<ARTICLE> 9
<LEGEND>
This schedule contains summary financial information extracted from the
unaudited interim consolidated financial statements, related notes and
management's discussion and analysis contained in the report on form 10Q filed
by Silicon Valley Bancshares for the six months ended June 30, 1998.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                         143,022
<INT-BEARING-DEPOSITS>                             238
<FED-FUNDS-SOLD>                               548,000
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,066,464
<INVESTMENTS-CARRYING>                               0
<INVESTMENTS-MARKET>                                 0
<LOANS>                                      1,350,705
<ALLOWANCE>                                     42,300
<TOTAL-ASSETS>                               3,123,086
<DEPOSITS>                                   2,867,279
<SHORT-TERM>                                         0
<LIABILITIES-OTHER>                             19,085
<LONG-TERM>                                          0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        85,570
<OTHER-SE>                                     112,693
<TOTAL-LIABILITIES-AND-EQUITY>               3,123,086
<INTEREST-LOAN>                                 64,862
<INTEREST-INVEST>                               30,202
<INTEREST-OTHER>                                 9,208
<INTEREST-TOTAL>                               104,272
<INTEREST-DEPOSIT>                              36,931
<INTEREST-EXPENSE>                              36,934
<INTEREST-INCOME-NET>                           67,338
<LOAN-LOSSES>                                    9,505
<SECURITIES-GAINS>                                 477
<EXPENSE-OTHER>                                 40,678
<INCOME-PRETAX>                                 26,981
<INCOME-PRE-EXTRAORDINARY>                      15,780
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    15,780
<EPS-PRIMARY>                                     0.78
<EPS-DILUTED>                                     0.75
<YIELD-ACTUAL>                                     5.3
<LOANS-NON>                                     29,798
<LOANS-PAST>                                     1,573
<LOANS-TROUBLED>                                     0
<LOANS-PROBLEM>                                 16,470
<ALLOWANCE-OPEN>                                37,700
<CHARGE-OFFS>                                    6,511
<RECOVERIES>                                     1,606
<ALLOWANCE-CLOSE>                               42,300
<ALLOWANCE-DOMESTIC>                            28,188
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                         14,112