Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.

Text: table of contents performance graph the following performance graph shows the cumulative total return to a holder of the company 2019s common stock , assuming dividend reinvestment , compared with the cumulative total return , assuming dividend reinvestment , of the standard & poor ( "s&p" ) 500 index and the dow jones us financials index during the period from december 31 , 2010 through december 31 , 2015. . <table class='wikitable'><tr><td>1</td><td>-</td><td>12/10</td><td>12/11</td><td>12/12</td><td>12/13</td><td>12/14</td><td>12/15</td></tr><tr><td>2</td><td>e*trade financial corporation</td><td>100.00</td><td>49.75</td><td>55.94</td><td>122.75</td><td>151.59</td><td>185.25</td></tr><tr><td>3</td><td>s&p 500 index</td><td>100.00</td><td>102.11</td><td>118.45</td><td>156.82</td><td>178.29</td><td>180.75</td></tr><tr><td>4</td><td>dow jones us financials index</td><td>100.00</td><td>87.16</td><td>110.56</td><td>148.39</td><td>170.04</td><td>170.19</td></tr></table> .
Question: what is the change in the value of an investment in e*trade financial corporation from 2010 to 2015?
Answer: 85.25
Question: what return does this represent?

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0.8525
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