WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003

Class	Cusip	Orig Prin Bal	Begin Prin Bal	Int Rate Accrued	Int Rate Paid	Int Dist	Prin Dist	Int Shortfall	Prin Loss	Deferred Interest	Int Reimbursed	Unscheduled Int	Prin Reimbursed	Subsequent Recoveries	Total Dist	Ending Class Bal
IA1	939335MX0	$132,504,000.00	$22,933,572.14	3.8717031128%	3.8717031128%	$73,993.32	$393,109.31	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$467,102.63	$22,540,462.83
IIA1	939335MY8	$140,170,000.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
IIA2	939335MZ5	$43,990,000.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
IIA3	939335NA9	$109,179,850.00	$17,163,117.54	6.1500000000%	6.1500000000%	$87,960.98	$1,274,596.44	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$1,362,557.42	$15,888,521.10
IIIA1	939335NB7	$66,287,000.00	$3,709,722.47	6.6419434944%	6.6419434944%	$20,533.14	$249,308.15	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$269,841.29	$3,460,414.32
IIX	939335NC5	$293,339,850.00	$17,163,117.54	0.3951031037%	0.3951031037%	$5,651.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$5,651.00	$15,888,521.10
CB1	939335ND3	$6,057,000.00	$2,680,719.02	5.5349032936%	5.5349032936%	$12,364.60	$64,273.83	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$76,638.43	$2,616,445.19
CB2	939335NE1	$2,523,000.00	$1,116,634.32	5.5349032936%	5.5349032936%	$5,150.39	$26,772.80	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$31,923.19	$1,089,861.52
CB3	939335NF8	$1,767,000.00	$782,042.35	5.5349032936%	5.5349032936%	$3,607.11	$18,750.51	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$22,357.62	$763,291.84
CB4	939335NR2	$1,262,000.00	$558,538.46	5.5349032936%	5.5349032936%	$2,576.21	$13,391.71	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$15,967.92	$545,146.75
CB5	939335NT8	$505,000.00	$223,503.89	5.5349032936%	5.5349032936%	$1,030.89	$5,358.80	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$6,389.70	$218,145.09
CB6	939335NV3	$505,517.00	$223,732.90	5.5349032936%	5.5349032936%	$1,031.95	$5,364.28	$0.00	$0.01	$0.00	$0.00	$0.00	$0.00	$0.00	$6,396.23	$218,368.61
R1	939335NG6	$50.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R2	939335NH4	$50.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R3	939335NJ0	$50.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R_SYN	XXXXXXXXX	$0.00	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Total		$504,750,517.00	$49,391,583.09			$213,899.59	$2,050,925.83	$0.00	$0.01	$0.00	$0.00	$0.00	$0.00	$0.00	$2,264,825.42	$47,340,657.25

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003

Class	Orig Face	Beg Bal	Prin Loss	Prin Reimbursed	Subsequent Recoveries	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
IA1	$132,504,000.00	$22,933,572.14	$0.00	$0.00	$0.00	$0.00	$393,109.31	0.1701115652	$22,540,462.83
IIA1	$140,170,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
IIA2	$43,990,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
IIA3	$109,179,850.00	$17,163,117.54	$0.00	$0.00	$0.00	$0.00	$1,274,596.44	0.1455261305	$15,888,521.10
IIIA1	$66,287,000.00	$3,709,722.47	$0.00	$0.00	$0.00	$0.00	$249,308.15	0.0522035138	$3,460,414.32
IIX	$293,339,850.00	$17,163,117.54	$0.00	$0.00	$0.00	$0.00	$0.00	0.0541642095	$15,888,521.10
CB1	$6,057,000.00	$2,680,719.02	$0.00	$0.00	$0.00	$0.00	$64,273.83	0.4319704788	$2,616,445.19
CB2	$2,523,000.00	$1,116,634.32	$0.00	$0.00	$0.00	$0.00	$26,772.80	0.4319704796	$1,089,861.52
CB3	$1,767,000.00	$782,042.35	$0.00	$0.00	$0.00	$0.00	$18,750.51	0.4319704810	$763,291.84
CB4	$1,262,000.00	$558,538.46	$0.00	$0.00	$0.00	$0.00	$13,391.71	0.4319704834	$545,146.75
CB5	$505,000.00	$223,503.89	$0.00	$0.00	$0.00	$0.00	$5,358.80	0.4319704752	$218,145.09
CB6	$505,517.00	$223,732.90	$0.01	$0.00	$0.00	$0.00	$5,364.28	0.4319708536	$218,368.61
R1	$50.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
R2	$50.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
R3	$50.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
R_SYN	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	0.0000000000	$0.00
Total	$504,750,517.00	$49,391,583.09	$0.01	$0.00	$0.00	$0.00	$2,050,925.83	0.0937902105	$47,340,657.25

