<ARTICLE> 9
<LEGEND>
The unaudited interim consolidated financial statements related notes and
management discussion and analysis contained in the report Form 10-Q filed by
Silicon Valley Bancshares for the six months ended June 30, 1999.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                         131,250
<INT-BEARING-DEPOSITS>                             164
<FED-FUNDS-SOLD>                               752,500
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,593,836
<INVESTMENTS-CARRYING>                               0
<INVESTMENTS-MARKET>                                 0
<LOANS>                                      1,576,215
<ALLOWANCE>                                     56,300
<TOTAL-ASSETS>                               4,081,426
<DEPOSITS>                                   3,790,974
<SHORT-TERM>                                         0
<LIABILITIES-OTHER>                             24,974
<LONG-TERM>                                          0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            21
<OTHER-SE>                                     230,303
<TOTAL-LIABILITIES-AND-EQUITY>               4,081,426
<INTEREST-LOAN>                                 77,059
<INTEREST-INVEST>                               41,094
<INTEREST-OTHER>                                12,925
<INTEREST-TOTAL>                               131,078
<INTEREST-DEPOSIT>                              42,904
<INTEREST-EXPENSE>                              42,904
<INTEREST-INCOME-NET>                           88,174
<LOAN-LOSSES>                                   18,770
<SECURITIES-GAINS>                               (243)
<EXPENSE-OTHER>                                 53,334
<INCOME-PRETAX>                                 27,781
<INCOME-PRE-EXTRAORDINARY>                      16,790
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    16,790
<EPS-BASIC>                                       0.82<F1>
<EPS-DILUTED>                                     0.81<F2>
<YIELD-ACTUAL>                                     5.0
<LOANS-NON>                                     46,678
<LOANS-PAST>                                       678
<LOANS-TROUBLED>                                     0
<LOANS-PROBLEM>                                  8,200
<ALLOWANCE-OPEN>                                46,000
<CHARGE-OFFS>                                   12,239
<RECOVERIES>                                     3,769
<ALLOWANCE-CLOSE>                               56,300
<ALLOWANCE-DOMESTIC>                            31,556
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                         24,744
<FN>
<F1>REPRESENTS BASIC EARNINGS PER SHARE
<F2>REPRESENTS DILUTED EARNINGS PER SHARE
</FN>