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Institutional Holdings of MAGELLAN HEALTH SERVICES, INC. (MGLN) on 12/31/2011

1. Company Information

Company/StockMAGELLAN HEALTH SERVICES, INC. (stock symbol: MGLN)
Funds Ownership177 out of total 3028 funds (6%) own this stock
Funds own total 26,651,744 shares, 83.36% of all outstanding shares
Funds SOLD -2,061,918 shares (-7.18%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)HEALTHCOR MANAGEMENT LP2,525,000Cut -15.83%4.71%7.90%
2.)VANGUARD GROUP INC1,817,386Cut -2.36%0.01%5.68%
3.)BLACKROCK FUND ADVISORS1,253,370Cut -5.68%0.03%3.92%
4.)TIMESSQUARE CAPITAL MANAGEMENT LLC1,244,217Added 12.07%0.48%3.89%
5.)ACADIAN ASSET MANAGEMENT LLC1,148,211Cut -7.61%0.53%3.59%
6.)RENAISSANCE TECHNOLOGIES LLC1,114,699Added 2.91%0.23%3.49%
7.)RS INVESTMENT MANAGEMENT CO LLC927,368Cut -30.83%0.44%2.90%
8.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA844,415Added 1.59%0.01%2.64%
9.)LSV ASSET MANAGEMENT769,160Cut -7.46%0.12%2.41%
10.)STATE STREET CORP760,421Cut -9.29%0.01%2.38%
11.)ROYCE & ASSOCIATES LLC709,324Cut -15.20%0.12%2.22%
12.)AMERIPRISE FINANCIAL INC708,792Cut -7.34%0.03%2.22%
13.)MUNDER CAPITAL MANAGEMENT629,831Cut -8.40%0.32%1.97%
14.)DIMENSIONAL FUND ADVISORS INC597,604Added 0.77%0.04%1.87%
15.)KESTREL INVESTMENT MANAGEMENT CORP489,500Cut -1.19%3.35%1.53%
16.)PRINCIPAL FINANCIAL GROUP INC444,121Cut -20.13%0.07%1.39%
17.)NORTHERN TRUST CORP424,882Cut -7.68%0.01%1.33%
18.)CAMBIAR INVESTORS LLC407,861Cut -4.15%0.32%1.28%
19.)CLEARBRIDGE ADVISORS LLC375,354Cut -6.40%0.04%1.17%
20.)PARADIGM CAPITAL MANAGEMENT INC NY364,484Cut 0.00%1.09%1.14%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)HEALTHCOR MANAGEMENT LP2,525,000Cut -15.83%4.71%7.90%
2.)KESTREL INVESTMENT MANAGEMENT CORP489,500Cut -1.19%3.35%1.53%
3.)GREAT NORTHERN ASSET MANAGEMENT INC28,302Added 5.13%2.55%0.09%
4.)WALTHAUSEN & CO LLC229,505Added 20.18%2.14%0.72%
5.)WEST FACE CAPITAL INC98,000Cut -83.35%1.79%0.31%
6.)MESIROW FINANCIAL INVESTMENT MANAGEMENT121,601Added 14.38%1.78%0.38%
7.)NETOLS ASSET MANAGEMENT INC178,821Cut -1.86%1.25%0.56%
8.)PARADIGM CAPITAL MANAGEMENT INC NY364,484Cut 0.00%1.09%1.14%
9.)OLD MUTUAL ASSET MANAGERS UK LTD28,464Cut -28.02%1.02%0.09%
10.)PUNCH & ASSOCIATES INVESTMENT MANAGEMENT INC62,527Cut -1.59%0.81%0.20%
11.)FOX ASSET MANAGEMENT LLC108,418Cut -10.88%0.80%0.34%
12.)PARTNER INVESTMENT MANAGEMENT LP74,181New0.66%0.23%
