8-K 1 jpmc2004s1_dec04.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 27, 2004 ------------------------------- J.P. MORGAN ACCEPTANCE CORPORATION I (as Depositor under the Pooling and Servicing Agreement, dated as of August 1, 2004 providing for the issuance of J.P. Morgan Mortgage Trust 2004-S1 Mortgage Pass-Through Certificates) J.P. MORGAN ACCEPTANCE CORPORATION I -------------------------------------------------------------------------------- (Exact name of registrant as specified in its charter) Delaware 333-109775-07 13-3475488 -------------------------------------------------------------------------------- (State or other jurisdiction (Commission (IRS Employer of incorporation) File Number) Identification No.) 60 Wall Street New York, New York 10260 -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (212) 648-7741 ------------------------------ N/A ------------------------------------------------------------------------------ (Former name or former address, if changed since last report.) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act (17 CFR 240.14a-12(b)) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Item 8.01 Other Events. This current report on Form 8-K relates to the monthly distribution reported to the holders of J.P. Morgan Mortgage Trust 2004-S1 Mortgage Pass-Through Certificates pursuant to the terms of the Pooling and Servicing Agreement, dated as of August 1, 2004, among J.P. Morgan Acceptance Corporation I, a Delaware corporation, as depositor, Wachovia Bank, National Association, a national banking association, as trustee, Chase Manhattan Mortgage Corporation, as master servicer, JPMorgan Chase Bank, as securities administrator, and acknowledged by J.P. Morgan Mortgage Acquisition Corp., a Delaware corporation, as seller. On December 27, 2004 distributions were made to the certificateholders. Specific information with respect to these distributions is filed as Exhibit 99.1. Item 9.01 Financial Statements and Exhibits. (a) Not applicable (b) Not applicable (c) The following exhibit is filed as part of this report: Statement to Certificateholders on December 27, 2004, as Exhibit 99.1. J.P. Morgan Mortgage Trust 2004-S1 Mortgage Pass-Through Certificates ------------------------------------------------------------------------ SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: December 31, 2004 JPMORGAN CHASE BANK,N.A. By: /s/ Diane E. Wallace --------------------------------------- Name: Diane E. Wallace Title: Vice President INDEX TO EXHIBITS Exhibit Number Description of Exhibits 99.1 Statement to Certificateholders on December 27, 2004 Exhibit 99.1 Monthly Certificateholder Statement on December 27, 2004 J.P. Morgan Mortgage Trust 2004-S1 Mortgage Pass-Through Certificates Statement to Certificateholders December 27, 2004 ----------------------------------------------------------------------------------------------------------------------------------- DISTRIBUTION IN DOLLARS ----------------------------------------------------------------------------------------------------------------------------------- Original Beginning Ending Face Principal Realized Deferred Principal Class Value Balance Principal Interest Total Losses Interest Balance ----------------------------------------------------------------------------------------------------------------------------------- IA1 