10-D 1 cit07op1_10d-200706.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 10-D ASSET-BACKED ISSUER DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the monthly distribution period from: May 26, 2007 to June 25, 2007 Commission File Number of issuing entity: 333-138237-06 Citigroup Mortgage Loan Trust 2007-OPX1 (Exact name of issuing entity as specified in its charter) Commission File Number of depositor: 333-138237 Citigroup Mortgage Loan Trust Inc. (Exact name of depositor as specified in its charter) Citigroup Global Markets Realty Corp. (Exact name of sponsor as specified in its charter) New York (State or other jurisdiction of incorporation or organization of the issuing entity) 54-2198899 54-2198900 54-2198901 54-2198902 (I.R.S. Employer Identification No.) c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices of the issuing entity) (Zip Code) (410) 884-2000 (Telephone number, including area code) Not Applicable (Former name, former address, if changed since last report) Registered/reporting pursuant to (check one) Title of Section Section Section Name of Exchange Class 12(b) 12(g) 15(d) (If Section 12(b)) A-1-A _____ _____ __X___ ____________ A-1-B _____ _____ __X___ ____________ A-2 _____ _____ __X___ ____________ A-3-A _____ _____ __X___ ____________ A-3-B _____ _____ __X___ ____________ A-4-A _____ _____ __X___ ____________ A-4-B _____ _____ __X___ ____________ A-5-A _____ _____ __X___ ____________ A-5-B _____ _____ __X___ ____________ M-1 _____ _____ __X___ ____________ M-2 _____ _____ __X___ ____________ M-3 _____ _____ __X___ ____________ M-4 _____ _____ __X___ ____________ R _____ _____ __X___ ____________ R-X _____ _____ __X___ ____________ CE _____ _____ __X___ ____________ P _____ _____ __X___ ____________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes __X__ No ____ Part I - DISTRIBUTION INFORMATION Item 1. Distribution and Pool Performance Information On June 25, 2007 a distribution was made to holders of Citigroup Mortgage Loan Trust 2007-OPX1. The distribution report is attached as an Exhibit to this Form 10-D. Please see Item 9(b), Exhibit 99.1 for the related information. Part II - OTHER INFORMATION Item 9. Exhibits. (a) The following is a list of documents filed as part of this Report on Form 10-D: (99.1) Monthly report distributed to holders of Citigroup Mortgage Loan Trust 2007-OPX1, relating to the June 25, 2007 distribution. (b) The exhibits required to be filed by the Registrant pursuant to this Form are listed above and in the Exhibit Index that immediately follows the signature page hereof. SIGNATURES 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 thereunto duly authorized. Citigroup Mortgage Loan Trust 2007-OPX1 (Issuing Entity) Wells Fargo Bank, N.A. (Master Servicer) /s/ Kelly Rentz Kelly Rentz, Officer Date: July 2, 2007 EXHIBIT INDEX Exhibit Number Description EX-99.1 Monthly report distributed to holders of Citigroup Mortgage Loan Trust 2007-OPX1, relating to the June 25, 2007 distribution. EX-99.1 Citigroup Mortgage Loan Trust Inc. Asset Backed Pass-Through Certificates Distribution Date: 6/25/2007 Citigroup Mortgage Loan Trust Inc. Asset Backed Pass-Through Certificates Series 2007-OPX1 Contact: Customer Service - CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 www.ctslink.com Telephone: (301) 815-6600 Fax: (301) 815-6660

Certificateholder Distribution Summary Class CUSIP Record Certificate Beginning Interest Date Pass-Through Certificate Distribution Rate Balance A-1-A 17311FAA2 0506/2422/2007 5.39000% ~~174~~168,~~108~~310,~~920~~761.1386 ~~782~~781,~~039~~195.2370 A-1-B 17311FAB0 0506/2422/2007 5.48000% 4342,~~526~~077,~~533~~017.3700 198,~~771~~556.1777 A-2 17311FAC8 0506/2422/2007 5.52000% 150,632,000.00 ~~692~~716,~~907~~004.2011 A-3-A 17311FAD6 0405/3031/2007 5.97200% 35,407,000.00 176,208.84 A-3-B 17311FAE4 0405/3031/2007 6.07100% 3,934,000.00 19,902.76 A-4-A 17311FAF1 0405/3031/2007 6.18500% 63,494,000.00 327,258.66 A-4-B 17311FAG9 0405/3031/2007 6.33300% 15,873,000.00 83,769.76 A-5-A 17311FAH7 0405/3031/2007 5.76400% 50,364,000.00 241,915.08 A-5-B 17311FAJ3 0405/3031/2007 5.86300% 5,596,000.00 27,341.12 M-1 17311FAK0 0405/3031/2007 6.02500% 16,592,000.00 83,305.67 M-2 17311FAL8 0405/3031/2007 6.42100% 11,161,000.00 59,720.65 M-3 17311FAM6 0405/3031/2007 6.50000% 5,129,000.00 27,782.08 M-4 17311FAN4 0405/3031/2007 6.50000% 3,017,000.00 16,342.08 R 17311FAR5 0405/3031/2007 0.00000% 0.00 0.00 R-X 17311FAS3 0405/3031/2007 0.00000% 0.00 0.00 CE 17311FAP9 0405/3031/2007 0.00000% 7,843,436.36 ~~566~~501,~~595~~941.2324 P 17311FAQ7 0405/3031/2007 0.00000% 100.00 179,~~691~~352.0610 Totals ~~586~~579,~~677~~430,~~989~~315.8622 3,~~321~~270,~~550~~596.5962