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003
PER $1000 DENOMINATION
Class	Orig Face	Beg Bal	Prin Loss	Prin Reimbursed	Subsequent Recoveries	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
IA1	$132,504,000.00	173.07833831	0.00000000	0.00000000	0.00000000	0.00000000	2.96677315	0.1701115652	170.11156516
IIA1	$140,170,000.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
IIA2	$43,990,000.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
IIA3	$109,179,850.00	157.20041326	0.00000000	0.00000000	0.00000000	0.00000000	11.67428275	0.1455261305	145.52613051
IIIA1	$66,287,000.00	55.96455519	0.00000000	0.00000000	0.00000000	0.00000000	3.76104138	0.0522035138	52.20351381
IIX	$293,339,850.00	58.50932814	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0541642095	54.16420953
CB1	$6,057,000.00	442.58197457	0.00000000	0.00000000	0.00000000	0.00000000	10.61149579	0.4319704788	431.97047878
CB2	$2,523,000.00	442.58197384	0.00000000	0.00000000	0.00000000	0.00000000	10.61149425	0.4319704796	431.97047959
CB3	$1,767,000.00	442.58197510	0.00000000	0.00000000	0.00000000	0.00000000	10.61149406	0.4319704810	431.97048104
CB4	$1,262,000.00	442.58198098	0.00000000	0.00000000	0.00000000	0.00000000	10.61149762	0.4319704834	431.97048336
CB5	$505,000.00	442.58196040	0.00000000	0.00000000	0.00000000	0.00000000	10.61148515	0.4319704752	431.97047525
CB6	$505,517.00	442.58234639	0.00001978	0.00000000	0.00000000	0.00000000	10.61147301	0.4319708536	431.97085360
R1	$50.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
R2	$50.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
R3	$50.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000
R_SYN	$0.00	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.0000000000	0.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003

Class	Orig Face	Int Rate Accrued	Int Rate Paid	Beg Cert Prin/Not Bal	Curent Int Accrued	Int Shortfall	Unscheduled Int	Int Reimbursed	Total Int Dist
IA1	$132,504,000.00	3.8717031128%	3.8717031128%	$22,933,572.14	$73,993.32	$0.00	$0.00	$0.00	$73,993.32
IIA1	$140,170,000.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
IIA2	$43,990,000.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
IIA3	$109,179,850.00	6.1500000000%	6.1500000000%	$17,163,117.54	$87,960.98	$0.00	$0.00	$0.00	$87,960.98
IIIA1	$66,287,000.00	6.6419434944%	6.6419434944%	$3,709,722.47	$20,533.14	$0.00	$0.00	$0.00	$20,533.14
IIX	$293,339,850.00	0.3951031037%	0.3951031037%	$17,163,117.54	$5,651.00	$0.00	$0.00	$0.00	$5,651.00
CB1	$6,057,000.00	5.5349032936%	5.5349032936%	$2,680,719.02	$12,364.60	$0.00	$0.00	$0.00	$12,364.60
CB2	$2,523,000.00	5.5349032936%	5.5349032936%	$1,116,634.32	$5,150.39	$0.00	$0.00	$0.00	$5,150.39
CB3	$1,767,000.00	5.5349032936%	5.5349032936%	$782,042.35	$3,607.11	$0.00	$0.00	$0.00	$3,607.11
CB4	$1,262,000.00	5.5349032936%	5.5349032936%	$558,538.46	$2,576.21	$0.00	$0.00	$0.00	$2,576.21
CB5	$505,000.00	5.5349032936%	5.5349032936%	$223,503.89	$1,030.89	$0.00	$0.00	$0.00	$1,030.89
CB6	$505,517.00	5.5349032936%	5.5349032936%	$223,732.90	$1,031.95	$0.00	$0.00	$0.00	$1,031.95
R1	$50.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R2	$50.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R3	$50.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
R_SYN	$0.00	0.0000000000%	0.0000000000%	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Total	$504,750,517.00			$49,391,583.09	$213,899.59	$0.00	$0.00	$0.00	$213,899.59

