Please answer the given financial question based on the context.
Context: five-year performance comparison 2013 the following graph provides an indicator of cumulative total shareholder returns for the corporation as compared to the peer group index ( described above ) , the dj trans , and the s&p 500 . the graph assumes that $ 100 was invested in the common stock of union pacific corporation and each index on december 31 , 2008 and that all dividends were reinvested . the information below is historical in nature and is not necessarily indicative of future performance . purchases of equity securities 2013 during 2013 , we repurchased 14996957 shares of our common stock at an average price of $ 152.14 . the following table presents common stock repurchases during each month for the fourth quarter of 2013 : period total number of shares purchased [a] average price paid per share total number of shares purchased as part of a publicly announced plan or program [b] maximum number of shares that may yet be purchased under the plan or program [b] .
|period|total number ofsharespurchased [a]|averageprice paidper share|total number of sharespurchased as part ofapublicly announced planor program [b]|maximum number ofshares that may yetbe purchased under the planor program [b]|
|oct . 1 through oct . 31|1405535|153.18|1405535|4020650|
|nov . 1 through nov . 30|1027840|158.66|1025000|2995650|
|dec . 1 through dec . 31|2500944|163.14|2498520|497130|
|total|4934319|$ 159.37|4929055|n/a|
[a] total number of shares purchased during the quarter includes approximately 5264 shares delivered or attested to upc by employees to pay stock option exercise prices , satisfy excess tax withholding obligations for stock option exercises or vesting of retention units , and pay withholding obligations for vesting of retention shares . [b] on april 1 , 2011 , our board of directors authorized the repurchase of up to 40 million shares of our common stock by march 31 , 2014 . these repurchases may be made on the open market or through other transactions . our management has sole discretion with respect to determining the timing and amount of these transactions . on november 21 , 2013 , the board of directors approved the early renewal of the share repurchase program , authorizing the repurchase of 60 million common shares by december 31 , 2017 . the new authorization is effective january 1 , 2014 , and replaces the previous authorization , which expired on december 31 , 2013 , three months earlier than its original expiration date. .
Question: what percentage of total shares purchased where purchased in october?
Answer:
0.28485