23,000,000.00 22,571,947.14 194,946.81 84,644.80 279,591.61 0.00 0.00 22,377,000.33 IA2 5,535,500.00 5,535,500.00 0.00 20,758.13 20,758.13 0.00 0.00 5,535,500.00 IA3 49,460,200.00 48,329,199.27 515,088.21 181,234.50 696,322.71 0.00 0.00 47,814,111.06 IA4 54,807,200.00 54,807,200.00 0.00 205,527.00 205,527.00 0.00 0.00 54,807,200.00 IA5 40,000,000.00 38,741,027.04 573,370.22 145,278.85 718,649.07 0.00 0.00 38,167,656.82 IA6 15,056,600.00 15,056,600.00 0.00 56,462.25 56,462.25 0.00 0.00 15,056,600.00 IA7 255,756,000.00 250,713,588.90 3,988,337.07 1,044,639.95 5,032,977.02 0.00 0.00 246,725,251.83 IA8 18,461,700.00 17,714,647.90 917,251.54 38,529.36 955,780.90 0.00 0.00 16,797,396.36 IAP 246,572.00 243,723.56 1,027.53 0.00 1,027.53 0.00 0.00 242,696.03 AR 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 IIA1 107,027,200.00 102,479,267.40 2,588,799.77 512,396.34 3,101,196.11 0.00 0.00 99,890,467.63 IIAP 878,191.00 869,445.33 4,810.99 0.00 4,810.99 0.00 0.00 864,634.34 IIIA1 23,458,700.00 22,355,405.60 414,158.78 102,462.28 516,621.06 0.00 0.00 21,941,246.82 IIIAP 509,310.00 503,030.65 2,099.81 0.00 2,099.81 0.00 0.00 500,930.84 IVA1 33,634,800.00 30,459,730.28 143,027.05 152,298.65 295,325.70 0.00 0.00 30,316,703.23 IVAP 326,057.00 324,983.31 344.31 0.00 344.31 0.00 0.00 324,639.00 IB1 2,344,800.00 2,317,828.16 9,084.91 9,419.11 18,504.02 0.00 0.00 2,308,743.25 IB2 1,641,100.00 1,622,222.70 6,358.43 6,592.33 12,950.76 0.00 0.00 1,615,864.27 IB3 1,172,300.00 1,158,815.23 4,542.07 4,709.15 9,251.22 0.00 0.00 1,154,273.16 IB4 422,000.00 417,145.80 1,635.03 1,695.18 3,330.21 0.00 0.00 415,510.77 IB5 281,300.00 278,064.26 1,089.89 1,129.99 2,219.88 0.00 0.00 276,974.37 IB6 703,373.60 695,282.89 2,725.19 2,825.47 5,550.66 0.00 0.00 692,557.70 CB1 3,927,800.00 3,912,160.03 5,306.00 19,326.84 24,632.84 0.00 0.00 3,906,854.03 CB2 1,658,300.00 1,651,696.87 2,240.17 8,159.71 10,399.88 0.00 0.00 1,649,456.70 CB3 1,047,400.00 1,043,229.39 1,414.91 5,153.76 6,568.67 0.00 0.00 1,041,814.48 CB4 611,000.00 608,567.08 825.39 3,006.44 3,831.83 0.00 0.00 607,741.69 CB5 436,400.00 434,662.31 589.53 2,147.32 2,736.85 0.00 0.00 434,072.78 CB6 1,047,418.21 1,043,247.61 1,414.89 5,153.85 6,568.74 0.00 0.00 1,041,832.72 TOTALS 643,451,321.81 625,888,218.71 9,380,488.50 2,613,551.26 11,994,039.76 0.00 0.00 616,507,730.21 IA9 18,461,700.00 17,714,647.90 0.00 64,806.09 64,806.09 0.00 0.00 16,797,396.36 IIAX 5,936,193.45 5,572,276.22 0.00 27,861.38 27,861.38 0.00 0.00 5,439,336.27 IIIAX 855,643.39 805,328.40 0.00 3,691.09 3,691.09 0.00 0.00 776,994.00 IVAX 2,256,106.80 1,893,062.90 0.00 9,465.31 9,465.31 0.00 0.00 1,886,521.61 ------------------------------------------------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------------- FACTOR INFORMATION PER $1,000 OF ORIGINAL FACE ----------------------------------------------------------------------------------------------------------------------------------- Current Beginning Ending Class Pass-thru Class CUSIP Principal Principal Interest Total Principal Rate (%) ----------------------------------------------------------------------------------------------------------------------------------- IA1 466247EK5 981.38900609 8.47594826 3.68020870 12.15615696 972.91305783 IA1 4.500000 % IA2 466247EL3 1,000.00000000 0.00000000 3.75000090 3.75000090 1,000.00000000 IA2 4.500000 % IA3 466247EM1 977.13311450 