		STRUCTURED ADJUSTABLE RATE MORTGAGE LOAN TRUST	Contact:
		Mortgage Pass-Through Certificates, Series 2005-19XS	Diana Kenneally
			Account Administrator
			617-603-6406
		STATEMENT TO CERTIFICATEHOLDERS	diana.kenneally@usbank.com
		Section 4.03 of the Trust Agreement, dated August 1, 2005
Distribution Date:	12/27/05

		Original	Beginning				Allocated	Ending
		Certificate	Certificate	Principal	Interest	Total	Realized	Certificate
Class	Cusip	Face Value	Balance(1)	Distribution	Distribution	Distribution	Losses	Balance
A1	863579YR3	$687,421,000.00	$659,923,887.61	$19,346,786.35	$2,647,761.29	$21,994,547.64	$0.00	$640,577,101.26
A2A	863579YS1	$100,000,000.00	$95,999,960.37	$2,814,401.42	$432,959.82	$3,247,361.24	$0.00	$93,185,558.95
A2B	863579ZD3	$146,326,000.00	$140,472,902.02	$4,118,201.01	$568,603.09	$4,686,804.10	$0.00	$136,354,701.01
A3	863579YT9	$108,842,000.00	$104,488,276.87	$3,063,250.79	$428,518.03	$3,491,768.82	$0.00	$101,425,026.08
2A1	863579YU6	$365,330,000.00	$334,713,391.01	$10,529,667.88	$1,336,994.05	$11,866,661.93	$0.00	$324,183,723.13
2A2	863579YV4	$130,910,000.00	$119,939,041.47	$3,773,133.39	$483,354.34	$4,256,487.73	$0.00	$116,165,908.08
2A3	863579YW2	$47,188,000.00	$43,233,393.08	$1,360,068.89	$176,536.36	$1,536,605.25	$0.00	$41,873,324.19
M1-I	863579YX0	$54,993,000.00	$54,993,000.00	$0.00	$236,775.42	$236,775.42	$0.00	$54,993,000.00
M2-I	863579YY8	$27,496,000.00	$27,496,000.00	$0.00	$125,717.82	$125,717.82	$0.00	$27,496,000.00
M3-I	863579YZ5	$14,894,000.00	$14,894,000.00	$0.00	$71,610.89	$71,610.89	$0.00	$14,894,000.00
M1-II	863579ZA9	$48,406,000.00	$48,406,000.00	$0.00	$208,414.72	$208,414.72	$0.00	$48,406,000.00
M2-II	863579ZB7	$9,437,000.00	$9,437,000.00	$0.00	$43,148.06	$43,148.06	$0.00	$9,437,000.00
M3-II	863579ZC5	$6,088,000.00	$6,088,000.00	$0.00	$34,600.13	$34,600.13	$0.00	$6,088,000.00
X-I*	NA	$1,145,703,175.15	$1,105,781,687.16	$0.00	$0.00	$0.00	$0.00	$1,077,243,738.87
X-II*	NA	$608,884,502.61	$565,470,132.57	$0.00	$725,677.83	$725,677.83	$0.00	$549,807,262.41
R	NA	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Total Group 1		$1,139,972,000.00	$1,098,268,026.88	$29,342,639.57	$4,511,946.36	$33,854,585.93	$0.00	$1,068,925,387.30
Total Group 2		$607,359,000.00	$561,816,825.56	$15,662,870.16	$3,008,725.49	$18,671,595.65	$0.00	$546,153,955.40
Total		$1,747,331,000.00	$1,660,084,852.44	$45,005,509.73	$7,520,671.85	$52,526,181.58	$0.00	$1,615,079,342.70
* Notional Balance

