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Institutional Holdings of SEMGROUP CORPORATION CLASS A COMMON STOCK (SEMG) on 12/31/2011

1. Company Information

Company/StockSEMGROUP CORPORATION CLASS A COMMON STOCK (stock symbol: SEMG)
Funds Ownership107 out of total 3028 funds (4%) own this stock
Funds own total 36,701,143 shares, 88.08% of all outstanding shares
Funds BOUGHT 9,793,149 more shares (+36.39%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)SOROBAN CAPITAL PARTNERS LLC3,250,000New3.79%7.80%
2.)CREDIT AGRICOLE S A2,156,000Added 1.83%0.27%5.17%
3.)ROBECO INVESTMENT MANAGEMENT INC2,077,713Cut -1.65%0.27%4.99%
4.)SENATOR INVESTMENT GROUP LP2,066,329New1.79%4.96%
5.)JANA PARTNERS LLC1,961,141New2.22%4.71%
6.)VANGUARD GROUP INC1,828,404Added 5.33%0.01%4.39%
7.)APOLLO MANAGEMENT HOLDINGS LP1,765,048Cut -9.49%0.51%4.24%
8.)EDGEPOINT INVESTMENT GROUP INC1,595,500New3.17%3.83%
9.)THIRD AVENUE MANAGEMENT LLC1,257,351Added 33.39%0.82%3.02%
10.)BANK OF NOVA SCOTIA 1,177,881Unchanged0.19%2.83%
11.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA1,078,777Added 1.25%0.01%2.59%
12.)ROYAL BANK OF SCOTLAND GROUP PLC932,026Cut 0.00%0.36%2.24%
13.)NATIXIS918,520New1.43%2.20%
14.)CYRUS CAPITAL PARTNERS LP860,168Cut -30.19%4.41%2.06%
15.)BLACKROCK FUND ADVISORS840,651Added 3.32%0.01%2.02%
16.)STATE STREET CORP832,706Added 6.50%0.00%2.00%
17.)DIMENSIONAL FUND ADVISORS INC749,541New0.03%1.80%
18.)COURAGE CAPITAL MANAGEMENT LLC653,883Added 11.99%6.22%1.57%
19.)ROYAL BANK OF CANADA 647,328Added 0.16%0.02%1.55%
20.)CANYON CAPITAL ADVISORS LLC606,755Cut -25.12%2.72%1.46%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)DELTA PARTNERS LLC393,790Cut -41.89%10.16%0.95%
2.)COOPER CREEK PARTNERS MANAGEMENT LLC271,554Added 24.20%9.16%0.65%
3.)COURAGE CAPITAL MANAGEMENT LLC653,883Added 11.99%6.22%1.57%
4.)CYRUS CAPITAL PARTNERS LP860,168Cut -30.19%4.41%2.06%
5.)EDOMA PARTNERS LLP521,811New3.80%1.25%
6.)SOROBAN CAPITAL PARTNERS LLC3,250,000New3.79%7.80%
7.)EDGEPOINT INVESTMENT GROUP INC1,595,500New3.17%3.83%
8.)SENECA CAPITAL INVESTMENTS LP450,000New3.14%1.08%
9.)CANYON CAPITAL ADVISORS LLC606,755Cut -25.12%2.72%1.46%
10.)ALLEN INVESTMENT MANAGEMENT LLC245,000New2.27%0.59%
11.)JANA PARTNERS LLC1,961,141New2.22%4.71%
12.)PARA ADVISORS LLC139,000New2.09%0.33%
13.)SENATOR INVESTMENT GROUP LP2,066,329New1.79%4.96%
14.)TALPION FUND MANAGEMENT LP60,000New1.52%0.14%
15.)NATIXIS918,520New1.43%2.20%
16.)WESTERN ASSET MANAGEMENT CO93,556Cut -56.49%1.21%0.22%
17.)FRONTIER INVESTMENT MGMT CO122,925Added 6.32%1.17%0.29%
18.)SANDELL ASSET MANAGEMENT CORP283,000Unchanged1.16%0.68%
19.)COHEN CAPITAL MANAGEMENT INC97,050Cut -3.38%1.13%0.23%
20.)40 NORTH INDUSTRIES LLC123,000New1.00%0.30%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)SOROBAN CAPITAL PARTNERS LLC3,250,0003.79%7.80%
2.)SENATOR INVESTMENT GROUP LP2,066,3291.79%4.96%
3.)JANA PARTNERS LLC1,961,1412.22%4.71%
4.)EDGEPOINT INVESTMENT GROUP INC1,595,5003.17%3.83%
5.)NATIXIS918,5201.43%2.20%
6.)DIMENSIONAL FUND ADVISORS INC749,5410.03%1.80%
7.)EDOMA PARTNERS LLP521,8113.80%1.25%
8.)SENECA CAPITAL INVESTMENTS LP450,0003.14%1.08%
9.)WELLS FARGO & CO MN396,0850.01%0.95%
10.)WEISS MULTI STRATEGY ADVISERS LLC317,6200.28%0.76%
11.)WEISS GEORGE A317,6200.28%0.76%
12.)STARK OFFSHORE MANAGEMENT LLC257,0170.63%0.62%
13.)ALLEN INVESTMENT MANAGEMENT LLC245,0002.27%0.59%
14.)KLEINHEINZ CAPITAL PARTNERS INC170,0000.29%0.41%
15.)PARA ADVISORS LLC139,0002.09%0.33%
16.)40 NORTH INDUSTRIES LLC123,0001.00%0.30%
17.)FEDERATED INVESTORS INC PA 84,8550.01%0.20%
18.)CHESAPEAKE PARTNERS MANAGEMENT CO INC MD76,0520.13%0.18%
19.)CITIGROUP INC75,2550.00%0.18%
20.)TALPION FUND MANAGEMENT LP60,0001.52%0.14%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)NORTH RUN CAPITAL L P1,200,4003.59%2.88%
2.)GREENLIGHT CAPITAL INC968,2200.41%2.32%
3.)OAKTREE CAPITAL MANAGEMENT LP541,4140.21%1.30%
4.)CATAPULT CAPITAL MANAGEMENT LLC186,8440.66%0.45%
5.)CARLSON CAPITAL L P175,4000.06%0.42%
6.)WELLS FARGO & CO MN128,622CALL0.00%0.31%
7.)SVENSON SCOTT128,3560.61%0.31%
8.)MOAB CAPITAL PARTNERS LLC80,6000.99%0.19%
9.)COPIA CAPITAL LLC78,3440.77%0.19%
10.)CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM73,1000.00%0.18%
11.)VALINOR MANAGEMENT LLC50,0000.06%0.12%
12.)MACQUARIE GROUP LTD44,0880.00%0.11%
13.)WATERSTONE CAPITAL MANAGEMENT LP42,5820.05%0.10%
14.)RENAISSANCE TECHNOLOGIES LLC32,1000.00%0.08%
15.)TECHNICAL FINANCIAL SERVICES LLC23,3430.03%0.06%
16.)MADISON SQUARE INVESTORS LLC22,2890.01%0.05%
17.)CUTTER & CO BROKERAGE INC16,1500.20%0.04%
18.)SANKATY ADVISORS LLC6,5271.15%0.02%
19.)US BANCORP DE 920.00%0.00%