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U.S. Mortgage Backed Securities Market January 29, 2006 Thomas Zimmerman Executive Director U.S. Securitized Products Strategy Group

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Page 1: Mortgage Backed Securities Market

U.S. Mortgage Backed Securities Market

January 29, 2006

Thomas ZimmermanExecutive DirectorU.S. Securitized Products Strategy Group

Page 2: Mortgage Backed Securities Market

21-29-06 NY (tom).ppt

U.S. Mortgage Backed Securities Market

Size and importance

History

Securitization concepts

Cash flow basics— Prepayments— Average Life Variations— Option Adjustment Spread

CMOs

Non-Agency market

New affordability products

Impact of housing price appreciation

Page 3: Mortgage Backed Securities Market

31-29-06 NY (tom).ppt

U.S. Debt Securities Outstanding

U.S. Asset-Treasury Mortgages Corporate Agencies Backed

1985 1,437.7 372.1 776.5 293.9 0.91986 1,619.0 534.4 959.6 307.4 7.21987 1,724.7 672.1 1,074.9 341.4 12.91988 1,821.3 772.4 1,195.7 381.5 29.31989 1,945.4 971.5 1,292.5 411.8 51.31990 2,195.8 1,333.4 1,350.4 434.7 89.91991 2,471.6 1,636.9 1,454.7 442.8 129.91992 2,754.1 1,937.0 1,557.0 484.0 163.71993 2,989.5 2,144.7 1,674.7 570.7 199.91994 3,126.0 2,251.6 1,755.6 738.9 257.31995 3,307.2 2,352.1 1,937.5 844.6 316.31996 3,444.7 2,486.1 2,122.2 925.8 404.41997 3,441.8 2,680.2 2,359.0 1,022.6 535.81998 3,340.5 2,955.2 2,708.6 1,300.6 731.51999 3,266.0 3,334.2 3,046.5 1,620.0 900.82000 2,951.9 3,564.7 3,358.6 1,854.6 1,071.82001 2,967.5 4,125.5 3,835.4 2,149.6 1,281.12002 3,204.9 4,704.9 4,094.1 2,292.8 1,543.32003 3,574.9 5,309.1 4,462.0 2,636.7 1,693.72004 3,943.6 5,472.5 4,704.5 2,745.1 1,827.8

2005 Q3 4,066.1 5,752.1 4,982.2 2,555.7 1,922.6Source: Bond Market Association

($ Billions)

Page 4: Mortgage Backed Securities Market

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Trends in Approved Asset Classes—1998–2005

Asset class 2005 2004 2003 2002 2001 2000 1999 19981 U.S. Agencies 82 76 78 75 71 62 68 542 Supranationals 74 63 62 60 62 54 63 603 Sovereign Eurobonds 60 60 58 58 61 60 66 664 Sovereign Globals 54 50 56 54 52 44 50 345 Pfandbriefes 48 44 38 35 37 34 28 126 Bank Debt 41 21 24 21 26 20 16 47 MBS / ABS 39 39 27 22 17 19 12 28 Corporates 38 38 32 28 22 20 15 109 Landesbank Debt 37 33 27 30 30 32 28 1210 Yankee Bonds 19 12 14 16 22 28 12 1811 TIPs 16 9 na na na na na na12 Local Government 14 12 14 16 16 18 18 813 Canadian Provinces 9 10 10 8 9 10 10 1214 Equities 5 3 2 na na na na naSource: UBS Central Bank Surveys, 1998-2005

(% of Central Banks which have approved the asset class)

Page 5: Mortgage Backed Securities Market

51-29-06 NY (tom).ppt

Risk/Reward — Fixed Income Asset Classes

Average AverageAverage Excess Standard Sharpe Average Excess Standard SharpeReturn Return Deviation Ratio Return Return Deviation Ratio

Broad Investment-Grade (BIG) Bond Index 0.636 0.240 1.140 0.211 0.552 0.208 1.110 0.188Mortgage Index 0.629 0.234 0.922 0.254 0.528 0.184 0.833 0.221Asset Backed - - - - 0.519 0.176 0.868 0.203Treasury 0.618 0.223 1.329 0.168 0.541 0.198 1.328 0.149Government Sponsored 0.630 0.234 1.210 0.194 0.550 0.207 1.215 0.170BIG Credit 0.682 0.286 1.356 0.211 0.603 0.260 1.384 0.188Treasury 1-3 yr 0.491 0.095 0.517 0.184 0.409 0.066 0.482 0.137Treasury 3-7 yr 0.601 0.206 1.177 0.175 0.512 0.168 1.162 0.145Treasury 7-10 yr 0.672 0.276 1.760 0.157 0.590 0.246 1.773 0.139Treasury 10+ yr 0.787 0.392 2.439 0.161 0.731 0.388 2.468 0.157Government Sponsored 1-3 yr 0.509 0.114 0.517 0.221 0.429 0.086 0.490 0.176Government Sponsored 3-7 yr 0.617 0.222 1.066 0.208 0.527 0.184 1.044 0.176Government Sponsored 7-10 yr 0.690 0.295 1.580 0.187 0.606 0.262 1.601 0.164Government Sponsored 10+ yr 0.843 0.448 2.625 0.170 0.778 0.434 2.633 0.165BIG Credit 1-3 0.557 0.162 0.524 0.308 0.482 0.139 0.507 0.274BIG Credit 3-7 0.645 0.250 1.083 0.231 0.568 0.225 1.105 0.203BIG Credit 7-10 0.711 0.315 1.589 0.198 0.631 0.288 1.632 0.176BIG Credit 10+ 0.778 0.382 2.041 0.187 0.707 0.364 2.146 0.170

