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Institutional Holdings of AETNA INC. (AET) on 12/31/2011

1. Company Information

Company/StockAETNA INC. (stock symbol: AET)
Funds Ownership505 out of total 3028 funds (17%) own this stock
Funds own total 305,159,951 shares, 87.09% of all outstanding shares
Funds SOLD -12,204,735 shares (-3.85%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)STATE STREET CORP22,532,335Cut -2.90%0.17%6.43%
2.)CAPITAL WORLD INVESTORS17,186,400Cut -16.10%0.28%4.90%
3.)VANGUARD GROUP INC14,587,323Cut -0.50%0.10%4.16%
4.)FMR LLC11,288,780Added 23.76%0.10%3.22%
5.)BLACKROCK ADVISORS LLC9,540,659Cut -9.58%0.45%2.72%
6.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA9,495,720Added 4.13%0.10%2.71%
7.)PUTNAM INVESTMENT MANAGEMENT LLC7,445,682Added 3.18%0.94%2.12%
8.)LSV ASSET MANAGEMENT7,366,110Added 4.55%0.96%2.10%
9.)OPPENHEIMER FUNDS INC7,291,449Added 4.66%0.57%2.08%
10.)WELLINGTON MANAGEMENT CO LLP6,431,363Cut -12.95%0.11%1.84%
11.)ORBIS HOLDINGS LTD6,384,705Cut -27.40%2.97%1.82%
12.)INVESCO LTD5,693,347Added 1.73%0.14%1.62%
13.)ARONSON & JOHNSON & ORTIZ LP5,004,000Added 6.55%1.12%1.43%
14.)BANK OF NEW YORK MELLON CORP4,767,788Added 16.14%0.08%1.36%
15.)EPOCH INVESTMENT PARTNERS INC4,694,104Added 17.40%1.44%1.34%
16.)BLACKROCK GROUP LTD4,672,869Cut -3.81%0.17%1.33%
17.)ALGER FRED MANAGEMENT INC4,276,832Cut -7.40%1.30%1.22%
18.)GOLDMAN SACHS GROUP INC4,269,523Cut -7.90%0.09%1.22%
19.)HEALTHCOR MANAGEMENT LP4,100,000Cut -18.00%6.52%1.17%
20.)NORTHERN TRUST CORP4,089,436Cut -2.91%0.09%1.17%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)1346049 ONTARIO LTD99,980Cut -50.35%8.68%0.03%
2.)HEALTHCOR MANAGEMENT LP4,100,000Cut -18.00%6.52%1.17%
3.)OLD MUTUAL CAPITAL INC760,000New6.27%0.22%
4.)ACCIPITER CAPITAL MANAGEMENT LLC192,692Added 0.78%6.26%0.05%
5.)JHL CAPITAL GROUP LLC691,300Cut -30.87%4.17%0.20%
6.)ARDSLEY ADVISORY PARTNERS450,000Added 20.00%3.97%0.13%
7.)MADISON STREET PARTNERS LLC128,862Cut -8.65%3.57%0.04%
8.)ORBIS HOLDINGS LTD6,384,705Cut -27.40%2.97%1.82%
9.)POPLAR FOREST CAPITAL LLC216,479Added 1.19%2.91%0.06%
10.)ORBIMED ADVISORS LLC2,036,000Added 9.82%2.82%0.58%
11.)ORIGIN ASSET MANAGEMENT LLP1,158,156Added 19.93%2.80%0.33%
12.)SAMLYN CAPITAL LLC1,997,892Added 44.10%2.69%0.57%
13.)CI GLOBAL HOLDINGS INC690,000Added 29.94%2.67%0.20%
14.)MT LUCAS MANAGEMENT CORP218,472Added 3.67%2.60%0.06%