10.41419586 3.66424923 14.07844509 966.71891865 IA3 4.500000 % IA4 466247EN9 1,000.00000000 0.00000000 3.75000000 3.75000000 1,000.00000000 IA4 4.500000 % IA5 466247EP4 968.52567600 14.33425550 3.63197125 17.96622675 954.19142050 IA5 4.500000 % IA6 466247EQ2 1,000.00000000 0.00000000 3.75000000 3.75000000 1,000.00000000 IA6 4.500000 % IA7 466247ER0 980.28429010 15.59430500 4.08451786 19.67882286 964.68998510 IA7 5.000000 % IA8 466247ES8 959.53503199 49.68402368 2.08698874 51.77101242 909.85100830 IA8 2.610000 % IAP 466247EU3 988.44783674 4.16726149 0.00000000 4.16726149 984.28057525 IAP 0.000000 % AR 466247FE8 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 AR 5.000000 % IIA1 466247EV1 957.50675903 24.18824159 4.78753382 28.97577541 933.31851744 IIA1 6.000000 % IIAP 466247EW9 990.04126665 5.47829572 0.00000000 5.47829572 984.56297093 IIAP 0.000000 % IIIA1 466247EY5 952.96864703 17.65480525 4.36777315 22.02257840 935.31384177 IIIA1 5.500000 % IIIAP 466247EZ2 987.67086843 4.12285249 0.00000000 4.12285249 983.54801594 IIIAP 0.000000 % IVA1 466247FB4 905.60164710 4.25235322 4.52800819 8.78036141 901.34929389 IVA1 6.000000 % IVAP 466247FC2 996.70704815 1.05598101 0.00000000 1.05598101 995.65106714 IVAP 0.000000 % IB1 466247FF5 988.49716820 3.87449249 4.01702064 7.89151314 984.62267571 IB1 4.876516 % IB2 466247FG3 988.49716653 3.87449272 4.01701907 7.89151179 984.62267382 IB2 4.876516 % IB3 466247FH1 988.49716796 3.87449458 4.01701783 7.89151241 984.62267338 IB3 4.876516 % IB4 466247FM0 988.49715640 3.87447867 4.01701422 7.89149289 984.62267773 IB4 4.876516 % IB5 466247FN8 988.49719161 3.87447565 4.01702808 7.89150373 984.62271596 IB5 4.876516 % IB6 466247FP3 988.49727940 3.87445591 4.01702594 7.89148185 984.62282349 IB6 4.876516 % CB1 466247FJ7 996.01813483 1.35088345 4.92052549 6.27140893 994.66725139 CB1 5.928235 % CB2 466247FK4 996.01813303 1.35088343 4.92052705 6.27141048 994.66724959 CB2 5.928235 % CB3 466247FL2 996.01813061 1.35087837 4.92052702 6.27140538 994.66725224 CB3 5.928235 % CB4 466247FQ1 996.01813421 1.35088380 4.92052373 6.27140753 994.66725041 CB4 5.928235 % CB5 466247FR9 996.01812557 1.35089368 4.92053162 6.27142530 994.66723190 CB5 5.928235 % CB6 466247FS7 996.01820938 1.35083579 4.92052740 6.27136318 994.66737360 CB6 5.928235 % TOTALS 972.70484572 14.57839650 4.06176998 18.64016648 958.12644922 IA9 466247ET6 959.53503199 0.00000000 3.51029916 3.51029916 909.85100830 IA9 4.390000 % IIAX 466247EX7 938.69518690 0.00000000 4.69347575 4.69347575 916.30037259 IIAX 6.000000 % IIIAX 466247FA6 941.19630843 0.00000000 4.31381817 4.31381817 908.08157824 IIIAX 5.500000 % IVAX 466247FD0 839.08390330 0.00000000 4.19541752 4.19541752 836.18453258 IVAX 6.000000 % ----------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------ If there are any questions or problems with this statement, please contact the Administrator listed below: Pei Y Huang JPMorgan Chase Bank, N.A. - Structured Finance Services 4 New York Plaza, 6th Floor, New York, New York 10004 Tel: (212) 623-4495 Fax: (212) 623-5930 Email: pei.yan.huang@jpmorgan.com COLLATERAL GROUP ONE Weighted Average Coupon Rate 5.121597 % Beginning Weighted Average Net Rate (Pass Through Rate) 4.871640 % Beginning Loan Count 851 Ending Loan Count 843 Beginning Scheduled Balance 460,202,793.61 Ending Scheduled Balance 453,987,336.69 Scheduled Principal 1,803,947.78 