Certificateholder Distribution Summary (continued) Class Principal Current Ending Total Cumulative Distribution Realized Certificate Distribution Realized Loss Balance Losses A-1-A 5,~~798~~184,~~158~~416.2645 0.00 ~~168~~163,~~310~~126,~~761~~345.8641 65,~~580~~965,~~197~~612.4915 0.00 A-1-B 1,~~449~~296,~~516~~083.37 0.00 4240,~~077~~780,~~017~~933.0063 1,~~648~~494,~~287~~640.5414 0.00 A-2 0.00 0.00 150,632,000.00 ~~692~~716,~~907~~004.2011 0.00 A-3-A 0.00 0.00 35,407,000.00 176,208.84 0.00 A-3-B 0.00 0.00 3,934,000.00 19,902.76 0.00 A-4-A 0.00 0.00 63,494,000.00 327,258.66 0.00 A-4-B 0.00 0.00 15,873,000.00 83,769.76 0.00 A-5-A 0.00 0.00 50,364,000.00 241,915.08 0.00 A-5-B 0.00 0.00 5,596,000.00 27,341.12 0.00 M-1 0.00 0.00 16,592,000.00 83,305.67 0.00 M-2 0.00 0.00 11,161,000.00 59,720.65 0.00 M-3 0.00 0.00 5,129,000.00 27,782.08 0.00 M-4 0.00 0.00 3,017,000.00 16,342.08 0.00 R 0.00 0.00 0.00 0.00 0.00 R-X 0.00 0.00 0.00 0.00 0.00 CE 0.00 0.00 7,843,436.36 ~~566~~501,~~595~~941.2324 0.00 P 0.00 0.00 100.00 179,~~691~~352.0610 0.00 Totals 76,~~247~~480,~~674~~499.6382 0.00 ~~579~~572,~~430~~949,~~315~~815.2240 109,~~569~~751,~~225~~096.2244 0.00 As Master Servicer, Wells Fargo Bank, N.A. has independently calculated collateral information based on loan level data received from external parties, which may include the Servicers, Issuer and other parties to the transaction. Wells Fargo Bank, N.A. expressly disclaims any responsibility for the accuracy or completeness of information furnished to it by those third parties. All Record Dates are based upon the governing documents and logic set forth as of closing.

Principal Distribution Statement Class Original Beginning Scheduled UnScheduled Accretion Face Certificate Principal Principal Amount Balance Distribution Distribution A-1-A 187,439,000.00 ~~174~~168,~~108~~310,~~920~~761.1386 0.00 5,~~798~~184,~~158~~416.2645 0.00 A-1-B 46,859,000.00 4342,~~526~~077,~~533~~017.3700 0.00 1,~~449~~296,~~516~~083.37 0.00 A-2 150,632,000.00 150,632,000.00 0.00 0.00 0.00 A-3-A 35,407,000.00 35,407,000.00 0.00 0.00 0.00 A-3-B 3,934,000.00 3,934,000.00 0.00 0.00 0.00 A-4-A 63,494,000.00 63,494,000.00 0.00 0.00 0.00 A-4-B 15,873,000.00 15,873,000.00 0.00 0.00 0.00 A-5-A 50,364,000.00 50,364,000.00 0.00 0.00 0.00 A-5-B 5,596,000.00 5,596,000.00 0.00 0.00 0.00 M-1 16,592,000.00 16,592,000.00 0.00 0.00 0.00 M-2 11,161,000.00 11,161,000.00 0.00 0.00 0.00 M-3 5,129,000.00 5,129,000.00 0.00 0.00 0.00 M-4 3,017,000.00 3,017,000.00 0.00 0.00 0.00 R 0.00 0.00 0.00 0.00 0.00 R-X 0.00 0.00 0.00 0.00 0.00 CE 7,844,158.10 7,843,436.36 0.00 0.00 0.00 P 100.00 100.00 0.00 0.00 0.00 Totals 603,341,258.10 ~~586~~579,~~677~~430,~~989~~315.8622 0.00 76,~~247~~480,~~674~~499.6382 0.00

Principal Distribution Statement (continued) Class Realized Total Ending Ending Total Loss Principal Certificate Certificate Principal Reduction Balance Percentage Distribution A-1-A 0.00 5,~~798~~184,~~158~~416.2645 ~~168~~163,~~310~~126,~~761~~345.8641 0.~~89794953~~87029031 5,~~798~~184,~~158~~416.2645 A-1-B 0.00 1,~~449~~296,~~516~~083.37 4240,~~077~~780,~~017~~933.0063 0.~~89794953~~87029031 1,~~449~~296,~~516~~083.37 A-2 0.00 0.00 150,632,000.00 1.00000000 0.00 A-3-A 0.00 0.00 35,407,000.00 1.00000000 0.00 A-3-B 0.00 0.00 3,934,000.00 1.00000000 0.00 A-4-A 0.00 0.00 63,494,000.00 1.00000000 0.00 A-4-B 0.00 0.00 15,873,000.00 1.00000000 0.00 A-5-A 0.00 0.00 50,364,000.00 1.00000000 0.00 A-5-B 0.00 0.00 5,596,000.00 1.00000000 0.00 M-1 0.00 0.00 16,592,000.00 1.00000000 0.00 M-2 0.00 0.00 11,161,000.00 1.00000000 0.00 M-3 0.00 0.00 5,129,000.00 1.00000000 0.00 M-4 0.00 0.00 3,017,000.00 1.00000000 0.00 R 0.00 0.00 0.00 0.00000000 0.00 R-X 0.00 0.00 0.00 0.00000000 0.00 CE 0.00 0.00 7,843,436.36 0.99990799 0.00 P 0.00 0.00 100.00 1.00000000 0.00 Totals 0.00 76,~~247~~480,~~674~~499.6382 ~~579~~572,~~430~~949,~~315~~815.2240 0.~~96036912~~94962810 76,~~247~~480,~~674~~499.6382