15.)CAMBIAR INVESTORS LLC3,854,080Added 41.70%2.58%1.10%
16.)BRC INVESTMENT MANAGEMENT LLC304,887Cut -16.69%2.57%0.09%
17.)LYRICAL ASSET MANAGEMENT LP172,060New2.42%0.05%
18.)ARCHIPEL ASSET MANAGEMENT AB182,470New2.28%0.05%
19.)HAMBRECHT & QUIST CAPITAL MANAGEMENT LLC256,141Cut -16.93%2.27%0.07%
20.)PAR CAPITAL MANAGEMENT INC1,250,100Added 99.25%2.01%0.36%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)JANUS CAPITAL MANAGEMENT LLC1,531,2000.08%0.44%
2.)FIR TREE INC837,2000.84%0.24%
3.)OLD MUTUAL CAPITAL INC760,0006.27%0.22%
4.)ZWEIG DIMENNA PARTNERS L P610,8701.49%0.17%
5.)MADISON SQUARE INVESTORS LLC587,4450.26%0.17%
6.)SEMINOLE MANAGEMENT CO INC402,2900.88%0.11%
7.)WADDELL & REED FINANCIAL INC274,1000.03%0.08%
8.)ARCHIPEL ASSET MANAGEMENT AB182,4702.28%0.05%
9.)LYRICAL ASSET MANAGEMENT LP172,0602.42%0.05%
10.)WESTPAC BANKING CORP170,8130.14%0.05%
11.)ANDRA AP FONDEN166,7000.23%0.05%
12.)WEISS GEORGE A156,8010.22%0.04%
13.)GREAT WEST LIFE ASSURANCE CO CAN 132,7000.04%0.04%
14.)FJARDE AP FONDEN (THE FOURTH SWEDISH NATIONAL PENSIONFUND)131,7280.13%0.04%
15.)MAYO INVESTMENT ADVISERS LLC123,4740.29%0.04%
16.)ZURCHER KANTONALBANK (ZURICH CANTONALBANK)123,0070.24%0.04%
17.)TD SECURITIES (USA) LLC116,2840.13%0.03%
18.)MARTINGALE ASSET MANAGEMENT L P114,3050.30%0.03%
19.)1798 GLOBAL PARTNERS (CAYMAN ISLANDS) LTD106,1000.42%0.03%
20.)DEERFIELD MANAGEMENT CO NY100,000CALL0.22%0.03%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)WESTFIELD CAPITAL MANAGEMENT CO LLC4,256,4411.23%1.21%
2.)AXA FINANCIAL INC1,766,0050.42%0.50%
3.)ELM RIDGE MANAGEMENT LLC853,8261.48%0.24%
4.)IONIC CAPITAL MANAGEMENT LLC750,000PUT0.47%0.21%
5.)JANUS CAPITAL MANAGEMENT LLC723,5000.03%0.21%
6.)IRIDIAN ASSET MANAGEMENT LLC CT640,9920.45%0.18%
7.)BRYN MAWR CAPITAL MANAGEMENT INC600,0001.83%0.17%
8.)HOPLITE CAPITAL MANAGEMENT LLC396,8000.81%0.11%
9.)MM CAPITAL LLC375,500PUT0.33%0.11%
10.)TIMBER HILL LLC359,200CALL0.03%0.10%
11.)TIMBER HILL LLC314,700PUT0.03%0.09%
12.)MADISON SQUARE INVESTORS LLC235,1460.10%0.07%
13.)CR INTRINSIC INVESTORS LLC232,0000.60%0.07%
14.)KINGDON CAPITAL MANAGEMENT LLC221,0000.30%0.06%
15.)DECADE CAPITAL MANAGEMENT LLC197,8291.13%0.06%
16.)MOORE CAPITAL MANAGEMENT LLC190,5820.23%0.05%
17.)MM CAPITAL LLC170,6350.15%0.05%
18.)DYNAMIC CAPITAL MANAGEMENT LTD141,3000.98%0.04%
19.)ING INVESTMENT MANAGEMENT (EUROPE) BV132,3640.05%0.04%
20.)LOWE BROCKENBROUGH & CO INC130,2431.18%0.04%