| DEAL NAME | MSM 2006-13ARX |
| Closing Date | 9/29/2006 |
| |
| Initial Collateral Characteristics | |
| Principal Balance ($) | 608,918,208 |
| |
| Sellers (Over 10%) | Morgan Stanley Mortgage Capital Inc.(86.33%) |
| |
| Servicers (Over 10%) | GMAC Mortgage Corporation(95.10%) |
| |
| Number of Loans | 1,873 |
| Avg Loan Balance ($) | 325,103 |
| |
| Fixed/Floating | |
| % FRM | 0 |
| % ARM | 100 |
| % Short Arm | 4.89 |
| % 3/1 or 3/6 | 15.21 |
| % 5/1 or 5/6 | 70.32 |
| % 7/1 or 7/6 | 9.58 |
| % 10/1 or 10/6 | 0 |
| |
| % IO | 85.74 |
| Wtd Avg IO Term (months) | 110 |
| |
| Wtd Avg Current Mortgage Rate (%) | 7.491 |
| < 4.00% | 0 |
| 4.0000% - 4.9999% | 0 |
| 5.0000% - 5.9999% | 1.23 |
| 6.0000% - 6.9999% | 17.1 |
| 7.0000% - 7.9999% | 62.69 |
| 8.0000% - 8.9999% | 18.54 |
| 9.0000% - 9.9999% | 0.4 |
| 10.0000% - 10.9999% | 0.04 |
| 11.000% + | 0 |
| |
| Non-Zero Wtd Avg Margin (%) | 2.965 |
| Non-Zero Wtd Avg Initial Cap (%) | 5.087 |
| Non-Zero Wtd Avg Periodic Cap (%) | 1.759 |
| |
| Lien Composition | |
| % 1st Lien | 100 |
| % 2nd Lien | 0 |
| |
| Non-Zero Wtd Avg FICO | 691 |
| % FICO below 660 (inc. N/A) | 27.01 |
| % FICO below 620 (inc. N/A) | 2.52 |
| |
| Wtd Avg Orig LTV | 77.52 |
| % LTV > 80 | 3.34 |
| % LTV > 90 | 1.02 |
| % LTV > 95 | 0.1 |
| |
| Documentation Level | |
| % Full/Alt Documentation | 9.64 |
| % Stated Documentation | 12.79 |
| % Limited Documentation | 47.48 |
| % No Documentation | 9.21 |
| % No Ratio Documentation | 20.87 |
| |
| % Owner Occupied | 75.71 |
| % Investor | 19.55 |
| % Second Home | 4.74 |
| |
| Loan Purpose | |
| % Cashout Refinance | 24.6 |
| % Purchase | 68.49 |
| % Rate Term Refinance | 6.91 |
| |
| State Concentration (Over 5%) | CA(41.56%),NV(8.50%),FL(6.69%),VA(5.55%),AZ(5.18%) |
| |
| % Prepay Penalty | 45.54 |
| |
| Wtd Avg Std Orig Term (months) | 360 |
| Wtd Avg Std Rem Term (months) | 358 |
| Wtd Average Loan Age (months) | 2 |
