A.M. best's stock indexes four weeks ended March 15, 2007 (Dec. 31, 2004 = 1,000.00).

Four Weeks Ended March 15, 2007 (Dec. 31, 2004 = 1,000.00)

[GRAPHICS OMITTED]

                                              Percent Change

                                       Index   Month/   Year to   Year/
AMB vs Dow                             Close    Month      Date    Year

AMB's Insurance Composite (AMBG)    1,295.24    -4.56     -2.65    6.79
Dow Jones Industrial Avg (DJIA)    12,159.68    -4.74     -2.43    8.47

                                   Percent Change

Global and Regional        Index   Month/   Year to   Year/
Indexes (Ticker)           Close    Month      Date    Year

Insurance Composite Indexes by Region

United States (AMBUS)   1,231.10    -3.40     -2.23    4.18
Europe (AMBEUR)         1,412.45    -6.65     -4.35   13.30
Asia/Pacific (AMBAP)    1,428.54    -4.75      2.33    1.85

Insurance Indexes by Market Type (Global)

Non-Life (AMBGNL)       1,252.91    -3.13     -2.56    8.72
Life (AMBGL)            1,353.79    -5.68     -2.01    4.17
Multi-Line (AMBGML)     1,285.54    -4.45     -3.73    9.69
Reinsurance (AMBGR)     1,283.40    -4.15     -4.16   12.62
Brokers (AMBGB)         1,066.38    -3.17     -1.09   -2.63

(See www.ambest.com/stocks for live feed, methodology and
further detail identifying the companies included in each
index.)

                                        Percent Change

                              Index     Month/   Year to   Year/
U.S. Indexes (Ticker)         Close     Month     Date     Year

Insurance Indexes by Market Type (U.S.)
Multi-Line (AMBUML)          1,096.37    -3.36     -5.70    1.73
Property/Casualty (AMBUPC)   1,189.55    -3.14     -4.40    9.34
Life & Health/HMO (AMBULH)   1,380.30    -3.58      1.34    2.93
Life (AMBUL)                 1,415.51    -4.72      1.00    8.98
Health/HMO (AMBUH)           1,340.58    -2.32      1.70   -2.84
Brokers (AMBUB)              1,044.70    -3.66     -1.62   -4.09

(See www.ambest.com/stocks for live feed, methodology and further
detail identifying the companies included in each index.)


                                                              % Change
                                                    Closing    Month/
Top 5 Global Performers         Ticker   Currency    Price     Month

1. Pacific Century Insurance
  Holdings                      jB0065       HKD       7.88      56.97
2. Bristol West Holdings Inc.     BRW        USD      21.95      26.59
3. Fairfax Financial Holdings
  Ltd.                            FFH        USD     214.25      22.81
4. Hub International Ltd.        THBG        CAD      45.76      18.43
5. First American Corp.           FAF        USD      52.33      17.46

Bottom 5 Global Performers

1. Safety Insurance Group
  Inc.                           SAFT        USD      38.27     -19.21
2. EMC Insurance Group Inc.      EMCI        USD      26.06     -18.82
3. Conseco Inc.                   CNO        USD      17.01     -16.04
4. Tower Ltd.                   jZTWR        NZD       2.25     -12.79
5. Aviva PLC                     ILAV        GBP       7.41     -12.57