Principal Distribution Factors Statement Class Original Beginning Scheduled UnScheduled Accretion Face Certificate Principal Principal Amount Balance Distribution Distribution A-1-A 187,439,000.00 ~~928~~897.~~88310400~~94952950 0.00000000 3027.~~93357444~~65921953 0.00000000 A-1-B 46,859,000.00 ~~928~~897.~~88310399~~94952944 0.00000000 3027.~~93357455~~65921957 0.00000000 A-2 150,632,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3-A 35,407,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-3-B 3,934,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-4-A 63,494,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-4-B 15,873,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5-A 50,364,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 A-5-B 5,596,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-1 16,592,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-2 11,161,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-3 5,129,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-4 3,017,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 R 0.00 0.00000000 0.00000000 0.00000000 0.00000000 R-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 CE 7,844,158.10 999.90799013 0.00000000 0.00000000 0.00000000 P 100.00 1000.00000000 0.00000000 0.00000000 0.00000000

Principal Distribution Factors Statement (continued) Class Realized Total Ending Ending Total Loss Principal Certificate Certificate Principal Reduction Balance Percentage Distribution A-1-A 0.00000000 3027.~~93357444~~65921953 ~~897~~870.~~94952950~~29030997 0.~~89794953~~87029031 3027.~~93357444~~65921953 A-1-B 0.00000000 3027.~~93357455~~65921957 ~~897~~870.~~94952944~~29030987 0.~~89794953~~87029031 3027.~~93357455~~65921957 A-2 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 A-3-A 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 A-3-B 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 A-4-A 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 A-4-B 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 A-5-A 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 A-5-B 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-1 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-2 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-3 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 M-4 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 CE 0.00000000 0.00000000 999.90799013 0.99990799 0.00000000 P 0.00000000 0.00000000 1000.00000000 1.00000000 0.00000000 NOTE: All classes per $1,000 denomination.

Interest Distribution Statement Class Accrual Accrual Current Beginning Current Payment of Dates Days Certificate Certificate/ Accrued Unpaid Interest Rate Notional Interest Shortfall (1) Balance A-1-A 0405/25/07 - 0506/24/07 3031 5.39000% ~~174~~168,~~108~~310,~~920~~761.1386 ~~782~~781,~~039~~195.2370 0.00 A-1-B 0405/25/07 - 0506/24/07 3031 5.48000% 4342,~~526~~077,~~533~~017.3700 198,~~771~~556.1777 0.00 A-2 0405/25/07 - 0506/24/07 3031 5.52000% 150,632,000.00 ~~692~~716,~~907~~004.2011 0.00 A-3-A 0405/01/07 - 0405/30/07 30 5.97200% 35,407,000.00 176,208.84 0.00 A-3-B 0405/01/07 - 0405/30/07 30 6.07100% 3,934,000.00 19,902.76 0.00 A-4-A 0405/01/07 - 0405/30/07 30 6.18500% 63,494,000.00 327,258.66 0.00 A-4-B 0405/01/07 - 0405/30/07 30 6.33300% 15,873,000.00 83,769.76 0.00 A-5-A 0405/01/07 - 0405/30/07 30 5.76400% 50,364,000.00 241,915.08 0.00 A-5-B 0405/01/07 - 0405/30/07 30 5.86300% 5,596,000.00 27,341.12 0.00 M-1 0405/01/07 - 0405/30/07 30 6.02500% 16,592,000.00 83,305.67 0.00 M-2 0405/01/07 - 0405/30/07 30 6.42100% 11,161,000.00 59,720.65 0.00 M-3 0405/01/07 - 0405/30/07 30 6.50000% 5,129,000.00 27,782.08 0.00 M-4 0405/01/07 - 0405/30/07 30 6.50000% 3,017,000.00 16,342.08 0.00 R N/A N/A 0.00000% 0.00 0.00 0.00 R-X N/A N/A 0.00000% 0.00 0.00 0.00 CE N/A N/A 0.00000% 7,843,436.36 0.00 0.00 P N/A N/A 0.00000% 100.00 0.00 0.00 Totals 2,~~737~~759,~~264~~303.3028 0.00

