Please answer the given financial question based on the context.
Context: 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. .
|as of december 31,|2013|2014|2015|2016|2017|2018|
|arconic inc .|$ 100|$ 149.83|$ 94.62|$ 80.22|$ 119.02|$ 74.47|
|s&p 500 aeindex|100|113.69|115.26|129.05|157.22|150.33|
|s&p 500 aematerials 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 aeindustrials index|100|109.83|107.04|127.23|153.99|133.53|
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 .
Question: 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?
Answer:
0.4