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003
PER $1000 DENOMINATION
Class	Orig Face	Int Rate Accrued	Int Rate Paid	Beg Cert Prin/Not Bal	Curent Int Accrued	Int Shortfall	Unscheduled Int	Int Reimbursed	Total Int Dist
IA1	$132,504,000.00	3.8717031128%	3.8717031128%	173.07833831	0.55842329	0.00000000	0.00000000	0.00000000	0.55842329
IIA1	$140,170,000.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
IIA2	$43,990,000.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
IIA3	$109,179,850.00	6.1500000000%	6.1500000000%	157.20041326	0.80565214	0.00000000	0.00000000	0.00000000	0.80565214
IIIA1	$66,287,000.00	6.6419434944%	6.6419434944%	55.96455519	0.30976119	0.00000000	0.00000000	0.00000000	0.30976119
IIX	$293,339,850.00	0.3951031037%	0.3951031037%	58.50932814	0.01926434	0.00000000	0.00000000	0.00000000	0.01926434
CB1	$6,057,000.00	5.5349032936%	5.5349032936%	442.58197457	2.04137362	0.00000000	0.00000000	0.00000000	2.04137362
CB2	$2,523,000.00	5.5349032936%	5.5349032936%	442.58197384	2.04137535	0.00000000	0.00000000	0.00000000	2.04137535
CB3	$1,767,000.00	5.5349032936%	5.5349032936%	442.58197510	2.04137521	0.00000000	0.00000000	0.00000000	2.04137521
CB4	$1,262,000.00	5.5349032936%	5.5349032936%	442.58198098	2.04137084	0.00000000	0.00000000	0.00000000	2.04137084
CB5	$505,000.00	5.5349032936%	5.5349032936%	442.58196040	2.04136634	0.00000000	0.00000000	0.00000000	2.04136634
CB6	$505,517.00	5.5349032936%	5.5349032936%	442.58234639	2.04137546	0.00000000	0.00000000	0.00000000	2.04137546
R1	$50.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
R2	$50.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
R3	$50.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
R_SYN	$0.00	0.0000000000%	0.0000000000%	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WMMSC 019
WEIGHTED AVERAGE PC RATE: 5.19683%
WEIGHTED AVERAGE MATURITY: 278.44577
WEIGHTED AVERAGE LOAN AGE: 72.96954
POOL NUMBER: Group 1(1753,1754,1755)
ISSUE DATE: 07/30/2001
CERTIFICATE BALANCE AT ISSUE: $504,750,516.00
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	142		$49,391,583.10
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$98,080.65
Unscheduled Principal Collection/Reversals		$30,779.29
Liquidations-in-full	5	$1,922,065.91
Subsequent Recoveries		$0.00
Net principal Distributed		$2,050,925.85	-$2,050,925.85

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	137		$47,340,657.25

SCHEDULED INTEREST AT MORTGAGE RATE:		$226,357.68

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$12,458.11

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$2,264,825.42

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WMMSC 019
WEIGHTED AVERAGE PC RATE: 3.87170%
WEIGHTED AVERAGE MATURITY: 274.91712
WEIGHTED AVERAGE LOAN AGE: 80.02265
POOL NUMBER: 1753
ISSUE DATE: 07/30/2001
CERTIFICATE BALANCE AT ISSUE: $135,902,103.00
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	77		$25,065,876.88
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$53,507.05
Unscheduled Principal Collection/Reversals		$7,924.91
Liquidations-in-full	1	$349,140.65
Subsequent Recoveries		$0.00
Net principal Distributed		$410,572.61	-$410,572.61