Interest Distribution Statement (continued) Class Current Non-Supported Total Remaining Ending Interest Interest Interest Unpaid Interest Certificate/ Shortfall(1) Shortfall Distribution Shortfall(1) Notional Balance A-1-A 0.00 0.00 ~~782~~781,~~039~~195.2370 0.00 ~~168~~163,~~310~~126,~~761~~345.8641 A-1-B 0.00 0.00 198,~~771~~556.1777 0.00 4240,~~077~~780,~~017~~933.0063 A-2 0.00 0.00 ~~692~~716,~~907~~004.2011 0.00 150,632,000.00 A-3-A 0.00 0.00 176,208.84 0.00 35,407,000.00 A-3-B 0.00 0.00 19,902.76 0.00 3,934,000.00 A-4-A 0.00 0.00 327,258.66 0.00 63,494,000.00 A-4-B 0.00 0.00 83,769.76 0.00 15,873,000.00 A-5-A 0.00 0.00 241,915.08 0.00 50,364,000.00 A-5-B 0.00 0.00 27,341.12 0.00 5,596,000.00 M-1 0.00 0.00 83,305.67 0.00 16,592,000.00 M-2 0.00 0.00 59,720.65 0.00 11,161,000.00 M-3 0.00 0.00 27,782.08 0.00 5,129,000.00 M-4 0.00 0.00 16,342.08 0.00 3,017,000.00 R 0.00 0.00 0.00 0.00 0.00 R-X 0.00 0.00 0.00 0.00 0.00 CE 0.00 0.00 ~~566~~501,~~595~~941.2324 0.00 7,843,436.36 P 0.00 0.00 179,~~691~~352.0610 0.00 100.00 Totals 0.00 0.00 3,~~321~~270,~~550~~596.5962 0.00 (1) Amount also includes Coupon Cap or Basis Risk Shortfalls, if applicable.

Interest Distribution Factors Statement Class Original Current Beginning Current Payment of Face Certificate Certificate/ Accrued Unpaid Interest Amount Rate Notional Interest Shortfall (1) Balance A-1-A 187,439,000.00 5.39000% ~~928~~897.~~88310400~~94952950 4.~~17223326~~16773297 0.00000000 A-1-B 46,859,000.00 5.48000% ~~928~~897.~~88310399~~94952944 4.~~24189953~~23732410 0.00000000 A-2 150,632,000.00 5.52000% 1000.00000000 4.~~60000000~~75333336 0.00000000 A-3-A 35,407,000.00 5.97200% 1000.00000000 4.97666676 0.00000000 A-3-B 3,934,000.00 6.07100% 1000.00000000 5.05916624 0.00000000 A-4-A 63,494,000.00 6.18500% 1000.00000000 5.15416669 0.00000000 A-4-B 15,873,000.00 6.33300% 1000.00000000 5.27750016 0.00000000 A-5-A 50,364,000.00 5.76400% 1000.00000000 4.80333333 0.00000000 A-5-B 5,596,000.00 5.86300% 1000.00000000 4.88583274 0.00000000 M-1 16,592,000.00 6.02500% 1000.00000000 5.02083353 0.00000000 M-2 11,161,000.00 6.42100% 1000.00000000 5.35083326 0.00000000 M-3 5,129,000.00 6.50000% 1000.00000000 5.41666602 0.00000000 M-4 3,017,000.00 6.50000% 1000.00000000 5.41666556 0.00000000 R 0.00 0.00000% 0.00000000 0.00000000 0.00000000 R-X 0.00 0.00000% 0.00000000 0.00000000 0.00000000 CE 7,844,158.10 0.00000% 999.90799013 0.00000000 0.00000000 P 100.00 0.00000% 1000.00000000 0.00000000 0.00000000

Interest Distribution Factors Statement (continued) Class Current Non-Supported Total Remaining Unpaid Ending Interest Interest Interest Interest Certificate/ Shortfall(1) Shortfall Distribution Shortfall(1) Notional Balance A-1-A 0.00000000 0.00000000 4.~~17223326~~16773297 0.00000000 ~~897~~870.~~94952950~~29030997 A-1-B 0.00000000 0.00000000 4.~~24189953~~23732410 0.00000000 ~~897~~870.~~94952944~~29030987 A-2 0.00000000 0.00000000 4.~~60000000~~75333336 0.00000000 1000.00000000 A-3-A 0.00000000 0.00000000 4.97666676 0.00000000 1000.00000000 A-3-B 0.00000000 0.00000000 5.05916624 0.00000000 1000.00000000 A-4-A 0.00000000 0.00000000 5.15416669 0.00000000 1000.00000000 A-4-B 0.00000000 0.00000000 5.27750016 0.00000000 1000.00000000 A-5-A 0.00000000 0.00000000 4.80333333 0.00000000 1000.00000000 A-5-B 0.00000000 0.00000000 4.88583274 0.00000000 1000.00000000 M-1 0.00000000 0.00000000 5.02083353 0.00000000 1000.00000000 M-2 0.00000000 0.00000000 5.35083326 0.00000000 1000.00000000 M-3 0.00000000 0.00000000 5.41666602 0.00000000 1000.00000000 M-4 0.00000000 0.00000000 5.41666556 0.00000000 1000.00000000 R 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-X 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 CE 0.00000000 0.00000000 7263.~~23149034~~98917941 0.00000000 999.90799013 P 0.00000000 0.00000000 ~~176910~~93521.~~60000000~~00000000 0.00000000 1000.00000000 (1) Amount also includes Coupon Cap or Basis Risk Shortfalls, if applicable. NOTE: All classes per $1,000 denomination.

