuer (SPC) Residential Accredit Loans. and Impac Funding Corporation. Appeal of Alt-A MBS Alt-A MBS are appealing because they are perceived to offer temporary protection from prepayment risk. today's alt-A loan pools often include a portion of loans from the strong end of the "sub-prime" range. with the result that many of the loans that would not have qualified several years ago would qualify today. Thus. GMAC-RFC (RALI). Various companies have branded themselves as alt-A players either by issuing alt-A MBS or by highlighting alt-A loan products in their product lineups.
As shown on the Chart 2. CPR%) 50 40 30 20 10 Alt-A 6¼-6¾ / FN 6 Alt-A 6¾-7¼ / FN 6½ Alt-A Pool WAC / FNMA Pass-Through Rate Alt-A 7¼-7¾ / FN 7 Alt-A 10th to 25th Percentile Alt-A 75th to 90th Percentile FNMA 2002 Vintage (6½) Source: Bloomberg Alt-A 25th to 50th Percentile Alt-A Weighted Average FNMA 2001 Vintage (7) Alt-A 50th to 75th Percentile FNMA 2002 Vintage (6) Chart 3. shows how the alt-A prepayment advantage burns off after the loans have seasoned for more than a year. (4) . As shown on the chart. the vintages from which an investor could expect delivery on a generic trade).e. the different segments (bands) correspond to different percentile ranges in the distribution. Within each bar. below.. We have compared each alt-A WAC range with what we believe to be the most reasonably comparable coupon and vintage (i. The circular black dots show the weighted-average prepayment speed for pools in the category. The grey-shaded dots show the weighted average prepayment speeds for FNMA MBS. Chart 3 is organized in the same fashion as Chart 2 and reflects the prepayment speeds on more than 80 alt-A deals from the 2000 and 2001 vintage years. prepayment speeds on the older alt-A pools are nearly the same as the speeds on the most reasonably comparable FNMA coupons and vintages.Nomura Fixed Income Research Each floating bar in Chart 2 shows the distribution of prepayment speeds for alt-A loan pools having weighted-average coupons in the corresponding range. alt-A pools generally display prepayment rates that are more than 10% CPR slower than the comparable FNMA MBS. Chart 2 Distribution of Prepayment Speeds on New Alt-A Pools (2002 and 2003 Vintages) and Comparison to Prepayment Speeds on FNMA 30 Year MBS (as of April 2003) 70 60 Prepayment Speed (3 Mo.
Compared to ordinary mortgage loans. Moody's Investors Service. vol. Loans with less than full documentation arguably are riskier from a credit standpoint than fully documented loans. A. It may be reasonable to expect a similar correlation in the future. 3. Mortgage Data Report. 5 May 2000. 12. December 1998. Accordingly. Documentation One of the strongest factors driving the credit impairment – and the prepayment advantage – of alt-A loans is their documentation level. 4 (5) .Nomura Fixed Income Research Chart 3 Distribution of Prepayment Speeds on Seasoned Alt-A Pools (2000 and 2001 Vintages) and Comparison to Prepayment Speeds on FNMA 30 Year MBS (as of April 2003) 70 Prepayment Speed (3 Mo. The characteristics associated with traditional alt-A loans are the ones that give them their prepayment advantage relative to ordinary conforming and jumbo loans. losses on PruHome deals from the late 1980s and early 1990s displayed a strong correlation to the proportion of reduced 3 documentation loans included in the underlying pools. CPR%) 65 60 55 50 45 40 Alt-A Pool WAC / FNMA Pass-Through Rate Alt-A 10th to 25th Percentile Alt-A 75th to 90th Percentile FNMA 2000 Vintage (7½) FNMA 2000 Vintage (9) Source: Bloomberg Alt-A 25th to 50th Percentile Alt-A Weighted Average FNMA 2000 Vintage (8) Alt-A 50th to 75th Percentile FNMA 2001 Vintage (7) FNMA 2000 Vintage (8½) Understanding the alt-A prepayment advantage requires delving into the characteristics of the loans themselves. Similarly. The 1991 recession revealed a notable correlation between losses and reduced documentation in mortgage loans. 7. p. to large proportions of reduced documentation 4 loans in the underlying pools. Residential Funding Corporation. those characteristics also increase the credit risk of the loans. For example. At the time of the last recession. alt-A mortgages were not separately labeled and segregated into pools of their own for securitizations. in part. high levels of losses on RFC deals from the same vintages have been ascribed. alt-A mortgage loans often are described as being slightly "credit impaired. the connection between reduced documentation 3 Diane Westerback." In broad terms. However. no. Residential Mortgage Business Practices’ Effect on Credit Quality: A PruHome Case Study. the prepayment advantage of an alt-A loan is proportional to its degree of credit impairment.
