Exhibit 99.1

Mortgage Rates⁽¹⁾

Mortgage Rate (%)	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
4.875		2	$	1,647,750.00		0.19	%		823,875.00		359		784		66.00
5.500		1		503,361.00		0.06			503,361.00		359		661		80.00
5.625		2		1,130,588.42		0.13			565,294.21		359		697		71.93
5.750		4		3,234,657.00		0.37			808,664.25		360		751		78.14
5.875		23		13,611,938.27		1.57			591,823.40		360		668		67.66
5.905		1		456,000.00		0.05			456,000.00		360		625		86.86
5.985		2		952,000.00		0.11			476,000.00		360		620		84.77
6.000		58		39,398,313.66		4.54			679,281.27		360		699		71.19
6.060		1		450,500.00		0.05			450,500.00		360		642		85.00
6.085		1		453,000.00		0.05			453,000.00		360		653		83.89
6.125		74		50,749,525.93		5.85			685,804.40		360		692		67.38
6.155		1		537,200.00		0.06			537,200.00		360		646		88.79
6.250		175		116,587,941.07		13.45			666,216.81		360		702		71.87
6.375		202		133,539,690.63		15.40			661,087.58		360		707		72.86
6.500		204		142,071,326.91		16.39			696,428.07		359		709		73.31
6.585		1		420,000.00		0.05			420,000.00		360		633		84.00
6.625		125		78,602,336.10		9.07			628,818.69		360		704		75.67
6.685		1		570,000.00		0.07			570,000.00		359		713		100.00
6.750		119		82,615,707.71		9.53			694,249.64		360		713		75.18
6.875		121		79,555,811.42		9.18			657,486.04		360		704		76.69
6.885		1		465,000.00		0.05			465,000.00		360		653		86.92
6.900		1		487,500.00		0.06			487,500.00		359		724		100.00
6.910		1		584,500.00		0.07			584,500.00		360		638		89.92
6.950		1		474,000.00		0.05			474,000.00		359		740		92.76
7.000		28		17,452,980.54		2.01			623,320.73		360		711		77.56
7.060		1		430,000.00		0.05			430,000.00		359		704		100.00
7.090		1		449,650.00		0.05			449,650.00		360		676		85.00
7.125		21		12,586,103.00		1.45			599,338.24		360		696		78.40
7.250		24		16,034,339.35		1.85			668,097.47		360		703		76.83
7.275		1		750,000.00		0.09			750,000.00		358		720		98.18
7.375		23		15,632,984.44		1.80			679,694.98		360		687		76.63
7.500		22		13,545,207.71		1.56			615,691.26		360		708		76.65
7.625		9		5,343,000.00		0.62			593,666.67		360		709		75.94
7.710		1		425,850.00		0.05			425,850.00		360		649		85.00
7.750		13		7,996,521.22		0.92			615,117.02		360		730		75.64
7.875		13		8,287,000.00		0.96			637,461.54		360		701		79.05
8.000		4		3,119,200.00		0.36			779,800.00		360		710		69.60
8.125		5		3,595,200.00		0.41			719,040.00		360		721		75.95
8.250		6		4,767,416.00		0.55			794,569.33		360		724		75.73
8.375		2		1,519,920.00		0.18			759,960.00		360		682		80.00
8.500		3		1,966,400.00		0.23			655,466.67		359		691		80.00
8.625		3		1,888,000.00		0.22			629,333.33		360		698		79.98
8.750		2		1,045,500.00		0.12			522,750.00		360		716		77.52
9.000		2		1,011,000.00		0.12			505,500.00		360		744		78.22
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)

The lender acquired mortgage insurance Mortgage Loans are shown in the preceding table at the mortgage rates net of interest premium charge by the related lenders. As of the cut-off date, the weighted average mortgage rate of the Mortgage Loans (net of such premiums) was approximately 6.592% per annum. Without the adjustment, the weighted average mortgage rate of the Mortgage Loans was approximately 6.596% per annum.

Current Mortgage Loan Principal Balances⁽¹⁾

Range of Current Mortgage Loan Principal Balances ($)	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
400,000.01 – 450,000.00		181	$	78,903,063.70		9.10	%		435,928.53		6.597		360		698		76.90
450,000.01 – 500,000.00		269		128,460,564.54		14.82			477,548.57		6.582		359		699		76.49
500,000.01 – 550,000.00		182		95,752,046.57		11.04			526,110.15		6.631		360		700		76.51
550,000.01 – 600,000.00		168		96,842,037.29		11.17			576,440.70		6.576		360		702		76.92
600,000.01 – 650,000.00		137		86,745,055.94		10.01			633,175.59		6.638		360		706		74.56
650,000.01 – 700,000.00		40		26,957,323.80		3.11			673,933.10		6.575		360		708		72.79
700,000.01 – 750,000.00		50		36,337,237.14		4.19			726,744.74		6.651		360		698		75.50
700,000.01 – 1,000,000.00		153		136,150,127.32		15.70			889,870.11		6.650		360		707		71.27
1,000,000.01 – 1,500,000.00		95		120,747,834.96		13.93			1,271,029.84		6.475		360		715		69.22
1,500,000.01 – 2,000,000.00		24		42,562,932.45		4.91			1,773,455.52		6.636		360		714		70.89
Above 2,000,000.00		7		17,486,696.67		2.02			2,498,099.52		6.622		360		708		63.95
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)	As of the cut-off date, the average current mortgage loan principal balance of the Mortgage Loans was approximately $663,817.

