pre_text: stock performance graph the following graph compares the most recent five-year performance of the company 2019s common stock with ( 1 ) the standard & poor 2019s ( s&p ) 500 ae index , ( 2 ) the s&p 500 ae materials index , a group of 25 companies categorized by standard & poor 2019s as active in the 201cmaterials 201d market sector , ( 3 ) the s&p aerospace & defense select industry index , a group of 33 companies categorized by standard & poor 2019s as active in the 201caerospace & defense 201d industry and ( 4 ) the s&p 500 ae industrials index , a group of 69 companies categorized by standard & poor 2019s as active in the 201cindustrials 201d market sector . the graph assumes , in each case , an initial investment of $ 100 on december 31 , 2013 , and the reinvestment of dividends . historical prices prior to the separation of alcoa corporation from the company on november 1 , 2016 , have been adjusted to reflect the value of the separation transaction . the graph , table and related information shall not be deemed to be 201cfiled 201d with the sec , nor shall such information be incorporated by reference into future filings under the securities act of 1933 or securities exchange act of 1934 , each as amended , except to the extent that the company specifically incorporates it by reference into such filing . please note that the company intends to replace the s&p 500 ae materials index with the s&p aerospace & defense select industry index and the s&p 500 ae industrials index in subsequent stock performance graphs . we believe that the companies and industries represented in the s&p aerospace & defense select industry index and the s&p 500 ae industrials index better reflect the markets in which the company currently participates . all three indices are represented in the graph below . arconic inc . s&p 500 s&p materials s&p aerospace & defense s&p industrials cumulative total return based upon an initial investment of $ 100 at december 31 , 2013 with dividends reinvested 12/13 12/14 12/15 12/16 12/17 12/18 period ending copyright a9 2019 standard & poor's , a division of s&p global . all rights reserved. .
post_text: s&p 500 ae index 100 113.69 115.26 129.05 157.22 150.33 s&p 500 ae materials index 100 106.91 97.95 114.30 141.55 120.74 s&p aerospace & defense select industry index 100 111.43 117.49 139.70 197.50 181.56 s&p 500 ae industrials index 100 109.83 107.04 127.23 153.99 133.53 .
table: As of December 31, 2013 2014 2015 2016 2017 2018
table: Arconic Inc. $100 $149.83 $94.62 $80.22 $119.02 $74.47
table: S&P 500<sup>®</sup>Index 100 113.69 115.26 129.05 157.22 150.33
table: S&P 500<sup>®</sup>Materials Index 100 106.91 97.95 114.30 141.55 120.74
table: S&P Aerospace & Defense Select Industry Index 100 111.43 117.49 139.70 197.50 181.56
table: S&P 500<sup>®</sup>Industrials Index 100 109.83 107.04 127.23 153.99 133.53
question: Analyse this data from a financial earnings document. considering one year of investment , what is the variation between the return provided by arconic inc . and the one provided by s&p 500 aeindustrials index?