Alternative Documentation: The term "alternative documentation" is somewhat misleading. the lender does not verify the amount of income. The traditional device for documenting the income of an employed borrower is a written verification of employment (VOE). there are a nearly infinite variety of documentation options. Freddie Mac Single Family Seller/Servicer Guide. W-2s. and bank statements instead of traditional VOEs and VODs. Volume 1. Documentation of a borrower's assets generally consists of either (i) bank. mutual fund. pay-stubs. and mortgage or rental history. the entire mortgage landscape. a clever borrower can fabricate reasonably convincing pay-stubs. Part X. In between. and tax returns also are considered full documentation. Using a computer and a laser printer. there is a spectrum of documentation options available to borrowers. Various combinations of paystubs. W-2 statements (usually for two years). Loan Documentation – Common Permutations Reduced Documentation No Doc (NINA) Stated Income Stated Assets Stated Income/ Stated Assets No Income No Asset No Ratio Full or Alternative Documentation Documentation Type 9 9 9 9 Income Disclosed 9 9 9 9 Source of Income Verified 91 9 9 Amount of Income Verified 9 9 9 9 Qualifying Ratios Calculated Based on Income 9 9 9 9 9 Assets Disclosed 9 9 9 Assets Verified 1 "No Income" loans usually have a verbal verification of employment (VVOE) 2 "No Ratio" loans rarely (but sometimes) have a VVOE 9 9 9 9 92 9 9 5 Fannie Mae Single Family Selling Guide. the borrower discloses his income. and brokerage statements or (ii) a written "verification of deposit" (VOD) from the 6 borrower's bank. full documentation generally consists of tax returns and business 5 financial statements. and bank statements carry as much weight as VOEs and VODs and meet the requirements for full documentation loan programs. though the lender might verify the source. and bank statements. In a stated income loan. In today's primary mortgage market. § 37. It is worthwhile considering some of the more common ones: Full Documentation: Full documentation loans refer to loans where the borrower documents his income. Part X. § 102. Alternative documentation slightly increases the risk of fraud. W-2s. The following table summarizes some of the frequent permutations for reduced documentation loans. Freddie Mac Single Family Seller/Servicer Guide. In today's primary mortgage market. full documentation standards also require written verification of the 7 borrower's mortgage (VOM) or rental history (VOR). Since the early 1990s recession. § 101. Reduced Documentation: "Reduced documentation" refers to situations where either a borrower's income or his assets are not fully documented. assets. Volume 1.23(a). Fannie Mae Single Family Selling Guide.23(b). 7 6 Fannie Mae Single Family Selling Guide. W-2's. the lender would verify the borrower's assets and would use the stated (unverified) income amount to calculate qualifying ratios. Alternative documentation refers primarily to the use of pay-stubs. § 37. The spectrum ranges from "full documentation" at one end to "no doc" loans at the other. For example in a "stated income" loan. § 104.Nomura Fixed Income Research and losses was not specifically associated with alt-A pools. Part X. However. the incremental fraud risk associated with alternative documentation is quite small. In some cases. including documentation practices. However. has evolved substantially. For self-employed borrowers. (6) . A borrower inclined to commit fraud might just as easily opt for a "reduced documentation" loan.