Citigroup Yield Book Indices

Curve = Flat to Flat Curve = Steep to Flat

Nominal Return01/89-12/05 07/92-12/05

Page 6: Mortgage Backed Securities Market

61-29-06 NY (tom).ppt

History of U.S. Mortgage Market

1930s—Great Depression led to 30-year fixed rate mortgage

1932—Federal Home Loan Bank system for thrift and FSLIC to insure depositors. Major source of residential mortgages until 1970s. Role greatly reduced with thrift crisis of 1980s.

1934—FHA—established to insure high LTV loans

1938—FNMA—established to purchase & hold FHA loans

1968—FNMA became private corporation—split into FNMA & GNMA

1970—First GNMA pass-through security

1970—FHLMC chartered as second GSE

1971—FHLMC issued first pass-through

1983—FHLMC issued first sequential pay CMO

Page 7: Mortgage Backed Securities Market

71-29-06 NY (tom).ppt

Mortgage Types

Fixed-rate— 15-year— 30-year

Adjustable-rate— Treasury— LIBOR

Hybrid (fixed period, then adjustable period)— 3/1s— 5/1s

Balloon (30-year amortization, then balloon payment)— 5-year— 7-year

Page 8: Mortgage Backed Securities Market

81-29-06 NY (tom).ppt

Securitization Process or (Conversion of Mortgage Collateral into Mortgage-Backed Securities)

Securities issued by a bankruptcy remote trust not an originator

Securities payment comes from cash-flow of underlying collateral, not payment from originator of loans.

If originator of loans goes into bankruptcy, does not impact cash-flow to security holders

Credit enhancement:— 3rd party guarantee—

– GNMA, FHLMC, FNMA for agencies– AAA monoline for non-agency

— Internal to deal—– Excess spread– Overcollateralization (OC) – Subordinated classes

Page 9: Mortgage Backed Securities Market

91-29-06 NY (tom).ppt

Prepayments—The Key to Agency MBS Valuation

Homeowner has right to call his loan at any time.

MBS = Treasury + Short a “Call”

Very few prepayment penalties in Agency MBS

When rates decline, homeowners prepay faster

Page 10: Mortgage Backed Securities Market

101-29-06 NY (tom).ppt

Prepayment Terminology

SMM = Single Monthly Mortality Rate

= Actual Principal Payment – Scheduled Principal Payment

Beginning Principal

CPR = SMM Annualized

PSA = Public Securities Association Standard Prepayment Ramp

Page 11: Mortgage Backed Securities Market

111-29-06 NY (tom).ppt

Components of Prepayment Speeds (Agencies)

CPRHousing Turnover (moving) 6-10%Cash-out Refinancing 2-8%Rate Refinancing 0-80%

Page 12: Mortgage Backed Securities Market

121-29-06 NY (tom).ppt

Refi Curve

10

20

30

40

50

60

70

-100 -50 0 50 100 150 200 250 300 350

Refi Incentive

CP

R

Page 13: Mortgage Backed Securities Market

131-29-06 NY (tom).ppt

Technology Has Moved Refi Curve

0

20

40

60

80

100

120

140

160

180

200

220

240

260

Jan-86

Jan-87

Jan-88

Jan-89

Jan-90

Jan-91

Jan-92

Jan-93

Jan-94

Jan-95

Jan-96

Jan-97

Jan-98

Jan-99

Jan-00

Jan-01

Jan-02

Jan-03

Report Date

Inc

en

tiv

e T

hre

sh

old

(b

ps

)

Refi Threshold (2001-03 Wave)

Refi Threshold

Linear (Refi Threshold)

Page 14: Mortgage Backed Securities Market

141-29-06 NY (tom).ppt

PSA Curves

0

1

2

3

4

5

6

7

8

9

10

0 5 10 15 20 25 30 35 40 45 50Age (in Months)

CP

R

100% PSA

150% PSA

Page 15: Mortgage Backed Securities Market

151-29-06 NY (tom).ppt

Mortgage Cashflows for a $100,000 30-yr 5.5% Loan

0

100

200

300

400

500

600

0 30 60 90 120 150 180 210 240 270 300 330 360

Age in Months

$ A

mo

un

t

Interest Payment

Principal Payment

Page 16: Mortgage Backed Securities Market

161-29-06 NY (tom).ppt

Mortgage Cashflows for a $100MM GNMA Pool With 0% Prepayments

0

10,000

20,000

30,000

40,000

50,000

60,000

0 30 60 90 120 150 180 210 240 270 300 330 360

Age in Months

$ A

mo

un

t

Interest Payment

Principal Payment

Page 17: Mortgage Backed Securities Market

171-29-06 NY (tom).ppt

Pass-Thru Cashflows ($100MM 30-yr GNMA 5.5% @ 6% CPR)

0

20,000

40,000

60,000

80,000

100,000

120,000

0 30 60 90 120 150 180 210 240 270 300 330 360

Age (in Months)

Ca

sh F

low

($

)

