<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS FINANCIAL DATA SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED 
FROM THE COMPANY'S CONSOLIDATED BALANCE SHEET AS OF MARCH 31, JUNE 30 AND 
SEPTEMBER 30, 1996, AND THE CONSOLIDATED STATEMENT OF INCOME FOR THE THREE, 
SIX AND NINE MONTHS ENDED MARCH 31, JUNE 30 AND SEPTEMBER 30, 1996. THIS 
INFORMATION IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL 
STATEMENTS.
</LEGEND>
<RESTATED> 
<CIK> 0000796370
<NAME> UNITED ASSET MANAGEMENT CORP.
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1996
<PERIOD-START>                             JAN-01-1996             JAN-01-1996             JAN-01-1996
<PERIOD-END>                               MAR-31-1996             JUN-30-1996             SEP-30-1996
<EXCHANGE-RATE>                                      1                       1                       1
<CASH>                                         108,676                 178,525                 197,474
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                  125,540                 135,568                 151,794
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                               247,343                 326,906                 360,563
<PP&E>                                          61,384                  69,080                  71,332
<DEPRECIATION>                                  33,539                  38,259                  40,897
<TOTAL-ASSETS>                               1,362,791<F1>           1,420,584<F1>           1,433,149<F1>
<CURRENT-LIABILITIES>                          143,984                 193,482                 210,876
<BONDS>                                        653,436<F2>             649,232<F2>             641,043<F2>
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                           616                     692                     692
<OTHER-SE>                                     503,297                 519,017                 524,345
<TOTAL-LIABILITY-AND-EQUITY>                 1,362,791               1,420,584               1,433,149
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                               208,522                 415,187                 634,805
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                  134,431                 269,861                 415,384
<OTHER-EXPENSES>                                28,780<F3>              53,362<F3>              77,654<F3>
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                              11,055                  21,166                  30,754
<INCOME-PRETAX>                                 34,256                  70,798                 111,013
<INCOME-TAX>                                    14,769                  30,434                  47,644
<INCOME-CONTINUING>                             19,487                  40,364                  63,369
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    19,487                  40,364                  63,369
<EPS-PRIMARY>                                     $.29                    $.59                    $.93
<EPS-DILUTED>                                     $.27                    $.56                    $.88
<FN>
<F1>INCLUDES COST ASSIGNED TO CONTRACTS ACQUIRED, NET, OF $1,026,876, $1,002,412 
AND $978,143 FOR THE THREE, SIX AND NINE MONTHS ENDED MARCH 31, JUNE, 30 AND
SEPTEMBER 30, 1996 RESPECTIVELY.
<F2>SENIOR NOTES PAYABLE OF $150,000 AND $150,000 AND SUBORDINATED NOTES
PAYABLE OF $503,436, $499,232 AND $491,043 FOR THE THREE, SIX AND NINE MONTHS
ENDED MARCH 31, JUNE 30 AND SEPTEMBER 30, 1996, RESPECTIVELY.
<F3>REPRESENTS AMORTIZATION OF COST ASSIGNED TO CONTRACTS ACQUIRED.
</FN>
        

</TABLE>