Unscheduled Principal 4,411,509.14 Group One CPR 10.956406 % Net Liquidation Proceeds 0.00 Insurance Proceeds 0.00 Advances 0.00 Scheduled Interest 1,964,144.21 Servicing Fee 95,875.58 Sub Servicing Fee 16.49 Net Interest 1,868,268.63 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Cumulative Loss as a Percentage of Original Collateral 0.000000 % Bankruptcy Loss 0.00 Fraud Loss 0.00 Special Hazard Loss 0.00 Relief Act Interest Shortfall 0.00 Prepayment Interest Shortfall 0.00 COLLATERAL GROUP ONE SUBGROUP ONE Subgroup One Weighted Average Coupon Rate 4.891433 % Subgroup One Beginning Weighted Average Net Rate (Pass Through Rate) 4.641328 % Subgroup One Ending Weighted Average Net Rate (Pass Through Rate) 4.641140 % Sub-Group One Beginning Scheduled Balance 187,924,915.31 Sub-Group One Ending Scheduled Balance 186,629,977.11 Sub-Group One Senior Percentage 98.5935 % Sub-Group One Subordinate Percentage 1.4065 % Sub-Group One Senior Prepayment Percentage 100.0000 % Sub-Group One Subordinate Prepayment Percentage 0.0000 % Sub-Group One Non PO Scheduled Principal 746,924.82 Sub-Group One PO Scheduled Principal 987.88 Sub-Group One Non PO Unscheduled Principal 546,985.85 Sub-Group One PO Unscheduled Principal 39.65 Sub-Group One CPR 3.4512 % Sub-Group One Net Liquidation Proceeds 0.00 Sub-Group One Insurance Proceeds 0.00 Sub-Group One Advances 0.00 Sub-Group One Scheduled Interest 766,018.52 Sub-Group One Servicing Fee 39,151.02 Sub-Group One Sub Servicing Fee 16.49 Sub-Group One Net Interest 726,851.01 Sub-Group One Realized Loss Amount 0.00 Sub-Group One Cumulative Realized Loss 0.00 Sub-Group One Cumulative Loss as a Percentage of Original Collateral Sub-Group One 0.000000 % Sub-Group One Bankruptcy Loss 0.00 Sub-Group One Fraud Loss 0.00 Sub-Group One Special Hazard Loss 0.00 Sub-Group One Relief Act Interest Shortfall 0.00 Sub-Group One Prepayment Interest Shortfall 0.00 COLLATERAL GROUP ONE SUBGROUP TWO Subgroup Two Weighted Average Coupon Rate 5.251178 % Subgroup Two Beginning Weighted Average Net Rate (Pass Through Rate) 70.759186 % Subgroup Two Ending Weighted Average Net Rate (Pass Through Rate) 4.996842 % Sub-Group Two Beginning Scheduled Balance 254,303,965.43 Sub-Group Two Ending Scheduled Balance 250,301,666.27 Sub-Group Two Senior Percentage 98.5882 % Sub-Group Two Subordinate Percentage 1.4118 % Sub-Group Two Senior Prepayment Percentage 100.0000 % Sub-Group Two Subordinate Prepayment Percentage 0.0000 % Sub-Group Two Scheduled Principal 988,925.47 Sub-Group Two Unscheduled Principal 3,013,373.69 Sub-Group Two CPR 13.3770 % Sub-Group Two Net Liquidation Proceeds 0.00 Sub-Group Two Insurance Proceeds 0.00 Sub-Group Two Advances 0.00 Sub-Group Two Scheduled Interest 1,112,829.53 Sub-Group Two Net Interest 1,059,849.54 Sub-Group Two Servicing Fee 52,979.99 Sub-Group Two Realized Loss Amount 0.00 Sub-Group Two Cumulative Realized Loss 0.00 Sub-Group Two Cumulative Loss as a Percentage of Original Collateral Sub-Group Two 0.000000 % Sub-Group Two Bankruptcy Loss 0.00 Sub-Group Two Fraud Loss 0.00 Sub-Group Two Special Hazard Loss 0.00 Sub-Group Two Prepayment Interest Shortfall 0.00 Sub-Group Two Relief Act Interest Shortfall 0.00 COLLATERAL GROUP ONE SUBGROUP THREE Subgroup Three Weighted Average Coupon Rate 5.694664 % Subgroup Three Beginning Weighted Average Net Rate (Pass Through Rate) 5.444664 % Subgroup Three