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Institutional Holdings of MARATHON PETROLEUM CORPORATION (MPC) on 12/31/2011

1. Company Information

Company/StockMARATHON PETROLEUM CORPORATION (stock symbol: MPC)
Funds Ownership494 out of total 3028 funds (16%) own this stock
Funds own total 278,260,952 shares, --% of all outstanding shares
Funds BOUGHT 2,906,061 more shares (+1.06%) in the quarter ended on 12/31/2011

2. Top 20 Funds Held MPC in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)FMR LLC18,364,266Added 7.03%0.12%--%
2.)JANA PARTNERS LLC16,636,720New24.07%--%
3.)ALLIANCEBERNSTEIN LP16,027,491Cut -16.20%0.58%--%
4.)VANGUARD GROUP INC14,887,793Added 3.40%0.08%--%
5.)STATE STREET CORP14,222,631Added 1.07%0.08%--%
6.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA10,456,708Added 10.33%0.09%--%
7.)FRANKLIN RESOURCES INC8,431,566Added 8.38%0.21%--%
8.)LAZARD ASSET MANAGEMENT LLC6,509,057Cut -0.07%0.54%--%
9.)JENNISON ASSOCIATES LLC6,198,955Unchanged0.29%--%
10.)BLACKROCK ADVISORS LLC6,096,365Added 18.46%0.23%--%
11.)WELLINGTON MANAGEMENT CO LLP5,313,431Added 11.18%0.07%--%
12.)LSV ASSET MANAGEMENT5,300,761Added 0.85%0.55%--%
13.)DEUTSCHE BANK AG 4,698,770Added 18.77%0.18%--%
14.)BANK OF NEW YORK MELLON CORP4,378,729Added 6.10%0.06%--%
15.)NORTHERN TRUST CORP4,110,986Cut -1.10%0.07%--%
16.)PASSPORT CAPITAL LLC3,798,500Cut -4.49%10.14%--%
17.)BARROW HANLEY MEWHINNEY & STRAUSS INC3,556,500Cut -2.63%0.28%--%
18.)BLACKROCK FUND ADVISORS3,376,761Added 4.16%0.06%--%
19.)DIMENSIONAL FUND ADVISORS INC3,302,323New0.14%--%
20.)BLACKROCK GROUP LTD3,273,755Added 10.03%0.09%--%



3. Top 20 Funds Held MPC in this Quarter (By % of Portfolio) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)JANA PARTNERS LLC16,636,720New24.07%--%
2.)PASSPORT CAPITAL LLC3,798,500Cut -4.49%10.14%--%
3.)COLUMBUS HILL CAPITAL MANAGEMENT LP462,600Cut -13.95%5.64%--%
4.)JANA PARTNERS LLC536,000CALLNew4.96%--%
5.)GRISANTI BROWN & PARTNERS LLC277,604Cut -59.86%4.38%--%
6.)SENECA CAPITAL INVESTMENTS LP425,000Added 6.25%3.79%--%
7.)SLS MANAGEMENT LLC59,200Unchanged3.78%--%
8.)SEMAPHORE MANAGEMENT LLC252,364Cut -9.66%3.45%--%
9.)SIR CAPITAL MANAGEMENT LP554,858Added 10.47%3.32%--%
10.)PROXIMA CAPITAL MANAGEMENT LLC505,486Cut -28.81%3.32%--%
11.)MOODY ALDRICH PARTNERS LLC418,830Cut -12.25%3.10%--%
12.)WS CAPITAL MANAGEMENT LP325,000Cut -55.48%2.95%--%
13.)STILLWATER CAPITAL ADVISORS LLC106,419Added 11.93%2.94%--%
14.)GUINNESS ASSET MANAGEMENT LTD162,060Added 15.79%2.65%--%
15.)STEWART CHARLES MOTT FOUNDATION30,257Cut -26.17%2.40%--%
16.)CAMBRIDGE FINANCIAL GROUP INC208,304Added 5.05%2.03%--%
17.)FINANCIAL ENGINES ADVISORS LLC66,170Cut -57.64%1.92%--%
18.)40 NORTH INDUSTRIES LLC159,948New1.67%--%
19.)SANDELL ASSET MANAGEMENT CORP306,199Added 19.52%1.61%--%
20.)VIGILANT CAPITAL MANAGEMENT LLC90,656Added 9.29%1.57%--%

4. Top 20 Funds BOUGHT NEW MPC in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)JANA PARTNERS LLC16,636,72024.07%--%
2.)DIMENSIONAL FUND ADVISORS INC3,302,3230.14%--%
3.)JANUS CAPITAL MANAGEMENT LLC2,912,6350.11%--%
4.)RCM (UK) LTD1,382,4481.52%--%
5.)STEADFAST CAPITAL MANAGEMENT LLC935,4031.03%--%
6.)MADISON SQUARE INVESTORS LLC553,3520.20%--%
7.)CLOUGH CAPITAL PARTNERS L P549,8000.52%--%
8.)JANA PARTNERS LLC536,000CALL4.96%--%
9.)NIKKO ASSET MANAGEMENT AMERICAS INC302,0500.60%--%
10.)OZ MANAGEMENT LP289,500PUT0.04%--%
11.)INVERNESS COUNSEL INC NY 268,6341.00%--%
12.)OZ MANAGEMENT LP236,050CALL0.03%--%
13.)POINTSTATE CAPITAL LP200,0000.51%--%
14.)DEKABANK DEUTSCHE GIROZENTRALE191,2950.15%--%
15.)40 NORTH INDUSTRIES LLC159,9481.67%--%
16.)CALVERT ASSET MANAGEMENT CO INC MD129,5000.74%--%
17.)FJARDE AP FONDEN (THE FOURTH SWEDISH NATIONAL PENSIONFUND)125,8090.10%--%
18.)LEUTHOLD WEEDEN CAPITAL MANAGEMENT LLC100,4260.16%--%
19.)SPARK LP DE97,0000.81%--%
20.)ANDRA AP FONDEN85,4000.09%--%

5. Top 20 Funds SOLD OUT MPC in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)GOODMAN & COMPANY INVESTMENT COUNSEL LTD3,576,0700.52%--%
2.)JANUS CAPITAL MANAGEMENT LLC2,423,7350.08%--%
3.)SOUND SHORE MANAGEMENT INC CT 2,074,2951.15%--%
4.)COBALT CAPITAL MANAGEMENT INC1,251,3752.82%--%
5.)ING INVESTMENT MANAGEMENT (EUROPE) BV935,9490.29%--%
6.)MADISON SQUARE INVESTORS LLC853,4380.26%--%
7.)HGK ASSET MANAGEMENT INC671,3220.90%--%
8.)BLACKTHORN INVESTMENT GROUP LLC590,8624.70%--%
9.)ASCEND CAPITAL LLC561,0001.25%--%
10.)MARTIN CURRIE LTD521,2460.88%--%
11.)ALYESKA INVESTMENT GROUP LP502,5310.37%--%
12.)HIGHBRIDGE CAPITAL MANAGEMENT LLC418,9980.11%--%
13.)IRIDIAN ASSET MANAGEMENT LLC CT411,2980.22%--%
14.)SCHMEIDLER A R & CO INC380,9611.53%--%
15.)HIGHVISTA STRATEGIES LLC263,9121.95%--%
16.)TIMBER HILL LLC258,966CALL0.02%--%
17.)DECADE CAPITAL MANAGEMENT LLC253,0001.08%--%
18.)TIMBER HILL LLC239,066PUT0.02%--%
19.)AXA FINANCIAL INC202,7470.04%--%
20.)CITIGROUP INC200,000PUT0.01%--%