Servicing

Interest Payment

Principal Payment

Page 18: Mortgage Backed Securities Market

181-29-06 NY (tom).ppt

Pass-Thru Cashflows ($100MM 30yr GNMA 5.5% @ 100 PSA)

0

20,000

40,000

60,000

80,000

100,000

120,000

0 30 60 90 120 150 180 210 240 270 300 330 360

Age (in Months)

Ca

sh

Flo

w (

$)

Servicing

Interest Payment

Principal Payment

Page 19: Mortgage Backed Securities Market

191-29-06 NY (tom).ppt

WAL Profile

2

4

6

8

10

12

11 10 9 8 7 6 5 4 3

Mortgage Yields

WAL

Page 20: Mortgage Backed Securities Market

201-29-06 NY (tom).ppt

Negative Convexity

80

90

100

110

120

130

140

11 10 9 8 7 6 5 4

Mortgage Yields

7.5% Mtg

7.5% 10yr Tsy

7.5% 5yr Tsy

7.5% 2yr Tsy

Price

Page 21: Mortgage Backed Securities Market

211-29-06 NY (tom).ppt

Calculation of Prepayment Option Cost

OAS approach

1. Simulate 500 interest rate paths.

2. Calculate prepayments on each path.

3. Calculate yield spread of MBS to LIBOR (Treasury) curve so average price across all paths just equals price of MBS.

4. This is the expected yield pick-up to LIBOR (Treasury) curve, after adjusting for prepayment risk.

Page 22: Mortgage Backed Securities Market

221-29-06 NY (tom).ppt

Making Sequential CMOsPrincipal payments from $100mm 7.5% Deal

0

100,000

200,000

300,000

400,000

500,000

600,000

700,000

800,000

0 60 120 180 240 300 360Months

AB

D

C

Principal

Page 23: Mortgage Backed Securities Market

231-29-06 NY (tom).ppt

Making PAC CMOsPrincipal payments from $70 million 7.5% Deal

0

200,000

400,000

600,000

800,000

1,000,000

1,200,000

0 60 120 180 240 300 360

Month

100 PSA

250 PSA

A B CD

Principal

Page 24: Mortgage Backed Securities Market

241-29-06 NY (tom).ppt

Range of CMO WAL Profiles

CPR 6.5x6.5 Examples

Bond 5 10 15 20 25 30 35 Bond WAL Spread

1 Short VADM 3.4 3.4 3.4 3.4 3.3 3.0 2.7 FHR 2289 VA 3.0 115/C

2 Intermediate VADM 6.3 6.3 6.3 6.0 5.6 4.8 4.0 FHR 2288 VC 4.0 133/C

3 Longer VADM 11.5 11.5 8.7 7.1 5.8 4.9 4.1 FHR 2288 VB 11.9 150/C

4 3yr PAC 3.6 3.1 3.1 2.6 2.1 1.7 1.4 FHR 2219 PG 3.0 120/C

5 5yr PAC 6.7 5.9 5.5 4.1 3.2 2.6 2.2 FHR 2219 PH 5.1 138/C

6 10yr PAC 12.1 10.9 10.0 7.6 6.0 4.9 4.1 FHR 2219 PL 10.1 154/C

7 Last Cashflow PAC 18.5 18.4 17.9 14.1 11.3 9.3 7.8 FHR 2219 PM 19.1 158/C

8 2yr Payer/TAC/Type 2 2.5 1.6 1.2 0.9 0.7 0.6 0.6 FNR 00-5 A 3.0 159/C

9 5yr Payer/TAC/Type 2 6.0 3.9 2.8 2.2 1.8 1.5 1.3 FHR 2292 AB 4.8 166/C

10 10yr Payer/TAC/Type 2 13.1 8.1 5.5 4.1 3.3 2.6 2.2 FNR 00-5 B 8.3 172/C

11 Last Cashflow Payer 24.2 18.9 15.1 12.3 10.1 8.5 7.2 FNR 00-5 C 15.3 186/C

12 Seasoned Collateral 9.9 7.0 5.3 4.1 3.3 2.7 2.3 266 WAM 6.5 6.1 174/C

13 New Collateral 11.7 7.8 5.6 4.2 3.4 2.8 2.3 FN 6.5% TBA 7.1 181/C

14 Less Callable Support/Super PO 15.7 5.7 1.2 0.8 0.6 0.5 0.4 FHR 2102 KJ 4.6 226/C

15 More Callable Support/Rocket Z 25.0 0.5 0.2 0.1 0.1 0.1 0.1 FHR 2292 ZK 0.8 305/C

Page 25: Mortgage Backed Securities Market

251-29-06 NY (tom).ppt

U.S. Mortgage Market

Total Non- Total Residential Total MBS asYear GNMA FHLMC FNMA Agency Agency MBS Mortgages % of Resi Mtg1980 93,874 16,962 110,836 110,836 962,259 11.5 1981 105,790 19,897 717 126,404 126,404 1,034,857 12.2 1982 118,940 42,952 14,450 176,342 176,342 1,074,995 16.4 1983 159,981 57,720 25,121 242,822 242,822 1,191,648 20.4 1984 179,981 70,025 36,215 286,221 11,000 286,221 1,326,092 21.6 1985 212,145 99,908 54,987 367,040 24,016 367,040 1,523,590 24.1 1986 262,698 169,186 95,778 527,662 16,617 527,662 1,726,460 30.6 1987 315,832 205,992 137,330 659,154 27,800 686,954 1,924,218 35.7 1988 340,527 219,701 172,259 732,487 34,865 767,352 2,157,749 35.6 1989 369,687 266,060 219,577 855,324 43,325 898,649 2,382,954 37.7 1990 401,278 308,369 291,194 1,000,841 55,193 1,054,176 2,619,009 40.3 1991 425,241 351,906 362,667 1,139,814 98,183 1,223,814 2,787,186 43.9 1992 419,516 401,525 435,979 1,257,020 146,146 1,389,020 2,955,012 47.0 1993 414,066 