FICO Credit Scores⁽¹⁾

Range of FICO Credit Scores	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
619 and Below		6	$	4,569,080.53		0.53	%		761,513.42		6.981		360		612		68.26
620 – 639		109		64,048,416.50		7.39			587,600.15		6.430		359		629		74.11
640 – 659		136		83,927,656.19		9.68			617,115.12		6.448		359		649		73.93
660 – 679		139		92,682,562.20		10.69			666,781.02		6.804		360		669		72.81
680 – 699		291		196,149,469.50		22.63			674,053.16		6.506		360		690		73.55
700 – 719		175		108,701,796.87		12.54			621,153.12		6.697		360		708		76.76
720 and Above		450		316,865,938.59		36.55			704,146.53		6.622		360		753		73.40
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)	As of the cut-off date, the weighted average FICO Credit Score of the mortgagors related to the Mortgage Loans was approximately 705.

Documentation Programs

Type of Program	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
Full/Alternative		362	$	244,439,961.98		28.20	%		675,248.51		6.450		360		670		73.11
Preferred		36		23,418,167.00		2.70			650,504.64		6.358		360		755		70.25
Reduced		906		597,366,791.40		68.90			659,345.24		6.665		360		717		74.33
Stated Income/Stated Asset		1		1,260,000.00		0.15			1,260,000.00		6.625		359		769		80.00
Streamlined		1		460,000.00		0.05			460,000.00		6.375		360		669		47.92
Total		1,306	$	866,944,920.38		100.00	%

Original Loan-to-Value Ratios⁽¹⁾⁽²⁾

Range of Original Loan-to-Value Ratios (%)	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
50.00 or Less		40	$	34,578,945.98		3.99	%		864,473.65		6.328		360		715		42.16
50.01 - 55.00		27		21,115,860.48		2.44			782,068.91		6.365		360		702		53.21
55.01 - 60.00		46		35,323,568.12		4.07			767,903.65		6.468		360		711		57.98
60.01 - 65.00		50		40,604,504.84		4.68			812,090.10		6.390		360		698		62.81
65.01 - 70.00		134		106,431,082.78		12.28			794,261.81		6.552		360		701		68.43
70.01 - 75.00		147		118,631,812.94		13.68			807,019.14		6.561		360		699		73.75
75.01 - 80.00		818		488,099,069.54		56.30			596,698.13		6.656		360		708		79.62
80.01 - 85.00		13		6,252,542.93		0.72			480,964.84		6.729		360		644		84.54
85.01 - 90.00		26		13,196,032.77		1.52			507,539.72		6.805		355		661		88.78
90.01 - 95.00		1		474,000.00		0.05			474,000.00		7.250		359		740		92.76
95.01 - 100.00		4		2,237,500.00		0.26			559,375.00		7.642		359		716		99.39
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)	As of the cut-off date, the weighted average original Loan-to-Value Ratio of the Mortgage Loans was approximately 73.87%.

(2)	Does not take into account any secondary financing on the Mortgage Loans that may exist at the time of origination.

Original Combined Loan-to-Value Ratios⁽¹⁾⁽²⁾

Range of Original Combined Loan-to-Value Ratios (%)	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
50.00 or Less		36	$	29,043,945.98		3.35	%		806,776.28		6.293		360		707		42.00
50.01 - 55.00		24		20,161,360.48		2.33			840,056.69		6.382		360		707		51.96
55.01 - 60.00		42		31,443,068.12		3.63			748,644.48		6.392		360		713		57.89
60.01 - 65.00		45		34,310,504.84		3.96			762,455.66		6.320		360		699		62.13
65.01 - 70.00		119		95,054,799.52		10.96			798,779.83		6.528		360		698		67.82
70.01 - 75.00		118		96,744,693.53		11.16			819,870.28		6.549		360		699		73.31
75.01 - 80.00		384		250,734,694.73		28.92			652,954.93		6.576		360		700		78.60
80.01 - 85.00		39		24,772,090.02		2.86			635,181.80		6.578		360		688		77.47
85.01 - 90.00		177		107,596,426.88		12.41			607,889.42		6.671		359		698		79.17
90.01 - 95.00		80		47,929,592.00		5.53			599,119.90		6.757		360		713		79.46
95.01 - 100.00		242		129,153,744.28		14.90			533,693.16		6.823		360		726		79.97
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)	As of the cut-off date, the weighted average original Combined Loan-to-Value Ratio of the Mortgage Loans was approximately 79.57%.

(2)	Takes into account any secondary financing on the Mortgage Loans that may exist at the time of origination.