The incremental risk of borrower-driven reduced documentation loans stems from the possibility that a borrower has something to hide. However. No doc loans are the riskiest of all. speed of processing. Some of today's loan underwriting processes automatically offer reduced documentation to the most credit-worthy borrowers. traditional lending guidelines use a borrower's debt-to-income ratio (DTI) as a measure of his capacity to repay a loan. privacy. Borrower-driven reduced documentation loan programs arguably raise public policy issues. the lender verbally verifies the source of a borrower's income. No doc loans can be viewed as a natural and logical extension of reduced documentation loan programs. If all borrowers were subjected to full income verification. credit cards. In such a case. Such loans are sometimes called "no income/no asset" loans or NINAs. Although the traditional guidelines have declined in importance.Nomura Fixed Income Research Some of today's reduced documentation loans are less risky than those of the late 1980s and early 1990s. The key difference is the selection process. In contrast to a no ratio loan program. Reduced documentation loans produced through a borrower-driven process arguably are riskier than other reduced documentation loans. GMAC-RFC Client Guide. In contrast. A second factor is the possibility that the borrower's tax evasion or other illegal activity comes to light. a borrower can borrow more than he might otherwise be able to. student loans and all other debt) should not be more than 36% of his gross monthly income. No Doc (NINA): A "no doc" loan is one in which the borrower discloses neither his income nor his assets. Although there are legitimate reasons why a borrower might seek a reduced documentation loan (e. No ratio loans are somewhat riskier than regular loans because the borrowers tend to be more financially stretched. 1-03-G02. such a borrower's true income can support a larger loan than could the level of income reported on his tax filings. Such programs are essentially identical to "no income" programs. Many of today's reduced documentation loans result from a lender-driven process rather than a borrower-driven one. 9 Fannie Mae Single Family Selling Guide. Part X. Traditional guidelines for conforming loans specified that a borrower's monthly mortgage payment should not be more than 28% of his gross monthly income and that all the borrower's total monthly debt service (including mortgage. auto loans. A fairly common situation is one in which a borrower has substantial cash income that he does not report on his tax returns.g. in a no ratio loan program. No Ratio: A "no ratio" loan is one in which the borrower's assets are fully disclosed and verified. 37. § 703. Such programs can be seen as encouraging or facilitating tax evasion by dishonest borrowers. 6A. 8 However. but we would not be surprised to see such legislation eventually surface.16. Chap. ver. they still have a role in 9 underwriting many residential mortgage loans.). certain borrowers would have an additional incentive not to cheat on their taxes. However. A borrower-driven process still accounts for some portion of today's reduced documentation loans. etc. Freddie Mac Single Family Seller/Servicer Guide. The borrower's general lack of integrity is one factor that likely increases risk. only borrowers who specifically sought reduced documentation loans received them in the borrower-driven process that dominated the late 1980s and early 1990s. § A602(F)(5). We believe that alt-A pools contain a somewhat higher proportion of borrower-driven reduced documentation loans than do regular loan pools. the neither the amount nor the source of the borrower's income is disclosed. Even though a high-quality borrower never requests reduced documentation standards. he may receive them in order to expedite the processing of his loan application. it is debatable whether those reasons would be sufficiently compelling to counterbalance the government's interest in properly administering the tax system. government action could impair the borrower's ability to make payments on his mortgage loan. and the credit approval process for such a loan does not rely on qualifying ratios. it is not appropriate to describe a no doc loan as simply a sub-category of the reduced documentation sector because documentation is entirely eliminated. Thus.. Volume 1. (7) . We are not aware of any proposed legislation to curtail borrower-driven reduced documentation lending. lost financial records. §§ 37.15. A 8 In a small minority of "no ratio" loan programs.
