| DEAL NAME | MSM 2006-12XS |
| Closing Date | 9/29/2006 |
| |
| Initial Collateral Characteristics | |
| Principal Balance ($) | 521,284,433 |
| |
| Sellers (Over 10%) | Morgan Stanley Mortgage Capital Inc.(40.74%),First National Bank of Nevada(25.47%),Greenpoint Mortgage Funding, Inc.(14.93%),Opteum Financial(11.21%) |
| |
| Servicers (Over 10%) | GMAC Mortgage Corporation(83.76%),Greenpoint Mortgage Funding, Inc.(14.93%) |
| |
| Number of Loans | 2,327 |
| Avg Loan Balance ($) | 224,016 |
| |
| Fixed/Floating | |
| % FRM | 100 |
| % ARM | 0 |
| % Short Arm | 0 |
| % 3/1 or 3/6 | 0 |
| % 5/1 or 5/6 | 0 |
| % 7/1 or 7/6 | 0 |
| % 10/1 or 10/6 | 0 |
| |
| % IO | 46.35 |
| Wtd Avg IO Term (months) | 118 |
| |
| Wtd Avg Current Mortgage Rate (%) | 7.59 |
| < 4.00% | 0 |
| 4.0000% - 4.9999% | 0 |
| 5.0000% - 5.9999% | 0.48 |
| 6.0000% - 6.9999% | 13.26 |
| 7.0000% - 7.9999% | 65.24 |
| 8.0000% - 8.9999% | 18.39 |
| 9.0000% - 9.9999% | 2.22 |
| 10.0000% - 10.9999% | 0.27 |
| 11.000% + | 0.14 |
| |
| Non-Zero Wtd Avg Margin (%) | 0 |
| Non-Zero Wtd Avg Initial Cap (%) | 0 |
| Non-Zero Wtd Avg Periodic Cap (%) | 0 |
| |
| Lien Composition | |
| % 1st Lien | 100 |
| % 2nd Lien | 0 |
| |
| Non-Zero Wtd Avg FICO | 694 |
| % FICO below 660 (inc. N/A) | 26.99 |
| % FICO below 620 (inc. N/A) | 5.42 |
| |
| Wtd Avg Orig LTV | 74.85 |
| % LTV > 80 | 5.7 |
| % LTV > 90 | 2.88 |
| % LTV > 95 | 0.48 |
| |
| Documentation Level | |
| % Full/Alt Documentation | 13.73 |
| % Stated Documentation | 7.14 |
| % Limited Documentation | 50.18 |
| % No Documentation | 13.89 |
| % No Ratio Documentation | 15.06 |
| |
| % Owner Occupied | 72.65 |
| % Investor | 24.11 |
| % Second Home | 3.24 |
| |
| Loan Purpose | |
| % Cashout Refinance | 38.16 |
| % Purchase | 50.86 |
| % Rate Term Refinance | 10.98 |
| |
| State Concentration (Over 5%) | CA(21.44%),FL(11.56%),NY(10.21%),NJ(5.72%),TX(5.65%) |
| |
| % Prepay Penalty | 48.28 |
| |
| Wtd Avg Std Orig Term (months) | 352 |
| Wtd Avg Std Rem Term (months) | 349 |
| Wtd Average Loan Age (months) | 2 |