<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (IDENTIFY
SPECIFIC FINANCIAL STATEMENTS HERE) THE COMPANY'S CONSOLIDATED INCOME STATEMENT,
CONSOLIDATED BALANCE SHEET, AND CONSOLIDATED STATEMENT OF CASH FLOWS AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000815094
<NAME> ABIOMED, INC.

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          MAR-31-2000
<PERIOD-START>                             APR-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                       5,117,314
<SECURITIES>                                 8,543,274
<RECEIVABLES>                                7,126,081
<ALLOWANCES>                                   209,701
<INVENTORY>                                  3,559,112
<CURRENT-ASSETS>                            24,714,854
<PP&E>                                       8,917,312
<DEPRECIATION>                               5,109,700
<TOTAL-ASSETS>                              29,658,800
<CURRENT-LIABILITIES>                        6,167,909
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        86,577
<OTHER-SE>                                  23,245,539
<TOTAL-LIABILITY-AND-EQUITY>                29,658,800
<SALES>                                     10,519,990
<TOTAL-REVENUES>                            10,519,990
<CGS>                                        9,314,614
<TOTAL-COSTS>                               14,724,614
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                           (397,503)
<INCOME-PRETAX>                            (3,807,121)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (3,807,121)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (3,807,121)
<EPS-BASIC>                                      (.44)
<EPS-DILUTED>                                    (.44)