Certificateholder Account Statement CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 109,~~676,~~866,067.0162 Reserve Funds and Credit Enhancements 0.00 Proceeds from Repurchased Loans 0.00 Servicer Advances ~~142~~154,~~222~~484.8692 Gains & Subsequent Recoveries (Realized Losses) 0.00 Prepayment Penalties 179,~~691~~352.0610 Swap/Cap Payments 0.00 Total Deposits 10,~~836~~029,~~779~~904.9364 Withdrawals Swap Payments 0.00 Reserve Funds and Credit Enhancements 0.00 Reimbursement for Servicer Advances ~~121~~142,~~038~~222.9486 Total Administration Fees ~~128~~127,~~824~~233.7124 Payment of Interest and Principal 109,~~569~~751,~~225~~096.2244 Total Withdrawals (Pool Distribution Amount) 10,~~819~~020,~~088~~552.8754 Ending Balance 0.00 Servicer Advances are calculated as delinquent scheduled principal and interest.

ADMINISTRATION FEES Gross Servicing Fee* ~~122~~120,~~224~~714.5865 Credit Risk Manager Fee - Clayton Fixed Income Services 5,~~622~~552.3387 Master Servicing Fee - Wells Fargo Bank, N.A. ~~977~~965.8072 Supported Prepayment/Curtailment Interest Shortfall 0.00 Total Administration Fees ~~128~~127,~~824~~233.7124 *Servicer Payees include: OPTEUM FINANCIAL SERVICES

Collateral Statement Total Collateral Description Mixed Fixed Weighted Average Coupon Rate 7.~~040043~~036545 Weighted Average Net Rate 6.~~790043~~786545 Weighted Average Pass-Through Rate 6.~~757764~~754036 Weighted Average Remaining Term ~~352~~351 Principal And Interest Constant 3,~~631~~586,~~889~~095.7047 Beginning Loan Count 2,~~152~~130 Loans Paid in Full 22 Ending Loan Count 2,~~130~~108 Beginning Scheduled Balance ~~586~~579,~~677~~430,~~989~~315.8522 Ending Scheduled Balance ~~579~~572,~~430~~949,~~315~~815.2240 Actual Ending Collateral Balance ~~579~~573,~~584~~100,~~895~~276.8929 Scheduled Principal ~~190~~188,~~024~~439.3029 Unscheduled Principal 76,~~057~~292,~~650~~060.3353 Negative Amortized Principal 0.00 Scheduled Interest 3,~~441~~397,~~865~~656.4018 Servicing Fees ~~122~~120,~~224~~714.5865 Master Servicing Fees ~~977~~965.8072 Trustee Fee 0.00 FRY Amount 0.00 Special Hazard Fee 0.00 Other Fee 14,~~803~~731.6128 Pool Insurance Fee 0.00 Spread 1 0.00 Spread 2 0.00 Spread 3 0.00 Net Interest 3,~~303~~261,~~859~~244.4153 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Percentage of Cumulative Losses 0.0000 Prepayment Penalty Waived Amount 0.00 Prepayment Penalty Waived Count 0 Prepayment Penalty Paid Amount 179,~~691~~352.0610 Prepayment Penalty Paid Count 86 Special Servicing Fee 0.00

Additional Reporting - Deal Level Cash Reporting Net Monthly Excess Cashflow ~~566~~501,~~595~~941.2324 Prepayment Charges 179,~~691~~352.0610 Extraordinary Trust Fund Expenses 0.00 Relief Act Interest Shortfalls 0.00 Informational Reporting LIBOR 5.320000% Senior Enhancement % 7.~~549232~~634619% Delinquency % 01.~~069724~~049798% Significance % 0.~~006772~~006974% Structural Reporting Overcollateralization Amount 7,843,436.36 Overcollateralization Deficiency Amount 0.00 Overcollateralization Increase Amount 0.00 Overcollateralization Reduction Amount 0.00 Overcollateralization Target Amount 7,843,436.36 Trigger Event Reporting Stepdown Date NO Optional Termination Date NO Trigger Event Pass Delinquency Trigger Trigger Result Pass Threshold Value 3.~~642504~~683704% Calculated Value 01.~~069724~~049798% Cumulative Loss Trigger Trigger Result Pass Threshold Value 0.250000% Calculated Value 0.000000%

Delinquency Status DELINQUENT BANKRUPTCY FORECLOSURE REO Total No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 10 0 0 10 ~~148,750~~0.00 0.00 0.00 ~~148,750~~0.00 30 Days 2915 0 0 0 2915 83,~~873~~786,~~528~~442.6972 0.00 0.00 0.00 83,~~873~~786,~~528~~442.6972 60 Days 119 0 0 0 119 ~~404~~5,~~000~~614,602.0065 0.00 0.00 0.00 ~~404~~5,~~000~~614,602.0065 90 Days 01 0 0 0 01 0404,000.00 0.00 0.00 0.00 0404,000.00 120 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 150 Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 3035 10 0 0 3135 9,~~277~~805,~~528~~045.6937 ~~148,750~~0.00 0.00 0.00 9,~~426~~805,~~278~~045.6937 No. of Loans No. of Loans No. of Loans No. of Loans No. of Loans Actual Balance Actual Balance Actual Balance Actual Balance Actual Balance 0-29 Days 0.~~046948~~000000% 0.000000% 0.000000% 0.~~046948~~000000% 0.~~025665~~000000% 0.000000% 0.000000% 0.~~025665~~000000% 30 Days 10.~~361502~~711575% 0.000000% 0.000000% 0.000000% 10.~~361502~~711575% 10.~~531014~~660695% 0.000000% 0.000000% 0.000000% 10.~~531014~~660695% 60 Days 0.~~046948~~901328% 0.000000% 0.000000% 0.000000% 0.~~046948~~901328% 0.~~069705~~979689% 0.000000% 0.000000% 0.000000% 0.~~069705~~979689% 90 Days 0.~~000000~~047438% 0.000000% 0.000000% 0.000000% 0.~~000000~~047438% 0.~~000000~~070494% 0.000000% 0.000000% 0.000000% 0.~~000000~~070494% 120 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 1.~~408451~~660342% 0.~~046948~~000000% 0.000000% 0.000000% 1.~~455399~~660342% 1.~~600720~~710878% 0.~~025665~~000000% 0.000000% 0.000000% 1.~~626384~~710878%