13.)ACADIAN ASSET MANAGEMENT LLC1,148,211Cut -7.61%0.53%3.59%
14.)TIMESSQUARE CAPITAL MANAGEMENT LLC1,244,217Added 12.07%0.48%3.89%
15.)RS INVESTMENT MANAGEMENT CO LLC927,368Cut -30.83%0.44%2.90%
16.)LEUTHOLD WEEDEN CAPITAL MANAGEMENT LLC176,187Cut -29.56%0.42%0.55%
17.)PARTNER FUND MANAGEMENT LP106,867New0.35%0.33%
18.)PALISADE CAPITAL MANAGEMENT LLC NJ180,075Cut -33.19%0.33%0.56%
19.)CAMBIAR INVESTORS LLC407,861Cut -4.15%0.32%1.28%
20.)MUNDER CAPITAL MANAGEMENT629,831Cut -8.40%0.32%1.97%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)PARTNER FUND MANAGEMENT LP106,8670.35%0.33%
2.)PARTNER INVESTMENT MANAGEMENT LP74,1810.66%0.23%
3.)THOMSON HORSTMANN & BRYANT INC71,3000.25%0.22%
4.)TWO SIGMA INVESTMENTS LLC69,8950.04%0.22%
5.)ROBECO INSTITUTIONAL ASSET MANAGEMENT BV54,1540.04%0.17%
6.)WESTPAC BANKING CORP33,3000.03%0.10%
7.)AXA29,7000.01%0.09%
8.)TWO SIGMA ADVISERS LLC14,5000.04%0.05%
9.)EULAV ASSET MANAGEMENT14,0000.05%0.04%
10.)HBK INVESTMENTS L P13,8050.02%0.04%
11.)TUDOR INVESTMENT CORP ET AL11,1000.04%0.03%
12.)ZACKS INVESTMENT MANAGEMENT8,8780.03%0.03%
13.)GSA CAPITAL PARTNERS LLP8,3810.07%0.03%
14.)BNP PARIBAS ARBITRAGE SA6,9480.00%0.02%
15.)BNP PARIBAS ARBITRAGE SNC6,9480.00%0.02%
16.)SUNRISE PARTNERS LLC CT6,6000.04%0.02%
17.)MADISON SQUARE INVESTORS LLC5,8310.00%0.02%
18.)RAPTOR CAPITAL MANAGEMENT LP5,5720.15%0.02%
19.)VISIUM ASSET MANAGEMENT LP5,5380.01%0.02%
20.)BB&T CORP4,2150.01%0.01%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)HENNESSY ADVISORS INC107,4001.00%0.34%
2.)PENN CAPITAL MANAGEMENT CO INC89,0160.20%0.28%
3.)GOLDEN CAPITAL MANAGEMENT LLC35,1620.10%0.11%
4.)JENNISON ASSOCIATES LLC22,8970.00%0.07%
5.)GW CAPITAL MANAGEMENT LLC20,8390.03%0.07%
6.)EULAV ASSET MANAGEMENT LLC14,0000.05%0.04%
7.)CHICAGO EQUITY PARTNERS LLC13,9000.03%0.04%
8.)HUTCHIN HILL CAPITAL LP9,6000.09%0.03%
9.)DEAN C H & ASSOCIATES INC8,4910.22%0.03%
10.)SUSQUEHANNA INTERNATIONAL GROUP LLP7,000CALL0.00%0.02%
11.)KNIGHT CAPITAL GROUP INC6,4180.01%0.02%
12.)SUSQUEHANNA INTERNATIONAL GROUP LLP6,100PUT0.00%0.02%
13.)PETRUS TRUST COMPANY LTA5,5000.07%0.02%
14.)MADISON SQUARE INVESTORS LLC5,2940.00%0.02%
15.)LIGHTBOX CAPITAL MANAGEMENT LLC4,9290.30%0.02%
16.)HANSEATIC MANAGEMENT SERVICES INC1,1600.04%0.00%
17.)HABERER REGISTERED INVESTMENT ADVISOR INC4000.00%0.00%
18.)SHAPIRO ROBERT N3900.01%0.00%
19.)SANDERS MORRIS HARRIS GROUP INC1450.00%0.00%
20.)CTC FUND MANAGEMENT LLC1000.00%0.00%