Wtd. Avg. Coupon Source: Standard & Poor's 1998 74.W. FICO Alt-A Loans .36 2001 76. LTV Alt-A Loans .5 1999 76. LTV Alt-A Loans.Wtd.9 71. FICO Prime Loans . On the other hand.Wtd. If the income from the property is not sufficient to cover the expenses of ownership (debt service.12 7.7 63. Avg.6 75. Avg. insurance.3 70.47 6.W.7 70.5 76. taxes.4 73.5 68.9 63. The borrower often will seek the greatest degree of leverage that he can get (i. Prime Vintage Year Alt-A Loans .A. However.3 700 727 8. Cashout .2 74. pools of alt-A mortgage loans tend to have somewhat higher weighted-average LTVs and somewhat lower weighted-average FICO scores than contemporaneous pools of regular mortgage loans.e.Wtd. like a yacht or a fancy sports car.e. The table below illustrates those relationships: Comparison of Key Loan Characteristics. Loans secured by vacation homes arguably are somewhat less risky than loans secured by investor properties.4 703 721 8. Avg.3 697 721 9.9 71. In such states.W.A. A moderate proportion of alt-A mortgage loans are used to finance second homes (i.Wtd. Foreclosure of a non-primary residence loan can hurt a borrower's credit rating and disrupt his life.. Accordingly. A borrower in severe financial distress naturally will sacrifice luxuries before necessities (such as his primary residence).8 74. a borrower is not likely to maintain an investment property as well as he would maintain his primary or secondary residence.Nomura Fixed Income Research lender making a no doc loan must rely entirely on the borrower's credit report and the value of the mortgaged property for underwriting the loan. the borrower is likely to strongly consider his option to default on the loan. pools of alt-A loans tend to have somewhat higher weighted-average mortgage interest rates than contemporaneous pools of regular mortgage (8) . B. depreciation. Refinance .0 81.W.92 7.3 75. Such loans are somewhat riskier than mortgage loans secured by borrowers' primary residences. LTV Alt-A Loans. Purchase . A borrower in financial distress is more likely to default on a mortgage secured by a vacation home or investment property than he is to default on a loan secured by his primary residence.2 68.1 67. He is also likely to develop a psychological attachment to the property and will endeavor to keep it even if his financial situation deteriorates. A borrower uses a vacation home himself. Coupon Prime Loans . LTV Prime Loans.A.26 7. Avg.). Additionally.6 705 733 7.5 73.6 78.A. LTV Prime Loans.5 69. as shown in the last two lines of the table.8 82. etc.38 2002 76.Wtd.1 67.75 69.5 71. Avg.29 2000 79.7 73. the borrower's decision regarding whether or not to default on a loan secured by an investment property often is based on purely economic considerations. Occupancy Type A second factor contributing to the credit impairment of many alt-A loans is the occupancy status of the mortgaged properties. A typical borrower is likely to view an investment property in purely economic terms. C.W.6 68.A. He has a natural incentive to maintain it so that he can enjoy it.7 65. a vacation home is a luxury item. His objective is to maximize the return on his investment. Other Alt-A Loan Features Most fundamentally.W. he will shop for a loan that permits the highest possible LTV) and he will spend as little as possible to maintain or improve the property. LTV Alt-A Loans. Alt-A vs.2 80.7 71. vacation homes) or investment properties. LTV Prime Loans.9 75. Cashout . Laws in some states limit a lender's ability to seek a deficiency judgment against the borrower.0 70.A..07 8. Purchase .47 Similarly. the disruption would probably be much less severe than if the foreclosure is on his primary home.6 714 718 7. Refinance . a borrower's decision regarding whether or not to default on a loan secured by an investment property is likely to be entirely cold blooded.0 72.3 77.1 74. LTV Prime Loans .