434,499 486,804 1,335,369 174,571 1,519,069 3,116,500 48.7 1994 450,934 460,656 530,343 1,441,933 192,637 1,647,933 3,296,249 50.0 1995 472,283 512,238 569,724 1,554,245 206,487 1,778,545 3,467,257 51.3 1996 506,340 551,513 633,210 1,691,063 232,206 1,947,263 3,695,159 52.7 1997 536,810 576,846 687,981 1,801,637 276,930 2,112,337 3,935,995 53.7 1998 537,431 640,471 804,205 1,982,107 355,470 2,390,251 4,294,768 55.7 1999 582,263 740,157 924,941 2,247,361 394,559 2,706,828 4,716,558 57.4 2000 611,553 810,894 1,016,398 2,438,845 426,265 2,865,110 5,126,312 55.9 2001 591,368 940,933 1,238,125 2,770,426 496,101 3,266,527 5,635,791 58.0 2002 537,888 1,072,990 1,478,610 3,089,488 551,806 3,641,294 6,309,623 57.7 2003 473,738 1,156,188 1,851,728 3,481,654 683,231 4,164,885 7,105,053 58.6 2004 441,345 1,199,290 1,984,217 3,624,852 1,071,894 4,696,746 8,071,089 58.2

2005-Q3 411,870 1,284,393 2,226,000 3,922,263 1,410,000 5,332,263 8,784,300 60.7

Source: Inside MBS & ABS

Estimates in italics

(Dollars in Millions)

Page 26: Mortgage Backed Securities Market

261-29-06 NY (tom).ppt

U.S. Mortgage Market—Agency vs. Non-Agency

1999 2000 2001 2002 2003 2004 2005Agency Pass Throughs (not in CMOs) 523 402 710 907 1,620 701 665Agency CMOs 161 79 354 536 516 318 295Total Agency 684 481 1,064 1,443 2,136 1,019 960

Resi A—Prime-Jumbo 75 54 142 172 237 233 280Resi A—Alt–A 12 16 11 53 74 159 332Resi B&C—Subprime Home Equity 56 52 87 123 195 362 465Other * 5 13 27 66 80 110 114Total Non–Agency 148 136 267 414 586 864 1,191Source: Inside MBS & ABS

* Scatch & Dent, Seconds, Resecuritizations.

2005p = Based on first three quarters of 2005.

($ billion)

Page 27: Mortgage Backed Securities Market

271-29-06 NY (tom).ppt

Loan and Borrower Characteristics

Residential B/CSubprime

Agency* Jumbo A Alt-A Home Equity HELOC HEL ClosedLien 1st 1st 1st 1st or 2nd 2nd 2ndLoan Limit <=Agency >= Agency none none none noneCredit Agency A A/A- A-/C A A/A-FICO: Min 660 600 600 500 680 680 Avg 715 735 710 620 720 720Avg CLTV 70% 70% 80% 83% 85% 75%Occupancy Owner Owner 20% Investor 5% Investor Owner OwnerDocumentation (Low/No Doc) 0% 35% 60% 35% 0% 0%Avg Loan Size 180,000 430,000 235,000 165,000 40,000 30,000Loan Purpose:

Purchase - 45 45 27 0 0Cash Out - 15 35 66 85 85Rate Refi - 40 20 7 15 15

AAA Credit Support Agency 2.50-3.00% 6.00-7.50% 18-22% Monoline*FNMA & FHLMC

Agency Limit = $359,650 as of January 1, 2005.

$417,000 as of January 1, 2006.

Residential A HEL

Page 28: Mortgage Backed Securities Market

281-29-06 NY (tom).ppt

Distribution of Credit Scores & LTV Across Products

2005 Vintage Loans

FICO

LTV

0

5

10

15

20

25

30

420-

449

450-

479

480-

509

510-

539

540-

569

570-

599

600-

629

630-

659

660-

689

690-

719

720-

749

750-

779

780-

809

810-

839

840-

869

FICO

%

SubPrime

ALT-A

Prime

0

5

10

15

20

25

30

35

10 20 30 40 50 60 70 80 90 100 110

LTV

%

SubPrime

ALT-A

Prime

Page 29: Mortgage Backed Securities Market

291-29-06 NY (tom).ppt

Loan Size Distribution Across Products2005 Vintage Loans

Loan Size—

ARMs

Loan Size—

Fixed

0

5

10

15

20

25

30

35

<100K

100K

-200

K

200K

-300

K

300K

-400

K

400K

-500

K

500K

-600

K

600K

-700

K

700K

-800

K

800K

-900

K

900K

-100

0K

1000

K-1100

K

1100

K-1200

K

1200

K-

Loan Size

%

SubPrime

ALT-A

Prime

0

5

10

15

20

25

30

35

40

<100K

100K

-200

K

200K

-300

K

300K

-400

K

400K

-500

K

500K

-600

K

600K

-700

K

700K

-800

K

800K

-900

K

900K

-100

0K

1000

K-1100

K

1100

K-1200

K

1200

K-

Loan Size

%

SubPrime

ALT-A

Prime

Page 30: Mortgage Backed Securities Market

301-29-06 NY (tom).ppt

Enhancement Reflects Collateral Differences

In Non-Agency MBS, credit enhancement structures come mainly in two flavors

— “Six-pack” structures where several locked-out subs provide credit enhancement. Mainly used on Jumbos and Alt-As

