Financial report 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] .

Financial table:
period: oct . 1 through oct . 31; total number ofsharespurchased [a]: 1405535; averageprice paidper share: 153.18; total number of sharespurchased as part ofapublicly announced planor program [b]: 1405535; maximum number ofshares that may yetbe purchased under the planor program [b]: 4020650
period: nov . 1 through nov . 30; total number ofsharespurchased [a]: 1027840; averageprice paidper share: 158.66; total number of sharespurchased as part ofapublicly announced planor program [b]: 1025000; maximum number ofshares that may yetbe purchased under the planor program [b]: 2995650
period: dec . 1 through dec . 31; total number ofsharespurchased [a]: 2500944; averageprice paidper share: 163.14; total number of sharespurchased as part ofapublicly announced planor program [b]: 2498520; maximum number ofshares that may yetbe purchased under the planor program [b]: 497130
period: total; total number ofsharespurchased [a]: 4934319; averageprice paidper share: $ 159.37; total number of sharespurchased as part ofapublicly announced planor program [b]: 4929055; maximum number ofshares that may yetbe purchased under the planor program [b]: n/a

Additional report context:
[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 november?
Answer: 21%