Current Period Class A Insufficient Funds 0.00 Principal Balance of Contaminated Properties 0.00 Periodic Advance ~~142~~154,~~222~~484.8692

Bankruptcy Detail - All Mortgage Loans in Bankruptcy during Current Period

Summary 12 Month Bankruptcy History* New Bankruptcy Loans Month Bankruptcy Percentage Loans in Bankruptcy 0 ~~Jun~~Jul-06 0.000% Original Principal Balance 0.00 ~~Jul~~Aug-06 0.000% Current Actual Balance 0.00 ~~Aug~~Sep-06 0.000% ~~Sep~~Oct-06 0.000% Current Bankruptcy Total ~~Oct~~Nov-06 0.000% Loans in Bankruptcy 10 ~~Nov~~Dec-06 0.000% Original Principal Balance ~~148,750~~0.00 ~~Dec~~Jan-0607 0.000% Current Actual Balance ~~148,750~~0.00 ~~Jan~~Feb-07 0.000% ~~Feb~~Mar-07 0.~~000~~025% ~~Mar~~Apr-07 0.025% ~~Apr~~May-07 0.~~025~~026% ~~May~~Jun-07 0.~~026~~000% *The text reported in the above table is presented graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at www.ctslink.com.

Bankruptcy Detail - All Mortgage Loans in Bankruptcy during Current Period Group Loan Month Loan First State LTV at Original Number Entered Payment Origination Principal Bankruptcy Date Balance ~~Summary~~No ~~0221874790~~Bankruptcy ~~May-2007~~Loans ~~01-Nov-2006~~this ~~TX 79.98 148,750.00~~Period

Bankruptcy Detail - All Mortgage Loans in Bankruptcy during Current Period (continued) Group Loan Current Paid To Months Current Approximate Number Actual Date Delinquent Loan Rate Delinquent Balance Interest ~~Summary~~No ~~0221874790~~Bankruptcy ~~148,750.00~~Loans ~~01-Apr-2007~~this ~~0 7.125% 1,704.42~~Period

Prepayment Detail - Prepayments during Current Period Summary Loans Paid In Full Repurchased Loans Original Current Original Current Principal Scheduled Principal Scheduled Group Count Balance Balance Count Balance Balance Total 22 75,~~433~~931,~~714~~492.00 75,~~041~~921,~~050~~631.6812 0 0.00 0.00

Prepayment Detail - Prepayments during Current Period (continued) Summary Substitution Loans Liquidated Loans Curtailments Original Current Original Current Principal Scheduled Principal Scheduled Curtailment Group Count Balance Balance Count Balance Balance Amount Total 0 0.00 0.00 0 0.00 0.00 19371,~~340~~541.0351

