<TABLE> <S> <C>
<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE ALLFIRST
FINANCIAL INC. JUNE 30, 2000 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<CASH> 871,892
<INT-BEARING-DEPOSITS> 1,274
<FED-FUNDS-SOLD> 184,810
<TRADING-ASSETS> 2,918
<INVESTMENTS-HELD-FOR-SALE> 4,200,337
<INVESTMENTS-CARRYING> 0
<INVESTMENTS-MARKET> 0
<LOANS> 10,979,275
<ALLOWANCE> 157,351
<TOTAL-ASSETS> 18,041,778
<DEPOSITS> 11,861,433
<SHORT-TERM> 2,507,496
<LIABILITIES-OTHER> 639,317
<LONG-TERM> 1,195,702
8,463
0
<COMMON> 85,395
<OTHER-SE> 1,733,223
<TOTAL-LIABILITIES-AND-EQUITY> 18,041,778
<INTEREST-LOAN> 419,751
<INTEREST-INVEST> 127,516
<INTEREST-OTHER> 2,529
<INTEREST-TOTAL> 549,796
<INTEREST-DEPOSIT> 192,028
<INTEREST-EXPENSE> 300,174
<INTEREST-INCOME-NET> 249,622
<LOAN-LOSSES> 16,875
<SECURITIES-GAINS> 175
<EXPENSE-OTHER> 254,743
<INCOME-PRETAX> 140,691
<INCOME-PRE-EXTRAORDINARY> 140,691
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 92,161
<EPS-BASIC> 0
<EPS-DILUTED> 0
<YIELD-ACTUAL> 3.39
<LOANS-NON> 63,368
<LOANS-PAST> 34,915
<LOANS-TROUBLED> 0
<LOANS-PROBLEM> 80,962
<ALLOWANCE-OPEN> 157,351
<CHARGE-OFFS> 22,906
<RECOVERIES> 6,031
<ALLOWANCE-CLOSE> 157,351
<ALLOWANCE-DOMESTIC> 90,822
<ALLOWANCE-FOREIGN> 9,741
<ALLOWANCE-UNALLOCATED> 56,788
</TABLE>