00 percentage points higher than the prevailing rate on regular loans. The result is that alt-A MBS can have at least a temporary prepayment advantage without additional credit risk to investors. Underwriting Matrix.0097 0.1334 1998 Prime 30-yr losses 0. IV.com/banking/matrix.4633 1.75 to 2. The same options are available to borrowers on alt-A loans.0952 2. The higher LTV loans naturally are riskier and harder to refinance than their lower-LTV counterparts. Over time.0000 0. As noted above. it is impractical to classify any particular loan solely based on its interest rate. (9) .2397 1999 Prime 30-yr losses 0.0273 1999 Sub-prime (fixed) losses 0.0064 0.0021 0. Some borrowers pay points to get lower interest rates on their loans.50 percentage points.0017 0.3605 2.0809 0.pdf.0024 0.0115 0. Taken together. all the foregoing factors represent.0208 0.3219 1.0140 0.0891 1999 Alt-A 30-yr losses 0. Alt-A Loans in the Larger Context We can observe one dimension of the difference between alt-A mortgage loans and other mortgage loans by comparing the percentage levels of cumulative losses incurred on vintages of each type. The problem is origination points. At any time. to greater or lesser degrees. A variety of other features also contribute to the credit impairment and prepayment advantage of alt-A loans.2521 2000 Prime 30-yr losses 0.50 to 1.loans2000. For example. the "alt-A premium" has declined.Nomura Fixed Income Research loans.0000 0.0003 0.0317 0.6144 Source: Standard & Poor's A lender may induce a borrower to accept an above-market rate of interest by paying points to the borrower at the closing of a loan. 11 10 Pacific Northwest Mortgage Corporation.2843 1. but with higher LTVs.1126 0.0333 2000 Sub-prime (fixed) losses 0.0100 0. Alt-A MBS counterbalance the increased credit risk of their underlying loans by having higher credit enhancement than regular MBS. Thus. barriers that inhibit the ability of alt-A borrowers to refinance their loans.0244 0. but ultimately futile. it might be possible to identify an alt-A loan by capturing information about points or about the "annual percentage rate" (APR) disclosed to the borrower. The following table details cumulative loss levels reported by S&P: Cumulative Losses Over Time (%) for Alt-A. Conventional wisdom used to hold that the interest rate on alt-A loans tended to be 0. such approaches are impractical because the data is absent from most loan pool data files (tapes).2841 3. It is tempting. one lender's regular loan program limits LTVs to 70% on conforming balance. Prime.0036 0. a borrower may accept an above-market interest rate in order to receive "negative points" at the closing 10 of his loan.0040 0. For now.0727 2000 Alt-A 30-yr losses 0.0238 1998 Sub-prime (fixed) losses 0.0772 0. cash out loans secured by non-owner occupied properties. to frame a definition of alt-A mortgage loans based on their interest rate relative to contemporaneous conforming loans. http://www.0014 0.0000 0. while it is fair to conclude that pools of alt-A loans generally have higher weighted-average mortgage interest rates than pools of conforming or jumbo loans. Conversely. some of the loans permitted in alt-A programs are essentially the same loans that a lender would make through its regular programs. The same lender's alt-A program permits LTVs of up to 95% on such 11 loans. However. the range of mortgage interest rates on newly originated conforming loans can span several hundred basis points. and Sub-Prime Mortgage Loans of Different Vintages 1998 1999 2000 2001 2002 Performance Year 1998 Alt-A 30-yr losses 0. Today it is fair to characterize the alt-A premium as being in the range of 0.