— Excess-spread / Over-collateralization structures, where locked-out subs are complemented by excess interest from the collateral to cover losses. Mainly used in Subprime, High-LTV, Scratch & Dent, sometimes Alt-A

Dea

l Co

llate

ral F

ace

Val

ue

- T

ota

l Pri

nci

pal

Pay

men

ts

AA “M1”

AAAs

A “M2”

BBB “M3”

BB “B1”

B “B2”

N.R. “B3”

AA “M1”

AAAs

A “M2”

BBB “M3”

Interest on the bonds

Inte

rest

P

aym

ents IO

XS – OC

Interest on the bonds

Residual

Exc

ess

-Sp

rea

d O

/C-b

ase

d

Cre

dit

En

ha

nce

me

nt

Cla

ssic

“S

ix P

ack

” C

red

it E

nh

an

cem

en

t

Collateral “Six-Pack” Deal Deal with XS / OC

Page 31: Mortgage Backed Securities Market

311-29-06 NY (tom).ppt

Typical Evolution—OC Target & Actual OC

OC

Rel

ativ

e to

Orig

. B

alan

ce

Deal seasoning1 yr 2 yrs 3 yrs 4 yrs

Target OC Actual OC

Step-Down Date

OC

Bui

ld-U

pOC at Target

OC Release

Triggers playing a roleAfter step-down

OC allowed to decreaseAlong with collateral balance

OC

Rel

ativ

e to

Orig

. B

alan

ce

Deal seasoning1 yr 2 yrs 3 yrs 4 yrs

Target OC Actual OC

Step-Down Date

OC

Bui

ld-U

pOC at Target

OC Release

Triggers playing a roleAfter step-down

OC allowed to decreaseAlong with collateral balance

Page 32: Mortgage Backed Securities Market

321-29-06 NY (tom).ppt

Credit vs. Prepayment Stability

(More)

(Less)

(Lower) (Higher)Credit

PrepaymentStability

Subprime

Alt-AJumbo

Agency

Prepayment stability a key attribute of Subprime

Page 33: Mortgage Backed Securities Market

331-29-06 NY (tom).ppt

Prepayment Sensitivity of Non-Agency Sectors

0

10

20

30

40

50

60

70

80

90

100

Jan-

99

May

-99

Sep

-99

Jan-

00

May

-00

Sep

-00

Jan-

01

May

-01

Sep

-01

Jan-

02

May

-02

Sep

-02

Jan-

03

May

-03

Sep

-03

Jan-

04

May

-04

Sep

-04

1-m

onth

CP

RJumboAlt ASubprimeFN 99 7%

Page 34: Mortgage Backed Securities Market

341-29-06 NY (tom).ppt

Historical Cumulative Loss Comparison*

Resi A—Prime-Jumbo

Resi A— Alt-A

Resi B&C— Subprime

10 - 20 bps

50 – 80 bps

400 – 500 bps

*Cum losses for 2003-2005 vintages will be much less because of strong housing price appreciation.

Page 35: Mortgage Backed Securities Market

351-29-06 NY (tom).ppt

Loss Coverage by Rating Level

Jumbo Alt-A

Rating Enhancement Loss Coverage Rating Enhancement Loss CoverageAAA 2.60-3.00 28.0 AAA 6.00-7.50 11.3AA 1.20-1.50 13.5 AA 3.00-3.75 5.6A .65-.90 7.8 A 2.00-2.50 3.8

BBB .45-.55 4.8 BBB 1.50-2.00 2.9BB .30-.35 3.3 BB .75-.90 1.4B .15-.20 1.8 B .35-.50 0.7

Current loss = 10 bps Current loss = 60 bps

Subprime

Rating Enhancement Loss CoverageAAA 18.00-22.00 5.0AA 14.00-16.00 3.8A 11.00-13.00 3.0

BBB 8.00-10.00 2.3Current loss = 400-450 bps

Page 36: Mortgage Backed Securities Market

361-29-06 NY (tom).ppt

MBS Issuance By Sector—Agency vs. Non-Agency

0

100,000

200,000

300,000

400,000

500,000

600,000

700,000

2002

-Q1

2002

-Q2

2002

-Q3

2002

-Q4

2003

-Q1

2003

-Q2

2003

-Q3

2003

-Q4

2004

-Q1

2004

-Q2

2004

-Q3

2004

-Q4

2005

-Q1

2005

-Q2

2005

-Q3

2005

-Q4

Non

-Age

ncy

($m

m)

Agency

Non-Agency

Source: Inside MBS & ABS

Page 37: Mortgage Backed Securities Market

371-29-06 NY (tom).ppt

Non-Agency MBS Issuance By Sector

0

20,000

40,000

60,000

80,000

100,000

120,000

140,000

2002

-Q1

2002

-Q2

2002

-Q3

2002

-Q4

2003

-Q1

2003

-Q2

2003

-Q3

2003

-Q4

2004

-Q1

2004

-Q2

2004

-Q3

2004

-Q4

2005

-Q1

2005

-Q2

2005

-Q3

2005

-Q4

Non

-Age

ncy

($m

m)