Ending Weighted Average Net Rate (Pass Through Rate) 5.437911 % Sub-Group Three Beginning Scheduled Balance 17,973,912.87 Sub-Group Three Ending Scheduled Balance 17,055,693.31 Sub-Group Three Senior Percentage 98.5575 % Sub-Group Three Subordinate Percentage 1.4425 % Sub-Group Three Senior Prepayment Percentage 100.0000 % Sub-Group Three Subordinate Prepayment Percentage 0.0000 % Sub-Group Three Scheduled Principal 67,109.61 Sub-Group Three Unscheduled Principal 918,219.56 Sub-Group Three CPR 46.8297 % Sub-Group Three Net Liquidation Proceeds 0.00 Sub-Group Three Insurance Proceeds 0.00 Sub-Group Three Advances 0.00 Sub-Group Three Scheduled Interest 85,296.16 Sub-Group Three Servicing Fee 3,744.57 Sub-Group Three Net Interest 81,551.59 Sub-Group Three Realized Loss Amount 0.00 Sub-Group Three Cumulative Realized Loss 0.00 Sub-Group Three Cumulative Loss as a Percentage of Original Collateral Sub-Group Three 0.000000 % Sub-Group Three Bankruptcy Loss 0.00 Sub-Group Three Fraud Loss 0.00 Sub-Group Three Special Hazard Loss 0.00 Sub-Group Three Relief Act Interest Shortfall 0.00 Sub-Group Three Prepayment Interest Shortfall 0.00 COLLATERAL GROUP TWO Weighted Average Coupon Rate 6.508843 % Beginning Weighted Average Net Rate (Pass Through Rate) 6.258843 % Ending Weighted Average Net Rate (Pass Through Rate) 6.257941 % Weighted Average Maturity 351 Beginning Loan Count 724 Ending Loan Count 710 Beginning Scheduled Balance 109,011,915.63 Ending Scheduled Balance 106,412,784.68 Group Two Senior Percentage 94.7632 % Group Two Subordinate Percentage 5.2368 % Group Two Senior Prepayment Percentage 100.0000 % Group Two Subordinate Prepayment Percentage 0.0000 % Scheduled Principal 106,357.17 Unscheduled Principal 2,492,773.78 Group Two CPR 24.2600 % Net Liquidation Proceeds 0.00 Insurance Proceeds 0.00 Advances 0.00 Scheduled Interest 591,284.52 Servicing Fee 22,710.81 Net Interest 568,573.71 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Cumulative Loss as a Percentage of Original Collateral 0.000000 % Bankruptcy Loss 0.00 Fraud Loss 0.00 Special Hazard Loss 0.00 Relief Act Interest Shortfall 0.00 Prepayment Interest Shortfall 0.00 COLLATERAL GROUP THREE Weighted Average Coupon Rate 5.818969 % Beginning Weighted Average Net Rate (Pass Through Rate) 5.568969 % Ending Weighted Average Net Rate (Pass Through Rate) 5.564105 % Weighted Average Maturity 172 Beginning Loan Count 165 Ending Loan Count 163 Beginning Scheduled Balance 24,106,228.88 Ending Scheduled Balance 23,685,328.86 Group Three Senior Percentage 94.7135 % Group Three Subordinate Percentage 5.2865 % Group Three Senior Prepayment Percentage 100.0000 % Group Three Subordinate Prepayment Percentage 0.0000 % Scheduled Principal 89,776.07 Unscheduled Principal 331,123.95 Group Three CPR 15.3462 % Net Liquidation Proceeds 0.00 Insurance Proceeds 0.00 Advances 0.00 Scheduled Interest 116,894.50 Servicing Fee 5,022.13 Net Interest 111,872.37 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Cumulative Loss as a Percentage of Original Collateral 0.000000 % Bankruptcy Loss 0.00 Fraud Loss 0.00 Special Hazard Loss 0.00 Relief Act Interest Shortfall 0.00 Prepayment Interest Shortfall 0.00 COLLATERAL GROUP FOUR Weighted Average Coupon Rate 6.538894 % Beginning Weighted Average Net Rate (Pass Through Rate) 6.288894 % Ending Weighted Average Net Rate (Pass Through Rate) 6.289039 % Weighted Average Maturity 355 Beginning Loan Count 72 Ending Loan Count 72 Beginning Scheduled Balance 32,567,282.61 Ending Scheduled Balance 32,422,281.95 Group Four Senior Percentage 94.4713 % Group Four Subordinate Percentage 5.5287 % Group Four Senior Prepayment Percentage 100.0000 % Group Four Subordinate Prepayment Percentage 0.0000 % Scheduled Principal 29,814.42 Unscheduled Principal 115,186.24 Group Four CPR 4.1664 % Net Liquidation Proceeds 0.00 Insurance Proceeds 0.00 Advances 0.00 Scheduled Interest 177,461.68 Servicing Fee 6,784.85 Net Interest 170,676.83 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Cumulative Loss as a Percentage of Original Collateral 0.000000 % Bankruptcy Loss 0.00 Fraud Loss 0.00 Special Hazard Loss 0.00 Prepayment Penalties 0.00 Relief Act Interest Shortfall 0.00 Prepayment Interest Shortfall 0.00 TOTAL COLLATERAL Weighted Average Coupon Rate 5.463822 % Beginning Weighted Average Net Rate (Pass Through Rate) 5.213854 % Beginning Loan Count 1,812 Ending Loan Count 1,788 Beginning Scheduled Balance 625,888,220.73 Ending Scheduled Balance 616,507,732.18 Scheduled Principal 2,029,895.44 Unscheduled Principal 7,350,593.11 CPR Entire Deal 13.2578 % Net Liquidation Proceeds 0.00 Insurance Proceeds 0.00 Advances 0.00 Scheduled Interest 2,849,784.91 Servicing Fee 130,393.37 Sub Servicing Fee 16.49 Net Interest 2,719,408.03 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Cumulative Loss as a Percentage of Original Collateral 0.000000 % Bankruptcy Loss 0.00 Fraud Loss 0.00 Special Hazard Loss 0.00 Relief Act Interest Shortfall 0.00 Prepayment Interest Shortfall 0.00 Sec. 4.04 Number and Aggregate Principal Amounts of Mortgage Loans in Delinquency Group 1 Principal Category Number Balance Percentage 1 Month 0 0.00 0.00 % 2 Month 0 0.00 0.00 % 3 Month 0 0.00 0.00 % Total 0 0.00 0.00 % Group 2 Principal Category Number Balance Percentage 1 Month 1 125,066.28 0.12 % 2 Month 1 215,785.88 0.20 % 3 Month 0 0.00 0.00 % Total 2 340,852.16 0.32 % Group 3 Principal Category Number Balance Percentage 1 Month 0 0.00 0.00 % 2 Month 0 0.00 0.00 % 3 Month 0 0.00 0.00 % Total 0 0.00 0.00 % Group 4 Principal Category Number Balance Percentage 1 Month 0 0.00 0.00 % 2 Month 0 0.00 0.00 % 3 Month 0 0.00 0.00 % Total 0 0.00 0.00 % Group Totals Principal Category Number Balance Percentage 1 Month 1 125,066.28 0.02 % 2 Month 1 215,785.88 0.04 % 3 Month 0 0.00 0.00 % Total 2 340,852.16 0.06 % Sec. 4.04 Number and Aggregate Principal Amounts of Mortgage Loans in Foreclosure Group 1 Principal Number Balance Percentage 0 0.00 0.00 % Group 2 Principal Number Balance Percentage 0 0.00 0.00 % Group 3 Principal Number Balance Percentage 0 0.00 0.00 % Group 4 Principal Number Balance Percentage 0 0.00 0.00 % Group Totals Principal Number Balance Percentage 0 0.00 0.00 % Sec. 4.04 Number and Aggregate Principal Amounts of Mortgage Loans in Bankruptcy Loans in Bankruptcy Group 1 Principal Number Balance Percentage 0 0.00 0.00 % Group 2 Principal Number Balance Percentage 0 0.00 0.00 % Group 3 Principal Number Balance Percentage 0 0.00 0.00 % Group 4 Principal Number Balance Percentage 0 0.00 0.00 % Group Totals Principal Number Balance Percentage 0 0.00 0.00 % Sec. 4.04 Number and Aggregate Principal Amounts of REO Loans Group 1 Principal Number Balance Percentage 0 0.00 0.00 % Group 2 Principal Number Balance