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	76		$24,655,304.27

SCHEDULED INTEREST AT MORTGAGE RATE:		$87,249.67

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$6,376.67

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$491,445.61

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WMMSC 019
WEIGHTED AVERAGE PC RATE: 6.54510%
WEIGHTED AVERAGE MATURITY: 279.79690
WEIGHTED AVERAGE LOAN AGE: 66.09231
POOL NUMBER: 1754
ISSUE DATE: 07/30/2001
CERTIFICATE BALANCE AT ISSUE: $300,861,552.00
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	52		$20,013,292.67
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$38,990.40
Unscheduled Principal Collection/Reversals		$22,854.37
Liquidations-in-full	3	$1,310,470.17
Subsequent Recoveries		$0.00
Net principal Distributed		$1,372,314.94	-$1,372,314.94

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	49		$18,640,977.73

SCHEDULED INTEREST AT MORTGAGE RATE:		$114,160.89

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$5,003.33

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$1,481,472.50

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WMMSC 019
WEIGHTED AVERAGE PC RATE: 6.64194%
WEIGHTED AVERAGE MATURITY: 293.72964
WEIGHTED AVERAGE LOAN AGE: 61.67028
POOL NUMBER: 1755
ISSUE DATE: 07/30/2001
CERTIFICATE BALANCE AT ISSUE: $67,986,861.00
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	13		$4,312,413.55
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$5,583.20
Unscheduled Principal Collection/Reversals		$0.01
Liquidations-in-full	1	$262,455.09
Subsequent Recoveries		$0.00
Net principal Distributed		$268,038.30	-$268,038.30

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	12		$4,044,375.25

SCHEDULED INTEREST AT MORTGAGE RATE:		$24,947.12

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$1,078.11

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$291,907.31

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: WMMSC 019
WEIGHTED AVERAGE PC RATE: 5.19683%
WEIGHTED AVERAGE MATURITY: 278.44577
WEIGHTED AVERAGE LOAN AGE: 72.96954
POOL NUMBER: ALL
ISSUE DATE: 07/30/2001
CERTIFICATE BALANCE AT ISSUE: $504,750,516.00
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	142		$49,391,583.10
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$98,080.65
Unscheduled Principal Collection/Reversals		$30,779.29
Liquidations-in-full	5	$1,922,065.91
Subsequent Recoveries		$0.00
Net principal Distributed		$2,050,925.85	-$2,050,925.85

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	137		$47,340,657.25

SCHEDULED INTEREST AT MORTGAGE RATE:		$226,357.68

UNSCHEDULED INTEREST AT MORTGAGE RATE:
Unscheduled Interest Collection/Reversals		$0.00
Interest Uncollected on Liquidation		$0.00
Interest Uncollected on Non-Earning Assets		$0.00
Net Unscheduled Interest Distributed		$0.00

OTHER:
Loan Conversion Fees		$0.00
Expense Reimbursements		$0.00
Gain on Liquidations		$0.00
Hazard Insurance Premium Refunds		$0.00
Recoveries Carried Forward		$0.00
Net Other Distributions		$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$12,458.11

UNSCHEDULED SERVICING FEES:
Unscheduled Service Fee Collections/Reversals		$0.00
Servicing Fees Uncollected on Liquidation		$0.00
Servicing Fees Uncollected/Non-Earning Assets		$0.00
Net Unscheduled Service Fees Distributed		$0.00

MISCELLANEOUS EXPENSES:		$0.00

NET FUNDS DISTRIBUTED:		$2,264,825.42

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003

Distribution by Group
Pool ID		Principal		Interest		Total
Group 1(1753,1754,1755)		$2,050,925.85		$213,899.57		$2,264,825.42
Pool - 1753		$410,572.61		$80,873.00		$491,445.61
Pool - 1754		$1,372,314.94		$109,157.56		$1,481,472.50
Pool - 1755		$268,038.30		$23,869.01		$291,907.31
Aggregate		$2,050,925.85		$213,899.57		$2,264,825.42