Geographic Distribution of Mortgaged Properties⁽¹⁾

State	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
California		581	$	368,968,268.51		42.56	%		635,057.26		6.560		360		707		73.87
Florida		76		54,339,405.70		6.27			714,992.18		6.682		360		706		72.23
Illinois		37		23,581,642.28		2.72			637,341.68		6.805		360		711		71.26
Maryland		33		24,007,583.52		2.77			727,502.53		6.508		359		696		74.79
Nevada		32		22,028,944.84		2.54			688,404.53		6.767		360		702		77.96
New Jersey		59		40,570,141.58		4.68			687,629.52		6.624		359		682		72.63
New York		98		74,383,305.13		8.58			759,013.32		6.488		360		716		71.32
Texas		31		21,443,686.85		2.47			691,731.83		6.672		360		710		75.06
Utah		29		19,291,706.52		2.23			665,231.26		6.879		360		705		77.80
Virginia		45		27,255,900.72		3.14			605,686.68		6.641		360		694		75.78
Washington		32		21,749,975.50		2.51			679,686.73		6.438		360		706		75.10
Other (less than 2%)		253		169,324,359.23		19.53			669,266.24		6.618		360		701		74.43
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)	The Other row in the preceding table includes 34 other states and the District of Columbia with under 2% concentrations individually. As of the cut-off date, no more than approximately 0.811% of the Mortgage Loans were secured by mortgaged properties located in any one postal zip code area.

Loan Purpose

Loan Purpose	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
Refinance (Cash-Out)		432	$	292,850,346.26		33.78	%		677,894.32		6.552		360		692		71.39
Purchase		577		367,663,151.13		42.41			637,197.84		6.645		360		716		77.44
Refinance (Rate/Term)		297		206,431,422.99		23.81			695,055.30		6.569		360		702		71.03
Total		1,306	$	866,944,920.38		100.00	%

Types of Mortgaged Properties

Property Type	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
2 to 4 Family Residence		47	$	35,180,473.00		4.06	%		748,520.70		6.671		360		717		72.64
Cooperative		2		1,644,000.00		0.19			822,000.00		6.625		360		764		61.75
Hi-rise Condominium		90		65,860,539.63		7.60			731,783.77		6.435		360		736		71.65
Low-rise Condominium		53		29,018,410.56		3.35			547,517.18		6.632		360		716		73.32
Planned Unit Development		268		179,550,545.34		20.71			669,964.72		6.562		360		703		75.37
Single Family Residence		846		555,690,951.85		64.10			656,845.10		6.619		360		700		73.79
Total		1,306	$	866,944,920.38		100.00	%

Occupancy Types⁽¹⁾

Occupancy Type	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
Investment Property		92	$	60,293,202.15		6.95	%		655,360.89		6.817		360		730		71.76
Owner Occupied		1,153		757,389,423.46		87.36			656,885.88		6.585		360		702		74.43
Secondary/Vacation Home		61		49,262,294.77		5.68			807,578.60		6.491		360		719		67.85
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)	Based upon representations of the related borrowers at the time of origination.

Remaining Terms to Maturity⁽¹⁾

Remaining Term to Maturity (Months)	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Mortgage Rate (%)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
360		1,187	$	782,115,384.05		90.22	%		658,900.91		6.592		704		74.00
359		102		72,706,887.41		8.39			712,812.62		6.616		709		71.86
358		10		7,383,356.96		0.85			738,335.70		6.811		695		77.41
357		4		3,285,800.04		0.38			821,450.01		6.592		673		74.48
356		1		478,291.92		0.06			478,291.92		6.625		691		68.57
300		2		975,200.00		0.11			487,600.00		6.500		637		88.29
Total		1,306	$	866,944,920.38		100.00	%

_________

(1)	As of the cut-off date, the weighted average remaining term to maturity of the Mortgage Loans was approximately 360 months.

Interest-Only Periods at Origination

Interest-Only Period (months)	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Current Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
0		706	$	469,722,392.53		54.18	%		665,329.17		6.532		360		700		72.66
120		600		397,222,527.85		45.82			662,037.55		6.671		360		710		75.30
Total		1,306	$	866,944,920.38		100.00	%

Prepayment Charge Periods at Origination

Prepayment Charge Period (months)	Number of Mortgage Loans		Aggregate Principal Balance Outstanding		Percent of Mortgage Loans			Average Principal Balance Outstanding ($)		Weighted Average Current Mortgage Rate (%)		Weighted Average Remaining Term to Maturity (Months)		Weighted Average FICO Credit Score		Weighted Average Original Loan-to-Value Ratio (%)
0		1,248	$	826,180,434.44		95.30	%		662,003.55		6.593		360		704		73.88
5		2		1,028,000.00		0.12			514,000.00		6.909		360		689		80.00
6		3		1,894,900.00		0.22			631,633.33		6.543		359		715		62.48
36		8		5,902,865.41		0.68			737,858.18		7.295		359		712		76.59
60		45		31,938,720.53		3.68			709,749.35		6.532		360		712		73.60
		1,306	$	866,944,920.38		100.00	%

Alternative Loan Trust 2007-12T1 8-K