at each point in time cumulative losses for each alt-A vintage are slightly higher than the losses for contemporaneous vintage of regular (prime) loans.1 Source: Standard & Poor's Calendar Quarter Based on their relative characteristics. However.Nomura Fixed Income Research As shown in the table. The use of such insurance causes a deal to have lower subordination levels than would otherwise be the case. The attributes of each product area place it in a distinct zone representing a combination of credit risk and prepayment risk.37 3.17 3. Accordingly. Alt-A MBS structures generally are modeled after those of ordinary jumbo MBS. As shown in the following table.44 1. it is fair to conclude that alt-A mortgage loans occupy an area "in between" regular (prime quality) mortgage loans and sub-prime loans. but still much lower than the losses on the contemporaneous vintage of sub-prime loans. but not nearly as high as for securities backed by sub-prime mortgage loans. it is worthwhile comparing the average subordination levels for alt-A deals with those of jumbo deals. Subordination Levels for Alt-A and Jumbo MBS Alt-A Alt-A Jumbo MBS Average "AAA" Average "AAA" ÷ Subordination (%) Subordination (%) Jumbo 2001Q1 5.10 1.4 2001Q3 5.99 2. the whole story is not so simple. subordination levels for AAA-rated alt-A MBS tend to be nearly twice what they are for recent AAA-rated jumbo MBS: Avg.7 2001Q2 4.87 2.3 2003Q1 5.1 2002Q1 5. The essential appeal of alt-A loans is that they arguably represent a desirable locus in the area between the prime and sub-prime zones.63 2. The natural result is that credit enhancement levels are higher for alt-A MBS than for regular jumbo MBS.6 2001Q4 6.83 2.35 1.92 1.0 2002Q4 5.26 1.55 2.80 3.16 2. The following chart illustrates the idea: (10) . Even so.77 2.85 2. Alt-A deals that use such insurance have the effect of "pulling down" the visible average subordination levels on alt-A deals.84 3. However.9 2002Q3 5. and credit enhancement levels. subordination is the primary (and usually the only) form of credit enhancement in alt-A mortgage securitizations.7 2002Q2 5. a modest proportion of alt-A deals use lender-paid mortgage insurance policies as an additional form of credit enhancement.53 3. historical performance.
For example. producing a beneficial averaging and smoothing. For example. So far. The opportunity for investors to target specific alt-A attributes through segmented loan groups is reminiscent of specified pool trading in the agency MBS sector. some deals have included loan groups that segment loans by original balance and by interest rate. and FICO scores. prepayment risk can spread across multiple deals without hindrance. Segmentation potentially could subdivide alt-A loan pools by documentation type. If two or more loans are prepaid in a single month. Segmentation of Alt-A Pools A recent development on the alt-A MBS landscape is the segmentation of loan pools into groups that emphasize particular loan attributes. Investors with differing preferences can express those preferences by purchasing MBS backed by loan groups that feature different loan attributes. one recent alt-A deal was backed by slightly fewer than 1. However. the only apparent disadvantage of segmented alt-A loan groups is that groups may be composed of small numbers of loans. There. By investing in securities from multiple deals. investors can express preferences for low loan balance pools and for pools with concentrations of loans secured by properties in "slow refinancing" states. which cannot be fully diversified across deals (because credit enhancement protection does not flow from one deal to the next). geographic concentration.000 loans and was divided into more than half a dozen groups.Nomura Fixed Income Research Chart 4: The Alt-A Sweet Spot in Credit-Prepayment Risk Space Relative Prepayment Risk → Re gu l ar P rim e Alt-A Sub-pr ime Relative Credit Risk on Raw Loans → V. The groups ranged in size from more than 400 loans to fewer than 60 loans. the one-month CPR of such a pool can be extreme. Investors who purchase securities backed by small numbers of loans should expect to experience prepayment volatility. the overall prepayment speed that the investor experiences on his alt-A MBS holdings will be simply the weighted average of the speeds across all positions. an investor can effectively diversify his exposure to prepayment risk across deals. (11) . In contrast to credit risk. Three groups had fewer than 100 loans. Segmentation offers an investor the opportunity to purchase a security backed by loans that possess characteristics that the investor prefers.