Prepayment Loan Detail - Prepayments during Current Period First Original Loan LTV at Payment Principal Prepayment Group Number State Origination Date Balance Amount Summary ~~0221707612~~0221707701 CATX 8071.0040 01-Oct-2006 ~~812~~260,~~650~~550.00 ~~812~~260,~~650~~550.00 Summary ~~0221707988~~0221707805 PASC 5280.4900 01-~~Oct~~Nov-2006 ~~137~~156,000.00 ~~136~~155,~~168~~954.5556 Summary ~~0221708022~~0221707813 VANJ 7980.2800 01-~~Oct~~Nov-2006 ~~800~~235,~~000~~200.00 ~~800~~234,~~000~~468.0032 Summary ~~0221708107~~0221707931 HIMD 7180.7900 01-~~Sep~~Oct-2006 ~~378~~445,~~000~~763.00 0442,271.0063 Summary ~~0221708230~~0221708013 CANH 5980.00 01-~~Oct~~Sep-2006 ~~236~~143,~~000~~920.00 ~~232~~142,~~261~~764.7974 Summary ~~0221708267~~0221708077 NMWA 80.00 01-~~Sep~~Oct-2006 ~~147~~222,~~336~~000.00 ~~147~~221,~~318~~858.6412 Summary ~~0221708344~~0221708153 CACO 6780.4200 01-Sep-2006 89232,~~000~~253.00 88230,~~862~~436.7000 Summary ~~0221708479~~0221708186 ORMD 80.00 01-~~Oct~~Sep-2006 ~~229~~256,~~600~~000.00 ~~226~~256,~~609~~000.00 Summary ~~0221708543~~0221708198 TXFL 80.00 01-~~Sep~~Nov-2006 ~~126~~232,~~258~~000.00 ~~125~~232,~~276~~000.3600 Summary ~~0221708580~~0221708272 CAFL 5880.1800 01-~~Nov~~Oct-2006 ~~256~~361,~~000~~600.00 ~~256~~361,~~000~~600.00 Summary ~~0221708587~~0221708336 NVCT 8094.0095 01-Oct-2006 ~~530~~188,~~850~~000.00 ~~530~~186,~~849~~781.1183 Summary ~~0221708633~~0221708412 VACA 8065.00 01-~~Sep~~Oct-2006 ~~118~~291,~~320~~850.00 ~~117~~291,~~793~~850.1400 Summary ~~0221708636~~0221708530 CAFL 55100.3800 01-~~Oct~~Nov-2006 ~~560~~213,~~000~~400.00 ~~555~~212,~~753~~256.4243 Summary ~~0221739144~~0221708564 CA 7880.7700 01-~~Dec~~Sep-2006 ~~449~~371,~~000~~896.00 ~~446~~371,~~813~~896.3900 Summary ~~0221739230~~0221708610 CANC 80.00 01-~~Nov~~Sep-2006 ~~263~~132,~~200~~360.00 ~~261~~132,~~700~~360.1400 Summary ~~0221874751~~0221739245 FLNV 7980.9900 01-~~Oct~~Nov-2006 ~~318~~260,~~900~~000.00 ~~318~~260,~~900~~000.00 Summary ~~0221874791~~0221874722 NVRI 7980.9900 01-~~Nov~~Oct-2006 ~~362~~216,~~600~~000.00 ~~362~~216,~~600~~000.00 Summary ~~0221874963~~0221874849 NJCA 8079.0099 01-~~Dec~~Nov-2006 ~~365~~374,~~600~~750.00 ~~365~~374,~~600~~750.00 Summary ~~0221874980~~0221874947 NCCA 7980.7100 01-Dec-2006 ~~432~~600,~~800~~000.00 ~~432~~600,~~800~~000.00 Summary ~~0221875041~~0221875034 CAWA 6980.2300 01-Dec-2006 ~~315~~336,000.00 ~~314~~336,~~754~~000.0600 Summary ~~0221875202~~0221875160 MAWA 8090.00 01-~~Oct~~Nov-2006 ~~197~~202,~~600~~450.00 ~~197~~201,~~600~~221.0039 Summary ~~0221933803~~0221875216 CAIL 6670.9600 01-~~Dec~~Nov-2006 ~~308~~199,~~000~~500.00 ~~308~~199,~~000~~500.00

Prepayment Loan Detail - Prepayments during Current Period (continued) Current Loan PIF Months Loan Original Group Number Type Delinquent Rate Term Seasoning Summary ~~0221707612~~0221707701 Loan Paid in Full ~~(1)~~0 7.~~375~~625% 360 78 Summary ~~0221707988~~0221707805 Loan Paid in Full (1) 76.~~500~~990% 360 7 Summary ~~0221708022~~0221707813 Loan Paid in Full 0 87.~~625~~000% 360 7 Summary ~~0221708107~~0221707931 Loan Paid in Full 0 6.875% 360 ~~360~~8 Summary ~~0221708230~~0221708013 Loan Paid in Full 0(1) 68.~~750~~375% 360 79 Summary ~~0221708267~~0221708077 Loan Paid in Full ~~(1)~~0 76.~~500~~750% 360 8 Summary ~~0221708344~~0221708153 Loan Paid in Full 0(1) 7.~~250~~375% 360 89 Summary ~~0221708479~~0221708186 Loan Paid in Full 01 7.~~375~~625% 360 79 Summary ~~0221708543~~0221708198 Loan Paid in Full 0 7.~~125~~375% 360 87 Summary ~~0221708580~~0221708272 Loan Paid in Full 01 68.625% 360 68 Summary ~~0221708587~~0221708336 Loan Paid in Full 0 7.~~375~~875% 360 78 Summary ~~0221708633~~0221708412 Loan Paid in Full 0 97.~~625~~500% 360 8 Summary ~~0221708636~~0221708530 Loan Paid in Full ~~(1)~~0 68.~~375~~125% 360 7 Summary ~~0221739144~~0221708564 Loan Paid in Full 0 7.~~125~~000% 360 59 Summary ~~0221739230~~0221708610 Loan Paid in Full 0 7.~~125~~500% 360 69 Summary ~~0221874751~~0221739245 Loan Paid in Full ~~(1)~~0 7.250% 360 7 Summary ~~0221874791~~0221874722 Loan Paid in Full 0 67.~~625~~375% 360 68 Summary ~~0221874963~~0221874849 Loan Paid in Full 01 7.~~125~~375% 360 57 Summary ~~0221874980~~0221874947 Loan Paid in Full 0 7.~~990~~250% 360 56 Summary ~~0221875041~~0221875034 Loan Paid in Full 0 67.~~625~~125% 360 56 Summary ~~0221875202~~0221875160 Loan Paid in Full 0 7.~~875~~500% 360 7 Summary ~~0221933803~~0221875216 Loan Paid in Full (1) 68.~~625~~750% 360 57

Prepayment Penalty Detail - Prepayment Penalty Paid during Current Period Prepayment Prepayment Summary Loan Prior Penalty Penalty Count Balance Amount Waived Total 86 1831,~~423,752~~195.7026 179,~~691~~352.0610 0.00

