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Institutional Holdings of CONSTELLATION ENERGY GROUP, INC. (CEG) on 12/31/2011

1. Company Information

Company/StockCONSTELLATION ENERGY GROUP, INC. (stock symbol: CEG)
Funds Ownership318 out of total 3028 funds (11%) own this stock
Funds own total 137,351,079 shares, 68.44% of all outstanding shares
Funds BOUGHT 1,557,681 more shares (+1.15%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)STATE STREET CORP12,998,864Added 12.81%0.09%6.48%
2.)VANGUARD GROUP INC10,533,191Added 1.17%0.07%5.25%
3.)FMR LLC6,726,091Added 0.44%0.05%3.35%
4.)FRANKLIN RESOURCES INC6,533,105Added 140.64%0.19%3.26%
5.)J P MORGAN CHASE & CO5,176,100Added 38.37%0.09%2.58%
6.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA5,175,377Added 6.11%0.05%2.58%
7.)ARROWGRASS CAPITAL PARTNERS (US) LP4,127,858Added 290.84%9.96%2.06%
8.)WESTCHESTER CAPITAL MANAGEMENT LLC3,508,520Added 43.94%3.22%1.75%
9.)ADAGE CAPITAL PARTNERS GP LLC2,745,242Added 33.87%0.48%1.37%
10.)ARBITRAGE & TRADING MANAGEMENT CO2,673,218Added 50.93%2.83%1.33%
11.)DEUTSCHE BANK AG 2,667,216Added 230.80%0.12%1.33%
12.)DONALD SMITH & CO INC2,514,812Cut -31.80%2.38%1.25%
13.)TACONIC CAPITAL ADVISORS LP2,500,000Unchanged3.23%1.25%
14.)AQR CAPITAL MANAGEMENT LLC2,354,848Cut -13.00%0.60%1.17%
15.)MASSACHUSETTS FINANCIAL SERVICES CO MA 2,222,389Cut -9.69%0.10%1.11%
16.)ARONSON & JOHNSON & ORTIZ LP2,144,300Cut -17.64%0.45%1.07%
17.)NORTHERN TRUST CORP2,141,186Cut -0.95%0.04%1.07%
18.)WATER ISLAND CAPITAL LLC2,111,017Added 85.25%4.66%1.05%
19.)BLACKROCK FUND ADVISORS2,084,114Added 4.49%0.04%1.04%
20.)D E SHAW & CO INC2,049,011Added 28.43%0.22%1.02%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)ARROWGRASS CAPITAL PARTNERS (US) LP4,127,858Added 290.84%9.96%2.06%
2.)TIRESIAS CAPITAL LTD643,330Added 471.85%8.07%0.32%
3.)REALM PARTNERS LLC603,965Cut -75.35%7.34%0.30%
4.)WEST COAST ASSET MANAGEMENT INC96,490Cut -40.18%6.88%0.05%
5.)P SCHOENFELD ASSET MANAGEMENT LLC NY1,720,900Added 186.82%5.19%0.86%
6.)FNY MANAGED ACCOUNTS LLC62,595Added 159.65%5.02%0.03%
7.)WATER ISLAND CAPITAL LLC2,111,017Added 85.25%4.66%1.05%
8.)MANIKAY PARTNERS LLC500,000Added 45.56%3.97%0.25%
9.)SANDELL ASSET MANAGEMENT CORP620,000New3.88%0.31%
10.)TACONIC CAPITAL ADVISORS LP2,500,000Unchanged3.23%1.25%
11.)WESTCHESTER CAPITAL MANAGEMENT LLC3,508,520Added 43.94%3.22%1.75%
12.)ARBITRAGE & TRADING MANAGEMENT CO2,673,218Added 50.93%2.83%1.33%