AMOUNTS PER $1,000 UNIT						PASS THROUGH RATES

					Ending	Original	Current
	Principal	Interest	Total	Realized	Certificate	Pass-Through	Pass-Through
Class	Distribution	Distribution	Distribution	Losses	Balance	Interest Rate	Interest Rate
A1	28.14401415	3.85173175	31.99574590	0.00000000	931.85558960	3.99000%	4.51375%
A2A	28.14401420	4.32959820	32.47361240	0.00000000	931.85558950	4.55000%	5.07375%
A2B	28.14401412	3.88586505	32.02987917	0.00000000	931.85558964	4.03000%	4.55375%
A3	28.14401417	3.93706501	32.08107918	0.00000000	931.85558957	4.09000%	4.61375%
2A1	28.82234659	3.65968864	32.48203523	0.00000000	887.37230211	3.97000%	4.49375%
2A2	28.82234657	3.69226446	32.51461103	0.00000000	887.37230219	4.01000%	4.53375%
2A3	28.82234657	3.74112825	32.56347482	0.00000000	887.37230207	4.07000%	4.59375%
M1-I	0.00000000	4.30555562	4.30555562	0.00000000	1000.00000000	4.32000%	4.84375%
M2-I	0.00000000	4.57222214	4.57222214	0.00000000	1000.00000000	4.62000%	5.14375%
M3-I	0.00000000	4.80803612	4.80803612	0.00000000	1000.00000000	4.32000%	5.40904%	Net Funds Cap
M1-II	0.00000000	4.30555551	4.30555551	0.00000000	1000.00000000	4.32000%	4.84375%
M2-II	0.00000000	4.57222210	4.57222210	0.00000000	1000.00000000	4.62000%	5.14375%
M3-II	0.00000000	5.68333279	5.68333279	0.00000000	1000.00000000	5.81718%	5.98584%	Net Funds Cap
X-I*	0.00000000	0.00000000	0.00000000	0.00000000	940.24679536	0.00000%	0.00000%
X-II*	0.00000000	1.19181524	1.19181524	0.00000000	902.97463649	0.00000%	0.51947%
R	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000%	0.00000%
						Libor	4.19375%

Page 1

		STRUCTURED ADJUSTABLE RATE MORTGAGE LOAN TRUST	Contact:
		Mortgage Pass-Through Certificates, Series 2005-19XS	Diana Kenneally
			Account Administrator
			617-603-6406
		STATEMENT TO CERTIFICATEHOLDERS	diana.kenneally@usbank.com
		Section 4.03 of the Trust Agreement, dated August 1, 2005
Distribution Date:	12/27/05

INTEREST
					Reduction from the Allocation of:
		Interest	Carryforward	Unpaid	Deferred	Net Prepayment		Interest
		Distribution	Interest	Basis Risk	Interest	Interest	Basis Risk	Remittance
	Class	Amount	Amount	Shortfall	Amount	Shortfalls	Shortfalls	Amount
	A1	$2,647,761.29	$0.00	$183,529.68	$0.00	$0.00	$0.00	$2,647,761.29
	A2A	$432,959.82	$0.00	$77,140.91	$0.00	$0.00	$0.00	$432,959.82
	A2B	$568,603.09	$0.00	$44,331.77	$0.00	$0.00	$0.00	$568,603.09
	A3	$428,518.03	$0.00	$38,851.55	$0.00	$0.00	$0.00	$428,518.03
	2A1	$1,336,994.05	$0.00	$0.00	$0.00	$0.00	$0.00	$1,336,994.05
	2A2	$483,354.34	$0.00	$0.00	$0.00	$0.00	$0.00	$483,354.34
	2A3	$176,536.36	$0.00	$0.00	$0.00	$0.00	$0.00	$176,536.36
	M1-I	$236,775.42	$0.00	$31,019.36	$0.00	$0.00	$0.00	$236,775.42
	M2-I	$125,717.82	$0.00	$22,947.16	$0.00	$0.00	$0.00	$125,717.82
	M3-I	$78,689.97	$0.00	$40,529.78	$0.00	$0.00	$7,079.08	$71,610.89
	M1-II	$208,414.72	$0.00	$0.00	$0.00	$0.00	$0.00	$208,414.72
	M2-II	$43,148.06	$0.00	$0.00	$0.00	$0.00	$0.00	$43,148.06
	M3-II	$36,807.53	$0.00	$0.00	$0.00	$0.00	$2,207.40	$34,600.13
	X-I*	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	X-II*	$725,677.83	$0.00	$0.00	$0.00	$0.00	$0.00	$725,677.83
	R	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
	Group 1	$4,519,025.44	$0.00	$438,350.21	$0.00	$0.00	$7,079.08	$4,511,946.36
	Group 2	$3,010,932.90	$0.00	$0.00	$0.00	$0.00	$2,207.40	$3,008,725.49
	Total	$7,529,958.33	$0.00	$438,350.21	$0.00	$0.00	$9,286.48	$7,520,671.85