Percentage 0 0.00 0.00 % Group 3 Principal Number Balance Percentage 0 0.00 0.00 % Group 4 Principal Number Balance Percentage 0 0.00 0.00 % Group Totals Principal Number Balance Percentage 0 0.00 0.00 % Pool 1 Fraud Loss Coverage Amount 4,688,887.46 Pool 1 Bankruptcy Coverage Amnount 100,000.00 Pool 1 Special Hazard Coverage Amnount 4,688,887.46 Pool 2,3,4 Fraud Loss Coverage Amount 1,998,147.60 Pool 2,3,4 Bankruptcy Coverage Amnount 100,000.00 Pool 2,3,4 Special Hazard Coverage Amnount 4,688,887.46 Sec. 4.04(xii) AGGREGATE OUTSTANDING INTEREST SHORTFALLS Class IA1 Shortfall 0.00 Class IA2 Shortfall 0.00 Class IA3 Shortfall 0.00 Class IA4 Shortfall 0.00 Class IA5 Shortfall 0.00 Class IA6 Shortfall 0.00 Class IA7 Shortfall 0.00 Class IA8 Shortfall 0.00 Class IA9 Shortfall 0.00 Class IIA1 Shortfall 0.00 Class IIAX Shortfall 0.00 Class iiia1 Shortfall 0.00 Class iiiax Shortfall 0.00 Class IVA Shortfall 0.00 Class IVAX Shortfall 0.00 Class ib1 Shortfall 0.00 Class ib2 Shortfall 0.00 Class ib3 Shortfall 0.00 Class ib4 Shortfall 0.00 Class ib5 Shortfall 0.00 Class ib6 Shortfall 0.00 Class AR Shortfall 0.00 Class cb1 Shortfall 0.00 Class cb2 Shortfall 0.00 Class cb3 Shortfall 0.00 Class cb4 Shortfall 0.00 Class cb5 Shortfall 0.00 Class cb6 Shortfall 0.00 Relief Act Shortfalls Class IA1 Relief Act Shortfall 0.00 Class IA2 Relief Act Shortfall 0.00 Class IA3 Relief Act Shortfall 0.00 Class IA4 Relief Act Shortfall 0.00 Class IA5 Relief Act Shortfall 0.00 Class IA6 Relief Act Shortfall 0.00 Class IA4 Relief Act Shortfall 0.00 Class IA5 Relief Act Shortfall 0.00 Class IA6 Relief Act Shortfall 0.00 Class IA7 Relief Act Shortfall 0.00 Class IA8 Relief Act Shortfall 0.00 Class IA9 Relief Act Shortfall 0.00 Class IIA1 Relief Act Shortfall 0.00 Class IIAX Relief Act Shortfall 0.00 Class iiia1 Relief Act Shortfall 0.00 Class iiiax Relief Act Shortfall 0.00 Class IVA Relief Act Shortfall 0.00 Class IVAX Relief Act Shortfall 0.00 Class ib1 Relief Act Shortfall 0.00 Class ib2 Relief Act Shortfall 0.00 Class ib3 Relief Act Shortfall 0.00 Class ib4 Relief Act Shortfall 0.00 Class ib5 Relief Act Shortfall 0.00 Class ib6 Relief Act Shortfall 0.00 Class AR Relief Act Shortfall 0.00 Class cb1 Relief Act Shortfall 0.00 Class cb2 Relief Act Shortfall 0.00 Class cb3 Relief Act Shortfall 0.00 Class cb4 Relief Act Shortfall 0.00 Class cb5 Relief Act Shortfall 0.00 Class cb6 Relief Act Shortfall 0.00 Total Relief Act 0.00 Prepayment Interest Shortfalls Class IA1 PPIS Shortfall 0.00 Class IA2 PPIS Shortfall 0.00 Class IA3 PPIS Shortfall 0.00 Class IA4 PPIS Shortfall 0.00 Class IA5 PPIS Shortfall 0.00 Class IA6 PPIS Shortfall 0.00 Class IA7 PPIS Shortfall 0.00 Class IA8 PPIS Shortfall 0.00 Class IA9 PPIS Shortfall 0.00 Class IIA1 PPIS Shortfall 0.00 Class IIAX PPIS Shortfall 0.00 Class iiia1 PPIS Shortfall 0.00 Class iiiax PPIS Shortfall 0.00 Class IVA PPIS Shortfall 0.00 Class IVAX PPIS Shortfall 0.00 Class ib1 PPIS Shortfall 0.00 Class ib2 PPIS Shortfall 0.00 Class ib3 PPIS Shortfall 0.00 Class ib4 PPIS Shortfall 0.00 Class ib5 PPIS Shortfall 0.00 Class ib6 PPIS Shortfall 0.00 Class AR PPIS Shortfall 0.00 Class cb1 PPIS Shortfall 0.00 Class cb2 PPIS Shortfall 0.00 Class cb3 PPIS Shortfall 0.00 Class cb4 PPIS Shortfall 0.00 Class cb5 PPIS Shortfall 0.00 Class cb6 PPIS Shortfall 0.00 Total PPIS 0.00 Copyright 2001 J.P. Morgan Chase & Co. All rights reserved.

