| DEAL NAME | MSAC 2005-WMC4 |
| Closing Date | 5/27/2005 |
| |
| Initial Collateral Characteristics | |
| Principal Balance ($) | 1,256,126,072 |
| |
| Sellers | WMC(100.00%) |
| Servicers | CW(100.00%) |
| |
| Number of Loans | 6557 |
| Avg Loan Balance ($) | 191,570 |
| |
| Fixed/Floating | |
| % FRM | 17.24 |
| % ARM | 82.76 |
| |
| %IO | 28.47 |
| Wtd Avg IO Term (months) | 60 |
| |
| Wtd Avg Current Mortgage Rate (%) | 7.000 |
| Non-Zero Wtd Avg Margin (%) | 6.092 |
| Non-Zero Wtd Avg Initial Cap (%) | 2.450 |
| Non-Zero Wtd Avg Periodic Cap (%) | 1.003 |
| |
| Lien Composition | |
| % 1st Lien | 91.46 |
| % 2nd Lien | 8.54 |
| |
| Non-Zero Wtd Avg FICO | 640 |
| % FICO below 600 (inc. N/A) | 21.76 |
| % FICO below 550 (inc. N/A) | 6.79 |
| |
| Wtd Avg Comb Orig LTV | 81.86 |
| % CLTV > 80 | 34.01 |
| % CLTV > 90 | 14.19 |
| % CLTV > 95 | 8.26 |
| |
| % Silent Seconds | 42.54 |
| CLTV incl. all simul. liens (%) | 90.06 |
| |
| Documentation Level | |
| % Full Documentation | 45.04 |
| % Stated Documentation | 39.55 |
| % Limited Documentation | 12.41 |
| % Lite Documentation | 3.00 |
| |
| % Owner Occupied | 94.78 |
| |
| Loan Purpose | |
| % Cashout Refinance | 41.26 |
| % Purchase | 48.92 |
| % Rate Term Refinance | 9.82 |
| |
| State Concentration (Over 5%) | CA(53.69%),NY(6.36%) |
| |
| % Prepay Penalty | 71.90 |
| |
| Wtd Avg Std Orig Term (months) | 343 |
| Wtd Avg Std Rem Term (months) | 340 |
| Wtd Average Loan Age (months) | 3 |