BASIS RISK PAYMENTS		Non-REMIC2 Payments
	A1	$0.00
	A2A	$0.00
	A2B	$0.00
	A3	$0.00
	2A1	$0.00
	2A2	$0.00
	2A3	$0.00
	M1-I	$0.00
	M2-I	$0.00
	M3-I	$0.00
	M1-II	$0.00
	M2-II	$0.00
	M3-II	$2,207.40

OVERCOLLATERALIZATION		Group 1	Group 2
	Overcollateralization Amount (before distributions)	$7,513,660.28	$3,653,307.01
	Overcollateralization Release Amount	$0.00	$0.00
	Overcollateralization Deficiency (after distributions)	$274,422.25	$0.00
	Overcollateralization Target Amount	$8,592,773.81	$3,653,307.02
	Overcollateralization Amount (after distributions)	$8,318,351.57	$3,653,307.01

		Group 1	Group 2	Total
POOL	Beginning Scheduled Balance	$1,105,781,687.16	$565,470,132.57	$1,671,251,819.73
	Scheduled Principal	$17,312.57	$522.65	$17,835.22
	Principal Prepayments (includes curtailments)	$28,520,635.71	$15,662,347.51	$44,182,983.22
	Liquidation Proceeds	$0.01	$0.00	$0.01
	Insurance Proceeds	$0.00	$0.00	$0.00
	Substitute Loan Balance	$0.00	$0.00	$0.00
	Deleted Loan Balance	$0.00	$0.00	$0.00
	Principal Remittance	$28,537,948.29	$15,662,870.16	$44,200,818.45
	Principal Distribution Amount	$28,537,948.29	$15,662,870.16	$44,200,818.45

Scheduled Principal Balance of Mortgage Loans	$1,077,243,738.87	$549,807,262.41	$1,627,051,001.28
Number of Mortgage Loans	2,779	1,812	4,591

Current Realized Loss	$0.00	$0.00	$0.00
Aggregate Realized Losses	$0.00	$0.00	$0.00

Gross Interest	$5,700,852.65	$3,196,825.13	$8,897,677.78
Servicing Fee	$384,215.01	$188,099.63	$572,314.64
Interest Remittance Amount	$5,316,637.64	$3,008,725.50	$8,325,363.14

P&I ADVANCES
	Aggregate Advances required for the Collection Period	$4,145,255.07
	Aggregate Advances made for the Collection Period	$4,145,255.07
	Aggregate Advances not made for the Collection Period	$0.00

		Group1	Group1 Scheduled	Group2	Group2 Scheduled
DELINQUENCIES		Number	Principal Balance	Number	Principal Balance
	30-59 days delinquent*	8	$3,195,458.57	5	$1,850,091.55
	60-89 days delinquent*	5	$1,639,089.62	4	$1,526,360.93
	90 or more days delinquent*	0	$0.00	4	$1,372,232.54
	Foreclosures	0	$0.00	0	$0.00
	Bankruptcies	0	$0.00	1	$101,988.17
	REO	0	$0.00	0	$0.00
	* Excludes all Foreclosure, Bankruptcy, and REO loans

Page 1

		STRUCTURED ADJUSTABLE RATE MORTGAGE LOAN TRUST	Contact:
		Mortgage Pass-Through Certificates, Series 2005-19XS	Diana Kenneally
			Account Administrator
			617-603-6406
		STATEMENT TO CERTIFICATEHOLDERS	diana.kenneally@usbank.com
		Section 4.03 of the Trust Agreement, dated August 1, 2005
Distribution Date:	12/27/05

SUBSTITUTED LOAN INFORMATION

Loans that were (Deleted)/Substituted in the preceding calendar month

			Stated Principal				Stated Principal
		Loan Number	Balance			Loan Number	Balance





REO INFORMATION					Loans that became REO properties in preceding calendar month.

	Stated Principal		Stated Principal
Loan Number	Balance	Loan Number	Balance

Page 3

MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 2005-19XS 8-K