it really is not that mysterious or exotic. a zone where credit risk and prepayment risk combine in a special way. The remaining/surviving portions of the alt-A sector would be the alt-A jumbo area and the near-sub-prime area. We saw that reduced documentation can take many forms. Although the alt-A sector is hard to define. We compared some characteristics of alt-A pools to those of other pools and found that alt-A pools were positioned right where they ought to be: in-between pools of regular loans and pools of sub-prime loans. however. VII. If the GSEs continue to expand their appetites for alt-A production. The incrementally higher credit risk of alt-A loans – that is. they could offer opportunities to investors. While such developments might curtail the overall volume of alt-A-branded production. (12) . As it turns out. the impact would likely be felt most sharply in the area of conforming-balance loans at the high-credit-quality end of the alt-A spectrum. It is. their credit impairment – is the key to their prepayment advantage. and we observed that today's lender-driven reduced-documentation process is likely to produce less-risky loans (from a credit perspective) than did the borrower-driven environment of the late 1980s and early 1990s. On top of that. the GSE "encroachments" into the alt-A sector have severely blurred the once-sharp line that divided "conforming" mortgage loans from all others. the relatively new practice of segmenting alt-A loan pools into groups that feature specific loan attributes offers investors the opportunity to fine-tune their strategy in using alt-A MBS to moderate prepayment risk in their portfolios.Nomura Fixed Income Research VI. Conclusion We have concluded our journey through the alt-A zone and returned safely. The basic alt-A advantage is a temporary suppression of refinancing activity by the borrowers. Alt-A production that borders on sub-prime arguably has the greatest degree of prepayment protection. we identified a few key factors that appear in many alt-A loans: (i) less than full documentation and (ii) non-owner occupied properties. The Future of Alt-A The future of the alt-A sector is unclear. Already. Higher credit enhancement levels in alt-A deals counterbalance the higher credit risk while allowing investors to seize the prepayment advantage. For example. The GSEs have made major inroads by means of their automated underwriting systems: DU (Desktop Underwriter) and LP (Loan Prospector).
updated Corporates (13) . (3 February 2003) AOL Update (20 August 2002) Initiation of Coverage: Tyco international – BUY (31 July 2002) Initiation of coverage: AOL Time Warner – BUY (July 2002 – Mid Year Review) Some Investment Characteristics of GNMA Project Loan Securities (1 May 2003) CMBS Credit Migrations (4 December 2002) Aging Deals: Changes in CMBS Deal Diversity and Loan Concentration Over Time and Other Age Related Issues (8 October 2002) The Hotel Sector – The Cycle Begins Again (January 2002) Oops… They Did It Again – Jumbo MBS Credit Enhancement Levels Keep Falling (2 April 2003) Monthly Update on FHA/VA Reperforming Mortgages: Historical Prepayment Speeds. Fixed Income Research Mid-Year Review: Tale of Two Cities (July 2002) Accounting vs. Reality: Can We Handle the Truth? (16 April 2002) Thirty Years Later Securitization Is Still Good for America (15 March 2002) 2002 Fixed Income and Structured Products Outlook (24 January 2002) How the Events of 9/11 Affect Thinking about Risk 28 February 2002) (3 January 2002. updated 5 March 2002) US Corporate Monthly . (31 March 2003) Hewlett-Packard (25 March 2003) The Boeing Company (14 March 2003) US Corporate Monthly .February (7 March 2003) US Corporate Monthly . 7 June 2002) GNMA Multifamily Quarterly (2 May 2002) Value in Interest-Only Tranches Backed by GNMA Multifamily Pools (12 April 2002) Off-Balance Sheet Update (11 March 2003) Report from Arizona: Coverage of Selected Sessions of the February 2003 Securitization Conferences (18 February 2003) Senate Report Attacks Structured Finance (6 January 2003) Fixed Income 2003 Outlook & 2002 Year-in-Review (19 December 2002) Securitization Glossary (26 November 2002) U. and 12b 1 Fees Performed Poorly in 2002 (19 May 2003) Healthcare ABS Primer (18 October 2002) Report from Paradise Island: Coverage of Selected Sessions of ABS East 2002 (7 October 2002) ABS Credit Migrations (9 Jan 2002. Inc. Default Losses.March (8 April 2003) McDonalds Corp.January (14 February 2003) Alcoa.Nomura Fixed Income Research Recent Nomura Fixed Income Research Fixed Income General Topics • • • • • • • • • • MBS • • • • • CMBS • • • • ABS • • • • • • • • • • • • • • • What a Coincidence? – One Reason Why CDOs and ABS Backed by Aircraft. Franchise Loans.S.April (9 May 2003) US Corporate Monthly . and Total Returns (4 March 2003) Terrorism Insurance Update (published in Nomura CMBS Weekly Report.
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