Prepayment Penalty Loan Detail - Prepayment Penalty Paid during Current Period Paid In Prepayment Prepayment Loan Full Prior Penalty Penalty Group Number Date Balance Amount Waived Summary ~~0221707622~~0221708012 Active ~~119~~80,~~385~~964.5575 03.0824 0.00 Summary 0221708132 Active 73,~~232~~171.0319 0.02 0.00 Summary 0221708187 Active 119,~~353~~270.9954 0.01 0.00 Summary 0221708304 Active 109,~~079~~061.3477 0.18 0.00 Summary ~~0221708633~~0221708336 05/0125/2007 ~~117~~186,~~853~~918.5731 19,~~178~~345.5492 0.00 Summary ~~0221875041 05/04/2007 314,754.06 8,347.50 0.00 Summary~~ 0221933668 Active ~~262~~261,~~094~~808.1670 2.73 0.00 ~~Summary 0221933803 05/14/2007 308,000.00 8,162.00 0.00~~

Prepayment Rates

Summary SMM CPR PSA Current Month 1.~~203~~086% Current Month 1312.~~522~~284% Current Month ~~1,101~~860.~~147~~746% 3 Month Average 1.~~306~~053% 3 Month Average 1411.~~501~~917% 3 Month Average ~~1,494~~976.~~203~~269% 12 Month Average 0.000% 12 Month Average 0.000% 12 Month Average 0.000% CPR: Current vs. 12mo Average* PSA: Current vs. 12mo Average* Month Current 12mo Avg. Month Current 12mo Avg. ~~Jun-2006 N/A N/A Jun-2006 N/A N/A~~ Jul-2006 N/A N/A Jul-2006 N/A N/A Aug-2006 N/A N/A Aug-2006 N/A N/A Sep-2006 N/A N/A Sep-2006 N/A N/A Oct-2006 N/A N/A Oct-2006 N/A N/A Nov-2006 N/A N/A Nov-2006 N/A N/A Dec-2006 N/A N/A Dec-2006 N/A N/A Jan-2007 N/A N/A Jan-2007 N/A N/A Feb-2007 N/A N/A Feb-2007 N/A N/A Mar-2007 20.035% N/A Mar-2007 2,414.547% N/A Apr-2007 9.946% N/A Apr-2007 966.915% N/A May-2007 13.522% N/A May-2007 1,101.147% N/A Jun-2007 12.284% N/A Jun-2007 860.746% N/A *The text reported in the above table is presented *The text reported in the above table is presented graphically on the monthly bond remittance report. The graphically on the monthly bond remittance report. The monthly bond remittance report can be viewed online at monthly bond remittance report can be viewed online at www.ctslink.com. www.ctslink.com. Calculation Methodology: Single Month Mortality (SMM): (Partial and full prepayments + Repurchases) / (Beginning Scheduled Balance - Scheduled Principal) Conditional PrePayment Rate (CPR): 1 - ((1 - SMM)^12) PSA Standard Prepayment Model: 100 * CPR / (0.2 * MIN(30,WAS)) Weighted Average Seasoning (WAS): sum((Original Term - Remaining Term)*(Current Scheduled Balance/Deal Scheduled Principal Balance))

Interest Rate Stratification Summary Current Number of Outstanding Percentage of Interest Rate Loans Scheduled Balance(%) Range(%) Balance($) < 5.750 0 0.00 0.000 5.750 5.999 6 1,~~844~~843,~~755~~289.9869 0.~~318~~322 6.000 6.249 19 4,~~476~~474,~~923~~057.9545 0.~~773~~781 6.250 6.499 106 29,~~477~~454,~~296~~034.7523 5.~~087~~141 6.500 6.749 290 90,~~876~~838,~~352~~957.9198 15.~~684~~855 6.750 6.999 ~~644~~641 ~~192~~191,~~585~~372,~~341~~476.6648 33.~~237~~401 7.000 7.249 ~~309~~306 8079,~~299~~317,~~719~~687.0865 13.~~858~~844 7.250 7.499 ~~304~~298 8179,~~085~~142,~~808~~681.7145 13.~~994~~813 7.500 7.749 ~~166~~161 3938,~~697~~543,~~718~~950.1573 6.~~851~~727 7.750 7.999 ~~121~~120 25,~~222~~025,~~286~~147.7464 4.~~353~~368 8.000 8.249 4645 1110,~~054~~838,~~519~~700.3638 1.~~908~~892 8.250 8.499 6160 13,~~177~~031,~~877~~652.8713 2.274 8.500 8.749 2625 43,~~311~~948,~~910~~239.0220 0.~~744~~689 8.750 8.999 1817 3,~~204~~003,~~009~~792.6037 0.~~553~~524 9.000 9.249 3 374,~~902~~784.3292 0.065 9.250 9.499 5 504,~~820~~565.6649 0.~~087~~088 9.500 9.749 4 1,065,~~282~~074.9335 0.~~184~~186 9.750 9.999 0 0.00 0.000 10.000 10.249 0 0.00 0.000 10.250 10.499 1 63,~~750~~721.0609 0.011 10.500 10.749 0 0.00 0.000 10.750 10.999 0 0.00 0.000 11.000 11.249 0 0.00 0.000 11.250 11.499 0 0.00 0.000 >= 11.500 1 107,~~038~~002.4717 0.~~018~~019 Total 2,~~130~~108 ~~579~~572,~~430~~949,~~315~~815.2240 100.000

Filing Compare · Citigroup Mortgage Loan Trust 2007-OPX1