13.)DONALD SMITH & CO INC2,514,812Cut -31.80%2.38%1.25%
14.)GABELLI SECURITIES INC196,400Added 384.94%2.21%0.10%
15.)OXFORD ASSET MANAGEMENT1,632,899Added 3.16%1.60%0.81%
16.)PERESS INVESTMENT ADVISORS LTD45,460Cut -0.22%1.59%0.02%
17.)VERTEX ONE ASSET MANAGEMENT INC225,000Added 80.00%1.57%0.11%
18.)ANCHOR CAPITAL ADVISORS INC1,634,695New1.52%0.81%
19.)LOEB ARBITRAGE MANAGEMENT LLC81,000Added 117.15%1.41%0.04%
20.)DENALI ADVISORS LLC267,300Unchanged1.31%0.13%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)ANCHOR CAPITAL ADVISORS INC1,634,6951.52%0.81%
2.)JANUS CAPITAL MANAGEMENT LLC1,333,8000.06%0.66%
3.)PENTWATER CAPITAL MANAGEMENT LP630,2050.59%0.31%
4.)SANDELL ASSET MANAGEMENT CORP620,0003.88%0.31%
5.)ARNHOLD & S BLEICHROEDER ADVISERS LLC451,3000.08%0.22%
6.)MADISON SQUARE INVESTORS LLC324,8850.14%0.16%
7.)HUDSON BAY CAPITAL MANAGEMENT LP323,7310.72%0.16%
8.)NOMURA HOLDINGS INC126,5340.01%0.06%
9.)COWEN GROUP INC117,0000.36%0.06%
10.)OPPENHEIMER FUNDS INC105,0000.01%0.05%
11.)CHESAPEAKE PARTNERS MANAGEMENT CO INC MD100,0000.26%0.05%
12.)MOODY LYNN & CO 94,8550.74%0.05%
13.)ANDRA AP FONDEN77,1000.10%0.04%
14.)S&T BANK PA74,4440.75%0.04%
15.)FJARDE AP FONDEN (THE FOURTH SWEDISH NATIONAL PENSIONFUND)68,3910.06%0.03%
16.)TD SECURITIES (USA) LLC64,6940.07%0.03%
17.)LMR MASTER FUND LTD51,6520.41%0.03%
18.)BRENCOURT ADVISORS LLC45,4450.85%0.02%
19.)LONGFELLOW INVESTMENT MANAGEMENT CO LTD PARTNERSHIP35,0001.20%0.02%
20.)WESTPAC BANKING CORP33,8850.03%0.02%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)CITIGROUP INC653,300CALL0.03%0.33%
2.)JANUS CAPITAL MANAGEMENT LLC528,5000.03%0.26%
3.)MOODY ALDRICH PARTNERS LLC402,7023.48%0.20%
4.)MADISON SQUARE INVESTORS LLC211,0270.09%0.11%
5.)GW CAPITAL MANAGEMENT LLC202,6230.26%0.10%
6.)BBT CAPITAL MANAGEMENT INC162,8660.37%0.08%
7.)TIMBER HILL LLC144,200CALL0.01%0.07%
8.)BP PLC130,0000.35%0.06%
9.)DNB NOR ASSET MANAGEMENT AS108,6340.11%0.05%
10.)S&T BANK PA83,8671.01%0.04%
11.)GARGOYLE SERVICES LLC79,0451.66%0.04%
12.)TIMBER HILL LLC45,700PUT0.00%0.02%
13.)COVINGTON CAPITAL MANAGEMENT41,8700.26%0.02%
14.)MITSUBISHI UFJ SECURITIES CO LTD38,1000.67%0.02%
15.)NEW JERSEY BETTER EDUCATIONAL SAVINGS TRUST34,0000.99%0.02%
16.)LUMINUS MANAGEMENT LLC32,7390.12%0.02%
17.)SPOT TRADING LLC31,600CALL0.02%0.02%
18.)AXA FINANCIAL INC23,7000.01%0.01%
19.)HANSEATIC MANAGEMENT SERVICES INC23,0000.59%0.01%
20.)COVINGTON CAPITAL MANAGEMENT14,3000.04%0.01%