Prime JumboSubprime Home EquityAlt-AAll Other

Source: Inside MBS & ABS

Page 38: Mortgage Backed Securities Market

381-29-06 NY (tom).ppt

RMBS Issuance—By Type ($million)

Date Agency Alt-A Jumbo Subprime Seconds S&D Re-MBS Other Total MBS Agency Alt-A Jumbo Subprime1995 269,132 498 25,838 17,772 2,012 2,068 739 318,058 84.6 0.2 8.1 5.61996 370,648 1,803 31,419 30,769 5,141 0 762 440,541 84.1 0.4 7.1 7.01997 367,884 6,518 49,975 56,921 4,570 924 224 487,016 75.5 1.3 10.3 11.71998 725,952 21,236 97,365 75,830 7,375 790 616 929,163 78.1 2.3 10.5 8.21999 685,078 12,023 74,631 55,852 3,266 1,374 754 832,977 82.2 1.4 9.0 6.72000 479,011 14,696 56,052 48,145 3,825 2,374 1,062 605,165 79.2 2.4 9.3 8.02001 1,087,499 11,374 142,203 87,053 15,512 5,522 4,736 921 1,354,819 80.3 0.8 10.5 6.42002 1,444,426 53,463 171,534 122,681 24,803 25,172 14,357 1,945 1,858,381 77.7 2.9 9.2 6.62003 2,131,953 74,151 237,455 194,959 20,351 47,033 7,748 4,520 2,718,170 78.4 2.7 8.7 7.22004 1,018,871 158,586 233,378 362,549 49,133 34,701 21,383 4,432 1,883,033 54.1 8.4 12.4 19.32005 960,372 332,323 280,704 464,990 60,736 29,004 16,786 6,721 2,151,635 44.6 15.4 13.0 21.62005-Q1 198,851 59,563 64,118 98,220 10,356 6,674 2,631 791 441,202 45.1 13.5 14.5 22.32005-Q2 229,104 82,050 66,522 119,213 12,366 8,147 10,371 774 528,547 43.3 15.5 12.6 22.62005-Q3 287,455 103,755 70,775 118,974 21,414 7,081 2,820 2,706 614,980 46.7 16.9 11.5 19.32005-Q4 244,962 86,955 79,289 128,583 16,600 7,102 965 2,450 566,907 43.2 15.3 14.0 22.7Source: Inside MBS & ABS, based on SEC filingss and industry surveys.

Note: MBS are backed by 1-4 family mortgage loans. Agency CMO/REMICs are backed by FNMA, FHLMC or GNMA collateral. Starting January 2001, Non-Agency MBS include private-label jumbo and Alt-A transactions, plus mortgage-related ABS, including subprime HEL, second liens, HELOCs, high LTV loans and manufactured housing loans. ABS data prior to 2001 include some mortgage-related collateral.

% of Total

Page 39: Mortgage Backed Securities Market

391-29-06 NY (tom).ppt

Factors Behind Growth in Subprime HEQ Issuance

More subprime borrowers— Increase in consumer debt burden

Greater % of subprime borrowers taking out mortgages— Aggressive marketing programs— Internet access

Expanded definition of subprime— Includes more Alt-A

Securitizers accounting for greater share of subprime lending— More aggressive lending— Rapid expansion into new geographic areas

Consumers shifting installment debt to mortgage debt

Lower rates = Increased rate refis

Greater housing inflation = Increased cash-out refis

Competitive pricing

Page 40: Mortgage Backed Securities Market

401-29-06 NY (tom).ppt

GNMA 1s and 2s 30-Yr / All Pass-Thru Production

5

10

15

20

25

30

35

Ja

n-9

0

Ja

n-9

1

Ja

n-9

2

Ja

n-9

3

Ja

n-9

4

Ja

n-9

5

Ja

n-9

6

Ja

n-9

7

Ja

n-9

8

Ja

n-9

9

Ja

n-0

0

Ja

n-0

1

Ja

n-0

2

Ja

n-0

3

Ja

n-0

4

Ja

n-0

5

Ja

n-0

6

Page 41: Mortgage Backed Securities Market

411-29-06 NY (tom).ppt

Subprime Profitability

-

2

4

6

8

10

12Ja

n-00

May

-00

Sep

-00

Jan-

01

May

-01

Sep

-01

Jan-

02

May

-02

Sep

-02

Jan-

03

May

-03

Sep

-03

Jan-

04

May

-04

Sep

-04

Jan-

05

May

-05

Sep

-05

2/28 HEL WACsLIBOR+90Profitability

Page 42: Mortgage Backed Securities Market

421-29-06 NY (tom).ppt

Evolution of Non-Agency Loan Characteristics

Class TypeOrigYear # Loans

OrigAmount ARM %

OrigWAC FICO CLTV

LoanSize

Inves%

Full Doc% DTI CA

Prime 1998 299,312 98,691 9.0 7.23 725 72.3 330 0.6 72.2 25.2 46.1 1999 200,871 70,479 19.4 7.19 721 72.4 351 0.9 65.2 23.4 48.8 2000 124,263 45,722 33.1 7.92 725 74.5 368 1.1 64.0 29.9 38.0 2001 274,548 119,939 27.3 6.99 729 69.2 437 0.5 72.5 31.0 46.0 2002 357,834 167,779 43.1 6.08 734 65.9 469 0.5 66.8 30.9 47.9 2003 462,067 215,880 50.3 5.14 736 66.0 467 1.0 53.4 31.2 47.4 2004 440,404 189,105 76.5 4.46 733 71.7 429 2.5 49.3 33.7 49.3 2005 153,368 72,043 63.4 4.97 737 73.2 470 2.6 46.4 34.5 47.6