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event

Reported): October 21, 2004 J.P. MORGAN ACCEPTANCE CORPORATION I J.P. MORGAN MORTGAGE TRUST 2004-S1

J.P. MORGAN ACCEPTANCE CORPORATION I
(Exact name of registrant as specified in its charter)
Delaware	333-109775	13-3475488
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
270 Park Avenue New York, New York 10017
(Address of Principal Executive Offices) (Zip Code)
Registrant’s telephone number, including area code (212) 834-3850

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) Pre-commencement communications pursuant to Rule 14d-2(d) under the Exchange Act (17 CFR 240.14d-2(b)) Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01. Other Events.

On August 27, 2004, J.P. Morgan Acceptance Corporation I (the “Company”) entered into a Pooling and Servicing Agreement dated as of August 1, 2004 (the “Pooling and Servicing Agreement”), by and among the Company, as depositor, Chase Manhattan Mortgage Corporation, as master servicer (in such capacity, the “Master Servicer”), JPMorgan Chase Bank, as securities administrator (in such capacity, the “Securities Administrator”), and Wachovia Bank, National Association, as trustee (the “Trustee”), providing for the issuance of J.P. Morgan Mortgage Trust 2004-S1 Mortgage Pass-Through Certificates. The Pooling and Servicing Agreement is annexed hereto as Exhibit 99.1.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired:

Not applicable.

(b) Pro forma financial information:

Not applicable.

Exhibit No.

Description

99.1

The Pooling and Servicing Agreement, dated as of August 1, 2004, by and among the Company, the Master Servicer, the Securities Administrator and the Trustee.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

J.P. MORGAN ACCEPTANCE CORPORATION I

By: /s/ Brian Simons

Name: Brian Simons

Title: Vice President

Dated: October 21, 2004

Exhibit Index

99.1

Pooling and Servicing Agreement

Filing Compare · J.P. Morgan Mortgage Trust 2004-S1