Number of Loans and Aggregate Principal Balance By Group
Pool ID	Beg Bal	Beg Count	Paid Off / Liq Count	Rem Count	Sched Prin End Bal	Sched Prin	Prin PrePay / Liq	Unsched Prin / Rev	Total Prin
Group 1(1753,1754,1755)	$49,391,583.10	142	5	137	$47,340,657.25	$98,080.65	$1,922,065.91	$30,779.29	$2,050,925.85
Pool - 1753	$25,065,876.88	77	1	76	$24,655,304.27	$53,507.05	$349,140.65	$7,924.91	$410,572.61
Pool - 1754	$20,013,292.67	52	3	49	$18,640,977.73	$38,990.40	$1,310,470.17	$22,854.37	$1,372,314.94
Pool - 1755	$4,312,413.55	13	1	12	$4,044,375.25	$5,583.20	$262,455.09	$0.01	$268,038.30
Aggregate	$49,391,583.10	142	5	137	$47,340,657.25	$98,080.65	$1,922,065.91	$30,779.29	$2,050,925.85

Delinquency Information by Group
Pool ID	1 Month Count	Sched End Balance	2 Months Count	Sched End Balance	3 Months Count	Sched End Balance	4 Months Count	Sched End Balance
Group 1(1753,1754,1755)	1	$542,884.81	2	$658,645.54	1	$273,179.10	0	$0.00
Pool - 1753	0	$0.00	0	$0.00	1	$273,179.10	0	$0.00
Pool - 1754	1	$542,884.81	0	$0.00	0	$0.00	0	$0.00
Pool - 1755	0	$0.00	2	$658,645.54	0	$0.00	0	$0.00
Aggregate	1	$542,884.81	2	$658,645.54	1	$273,179.10	0	$0.00

Foreclosure and REO Information by Group
Pool ID		Foreclosure Count		Sched End Balance		REO Count		Sched End Balance
Group 1(1753,1754,1755)		0		$0.00		0		$0.00
Pool - 1753		0		$0.00		0		$0.00
Pool - 1754		0		$0.00		0		$0.00
Pool - 1755		0		$0.00		0		$0.00
Aggregate		0		$0.00		0		$0.00

Aggregate Loss Amounts by Group
Pool ID			Count			Loss Amount
Group 1(1753,1754,1755)			0			$0.00
Aggregate			0			$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003

INSURANCE RESERVES - Group 1(1753,1754,1755)
Insurance Type	Original Balance	Claims In Progress	Claims Paid	Coverage Adjustments	Coverage Remaining
MPI	$0.00	$0.00	$0.00	$0.00	$0.00
Special Hazard	$5,497,801.00	$0.00	$0.00	$0.00	$5,497,801.00
Bankruptcy Bond
Single-Units	$100,000.00	$0.00	$0.00	$0.00	$100,000.00
Multi-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Mortgage Repurchase	$5,047,505.00	$0.00	$0.00	$0.00	$5,047,505.00

INSURANCE RESERVES - Aggregate
Insurance Type	Original Balance	Claims In Progress	Claims Paid	Coverage Adjustments	Coverage Remaining
MPI	$0.00	$0.00	$0.00	$0.00	$0.00
Special Hazard	$5,497,801.00	$0.00	$0.00	$0.00	$5,497,801.00
Bankruptcy Bond
Single-Units	$100,000.00	$0.00	$0.00	$0.00	$100,000.00
Multi-Units	$0.00	$0.00	$0.00	$0.00	$0.00
Mortgage Repurchase	$5,047,505.00	$0.00	$0.00	$0.00	$5,047,505.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003

The Class Principal Balances of each Class of the Class CB1,CB2,CB3,CB4,CB5,CB6 Certificatesimmediately after the principal and interest distribution on 200312 are as follows:

Class			Class Principal Balance
CB1			$2,616,445.19
CB2			$1,089,861.52
CB3			$763,291.84
CB4			$545,146.75
CB5			$218,145.09
CB6			$218,368.61
Total			$5,451,259.00
Capitalized items used but not defined herein have the meanings ascribed to them in the Prospectus Supplement.

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMMSC.019
Distribution Date: 12/26/2003

Aggregate ARM Information by Group
Pool ID	Netwac	Margin
Group 1(1753,1754,1755)	5.19683%	2.45510%
Pool - 1753	3.87170%	2.45979%
Pool - 1754	6.54510%	2.45000%
Pool - 1755	6.64194%	2.45000%
Aggregate	5.19683%	2.45490%

MORTGAGE PASS- THROUGH CERTIFICATES SERIES 2001-9 8-K