pre_text: ( 5 ) we occupy approximately 350000 square feet of the one north end building . ( 6 ) this property is owned by board of trade investment company ( botic ) . kcbt maintains a 51% ( 51 % ) controlling interest in botic . we also lease other office space around the world and have also partnered with major global telecommunications carriers in connection with our telecommunications hubs whereby we place data cabinets within the carriers 2019 existing secured data centers . we believe our facilities are adequate for our current operations and that additional space can be obtained if needed . item 3 . legal proceedings see 201clegal and regulatory matters 201d in note 14 . contingencies to the consolidated financial statements beginning on page 91 for cme group 2019s legal proceedings disclosure which is incorporated herein by reference . item 4 . mine safety disclosures not applicable . part ii item 5 . market for registrant 2019s common equity , related stockholder matters and issuer purchases of equity securities class a common stock our class a common stock is currently listed on nasdaq under the ticker symbol 201ccme . 201d as of february 13 , 2013 , there were approximately 3106 holders of record of our class a common stock . in may 2012 , the company 2019s board of directors declared a five-for-one split of its class a common stock effected by way of a stock dividend to its class a and class b shareholders . the stock split was effective july 20 , 2012 for all shareholders of record on july 10 , 2012 . as a result of the stock split , all amounts related to shares and per share amounts have been retroactively restated . the following table sets forth the high and low sales prices per share of our class a common stock on a quarterly basis , as reported on nasdaq. .
post_text: class b common stock our class b common stock is not listed on a national securities exchange or traded in an organized over- the-counter market . each class of our class b common stock is associated with a membership in a specific division of our cme exchange . cme 2019s rules provide exchange members with trading rights and the ability to use or lease these trading rights . each share of our class b common stock can be transferred only in connection with the transfer of the associated trading rights. .
table: 2012 High Low 2011 High Low
table: First Quarter $59.73 $45.20 First Quarter $63.40 $56.06
table: Second Quarter 58.24 50.70 Second Quarter 62.15 52.45
table: Third Quarter 59.35 49.83 Third Quarter 59.80 47.43
table: Fourth Quarter 57.89 50.12 Fourth Quarter 59.73 45.20
question: Analyse this data from a financial earnings document. what is the maximum change in share price during the first quarter of 2012?