ALT-A 1998 153,616 23,761 0.4 7.89 711 74.4 155 18.5 39.5 30.4 41.3 1999 91,918 13,811 3.7 8.25 698 76.9 150 20.2 37.6 27.0 32.5 2000 65,887 12,590 8.0 9.20 695 78.6 191 15.3 33.6 34.0 35.1 2001 106,964 29,220 20.8 7.83 703 75.9 273 8.8 31.6 34.9 43.1 2002 182,154 46,934 30.1 7.00 709 74.7 258 13.0 31.7 35.0 43.7 2003 377,563 88,173 35.0 5.94 711 73.8 234 19.2 30.5 34.1 44.4 2004 742,341 182,698 68.2 5.33 710 79.3 246 17.3 31.8 35.3 43.1 2005 461,508 121,895 62.5 4.51 714 77.9 264 14.9 31.5 36.0 43.0

Subprime 1998 313,046 28,975 52.5 9.77 602 77.7 93 6.2 72.2 35.9 18.5 1999 455,706 43,496 54.4 9.88 602 78.2 95 5.0 68.9 37.8 18.8 2000 410,275 42,145 68.6 10.52 595 79.0 103 5.0 74.9 38.9 19.7 2001 489,668 60,551 70.1 9.54 603 79.9 124 4.9 72.9 39.1 25.1 2002 681,806 97,524 74.4 8.47 612 80.3 143 5.2 67.4 39.3 29.9 2003 1,070,217 174,756 68.6 7.45 621 81.7 163 5.4 65.1 39.7 32.9 2004 1,645,204 293,860 78.1 7.05 622 83.5 179 5.4 62.0 40.2 33.6 2005 722,406 136,169 84.2 7.18 622 84.6 189 5.3 59.6 40.4 30.0

Source: Loan Performance

Page 43: Mortgage Backed Securities Market

431-29-06 NY (tom).ppt

IO% Peaked When Option ARMs Took Off

Option ARMs %—1st Lien Fixed and ARMs

IO%—1st Lien Fixed and ARMs

Source: Loan Performance

0

10

20

30

40

50

60

Jan

-01

Ap

r-0

1

Jul-

01

Oct

-01

Jan

-02

Ap

r-0

2

Jul-

02

Oct

-02

Jan

-03

Ap

r-0

3

Jul-

03

Oct

-03

Jan

-04

Ap

r-0

4

Jul-

04

Oct

-04

Jan

-05

Ap

r-0

5

Jul-

05

%

Subprime

Alt-A & Prime

0

5

10

15

20

25

30

35Ja

n-0

1

Ap

r-0

1

Jul-

01

Oct

-01

Jan

-02

Ap

r-0

2

Jul-

02

Oct

-02

Jan

-03

Ap

r-0

3

Jul-

03

Oct

-03

Jan

-04

Ap

r-0

4

Jul-

04

Oct

-04

Jan

-05

Ap

r-0

5

Jul-

05

%

Alt-A & Prime

Page 44: Mortgage Backed Securities Market

441-29-06 NY (tom).ppt

Dominance of “Affordability” Mortgages

0

10

20

30

40

50

60

70

80

Jan-

01

Apr

-01

Jul-0

1

Oct

-01

Jan-

02

Apr

-02

Jul-0

2

Oct

-02

Jan-

03

Apr

-03

Jul-0

3

Oct

-03

Jan-

04

Apr

-04

Jul-0

4

Oct

-04

Jan-

05

Apr

-05

Jul-0

5

%

Alt-A & Prime

Subprime

Affordability = IO + Option ARMs

Page 45: Mortgage Backed Securities Market

451-29-06 NY (tom).ppt

U.S. Annual Home Price Appreciation

0

2

4

6

8

10

12

14

16

Ma

r-9

0

Ma

r-9

1

Ma

r-9

2

Ma

r-9

3

Ma

r-9

4

Ma

r-9

5

Ma

r-9

6

Ma

r-9

7

Ma

r-9

8

Ma

r-9

9

Ma

r-0

0

Ma

r-0

1

Ma

r-0

2

Ma

r-0

3

Ma

r-0

4

Ma

r-0

5

%

Source: Freddie Mac

Page 46: Mortgage Backed Securities Market

461-29-06 NY (tom).ppt

Subprime Cumulative Loss by Vintage & Foreclosure by States

0

50

100

150

200

250

300

350

400

450

3 7 11 15 19 23 27 31 35 39 43 47 51 55 59 63 67 71

Seasoning B

ps

1998 1999 20002001 2002 2003

c

0

5

10

15

20

25

30

3 6 9 12 15 18 21 24 27 30 33

Loan Age

FC

Fre

q %

CA MA

MS NCNE OK

TN TXUT

Vintage Year

1998-2003

2001

Page 47: Mortgage Backed Securities Market

471-29-06 NY (tom).ppt

2001 Subprime Mortgages—Loss Severity & Cumulative Loss Rates, by States

0

10

20

30

40

50

CA MA UT NE TX NC TN OK MS

Loss

Sev

erity

(%

)

