performance graph the following graph compares the yearly change in the cumulative total stockholder return for our last five full fiscal years , based upon the market price of our common stock , with the cumulative total return on a nasdaq composite index ( u.s . companies ) and a peer group , the nasdaq medical equipment-sic code 3840-3849 index , which is comprised of medical equipment companies , for that period . the performance graph assumes the investment of $ 100 on march 31 , 2006 in our common stock , the nasdaq composite index ( u.s . companies ) and the peer group index , and the reinvestment of any and all dividends. .
this graph is not 201csoliciting material 201d under regulation 14a or 14c of the rules promulgated under the securities exchange act of 1934 , is not deemed filed with the securities and exchange commission and is not to be incorporated by reference in any of our filings under the securities act of 1933 , as amended , or the exchange act whether made before or after the date hereof and irrespective of any general incorporation language in any such filing . transfer agent american stock transfer & trust company , 59 maiden lane , new york , ny 10038 , is our stock transfer agent. .
3/31/2006 3/31/2007 3/31/2008 3/31/2009 3/31/2010 3/31/2011
ABIOMED, Inc 100 105.89 101.86 37.98 80.00 112.64
Nasdaq Composite Index 100 103.50 97.41 65.33 102.49 118.86
Nasdaq Medical Equipment SIC Code 3840-3849 100 88.78 84.26 46.12 83.47 91.35
3/31/2006 3/31/2007 3/31/2008 3/31/2009 3/31/2010 3/31/2011
abiomed inc 100 105.89 101.86 37.98 80.00 112.64
nasdaq composite index 100 103.50 97.41 65.33 102.49 118.86
nasdaq medical equipment sic code 3840-3849 100 88.78 84.26 46.12 83.47 91.35
what is the roi of an investment in abiomed inc from march 2006 to march 2009?