0

0.5

1

1.5

2

2.5

3

3.5

5 8 11 14 17 20 23 26 29 32

Loan Age

Cum

ulat

ive

Loss

Rat

e (%

)

CA MAMS NCNE OKTN TXUT

Loss Severity

Cumulative

Loss Rates

Page 48: Mortgage Backed Securities Market

481-29-06 NY (tom).ppt

Subprime 2/28 ARM with 2-year Penalties

0

20

40

60

80

100

0 3 6 9 12 15 18 21 24 27 30 33 36

Loan Age

CP

R (

%)

2000

2001

2002

2003

2004

Page 49: Mortgage Backed Securities Market

491-29-06 NY (tom).ppt

Impact of Prepayments & HPA on Subprime Losses

HPA/CPR/LS Housing CPR CPR Loss Cum CumCombination Appreciation ARM* Fixed* CDR** Severity Defaults Loss

A 7 - 12% 70 30 Base 20 6.67 1.50

B 5 - 7% 50 25 Base 35 11.58 4.09

C 2 - 3% 45 20 Base 45 13.35 6.07

D 0% 40 18 Base 55 14.99 8.33

E -2 - 3% 35 15 Base x 1.20 60 20.04 12.15

* ARM CPR Vectors identified by peak speed at 24 months.

Fixed CPR Vectors identified by speed at end of 12 month seasoning ramp.

**Base CDR curve based on historical current losses.

For combination E, base CDR multiplied by 1.20 to account for recession.

Page 50: Mortgage Backed Securities Market

501-29-06 NY (tom).ppt

Loss Coverage Ratios If Housing Inflation Slows

Source: UBS

7 - 12% HPI 5 - 7% HPI 2 - 3% HPI 0% HPI -2-3% HPI70/30 CPR 50/25 CPR 45/20 CPR 40/18 CPR 35/15 CPR

Rating EnhancementCum Loss =

1.50%Cum Loss =

4.00%Cum Loss =

6.00%Cum Loss =

8.33%Cum Loss =

12.00%

AAA 18.00 - 22.00 13.3 5.0 3.3 2.4 1.7AA 14.00 - 16.00 10.0 3.8 2.5 1.8 1.3A 11.00 - 13.00 8.0 3.0 2.0 1.4 1.0

BBB 8.00 - 10.00 6.0 2.3 1.5 1.1 0.8

Source: UBS

Subprime

Loss Coverage

Page 51: Mortgage Backed Securities Market

511-29-06 NY (tom).ppt

Impact of Lower Housing Inflation on Losses

Cumulative Cumulative LossLosses = Defaults x Severity

Jumbo5 - 7% Housing Inflation 10.0 bp = 1.00% x 10%2 - 3% Housing Inflation 24.0 bp = 1.20% x 20%0% Housing Inflation 42.0 bp = 1.40% x 30%

Alt-A5 - 7% Housing Inflation 60.0 bp = 3.00% x 20%2 - 3% Housing Inflation 105.0 bp = 3.50% x 30%0% Housing Inflation 160.0 bp = 4.00% x 40%

Subprime5 - 7% Housing Inflation 4.00% = 11.50% x 35%2 - 3% Housing Inflation 6.00% = 13.35% x 45%0% Housing Inflation 8.33% = 15.15% x 55%

Source: UBS

Page 52: Mortgage Backed Securities Market

521-29-06 NY (tom).ppt

Loss Coverage Ratios If Housing Inflation Slows

5 - 7% HPI 2 - 3% HPI 0% HPIRating Enhancement Cum Loss = 10.0 bps Cum Loss = 24.0 bps Cum Loss = 42.0 bpsAAA 2.60 - 3.00 28 11.7 6.7AA 1.20 - 1.50 13.5 5.6 3.2A .65 - .90 7.8 3.3 1.9

BBB .45 - .55 4.8 2.0 1.1BB .30 - .35 3.3 1.4 0.8B .15 - .20 1.8 0.8 0.4

5 - 7% HPI 2 - 3% HPI 0% HPIRating Enhancement Cum Loss = 60.0 bps Cum Loss = 105.0 bps Cum Loss = 160.0 bpsAAA 6.00 - 7.50 11.3 6.4 4.2AA 3.00 - 3.75 5.6 3.2 2.1A 2.00 - 2.50 3.8 2.1 1.4

BBB 1.50 - 2.00 2.9 1.7 1.1BB .75 - .90 1.4 0.8 0.5B .35 - .50 1.8 0.4 0.3

5 - 7% HPI 2 - 3% HPI 0% HPIRating Enhancement Cum Loss = 4.00% Cum Loss = 6.00% Cum Loss = 8.33%AAA 18.00 - 22.00 5.0 3.3 2.3AA 14.00 - 16.00 3.8 2.5 1.8A 11.00 - 13.00 3.0 2.0 1.4

BBB 8.00 - 10.00 2.3 1.5 1.1

Source: UBS

Loss CoverageSubprime

Loss CoverageJumbo

Loss CoverageAlt-A

Page 53: Mortgage Backed Securities Market

531-29-06 NY (tom).ppt

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