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ALEXION PHARMACEUTICALS INC
ALEXION PHARMACEUTICALS INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q3)
Portfolio Summary: 534 Institutional holders with a total value of $33,855,682,195.
#
Manager Name
Shares
Value ($)
%
Options
Notes
51 FIL Ltd 609,111 95,259,000 0.28%
52 GUGGENHEIM CAPITAL LLC 608,959 95,236,000 0.28%
53 Sumitomo Mitsui Trust Group, Inc. 599,733 93,792,000 0.28%
54 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 580,591 90,799,000 0.27%
55 FRANKLIN RESOURCES INC 578,555 90,481,000 0.27%
56 ALLIANCEBERNSTEIN L.P. 555,176 86,824,000 0.26%
57 COLUMBUS CIRCLE INVESTORS 554,674 86,745,000 0.26%
58 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 549,036 85,864,000 0.25%
59 TD ASSET MANAGEMENT INC 534,559 83,600,000 0.25%
60 STRS OHIO 524,509 82,027,000 0.24%
61 LOOMIS SAYLES & CO L P 489,567 76,564,000 0.23%
62 D. E. Shaw & Co., Inc. 488,469 76,392,000 0.23%
63 CREDIT SUISSE AG/ 487,969 76,315,000 0.23%
64 Mitsubishi UFJ Trust & Banking Corp 464,917 72,708,000 0.21%
65 TEACHERS ADVISORS, LLC 453,885 70,983,000 0.21%
66 HealthCor Management, L.P. 450,000 70,376,000 0.21%
67 CORNERSTONE CAPITAL MANAGEMENT LLC 444,539 69,521,000 0.21%
68 Alyeska Investment Group, L.P. 439,939 68,802,000 0.20%
69 FEDERATED HERMES, INC. 438,861 68,634,000 0.20%
70 Swiss National Bank 400,041 62,562,000 0.18%
71 MANUFACTURERS LIFE INSURANCE COMPANY, THE 396,128 61,950,000 0.18%
72 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 393,478 61,536,000 0.18%
73 CLEARBRIDGE, LLC 386,274 60,409,000 0.18%
74 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 381,749 59,702,000 0.18%
75 TWO SIGMA INVESTMENTS, LP 363,912 56,912,000 0.17%
76 PICTET ASSET MANAGEMENT LTD 359,086 56,158,000 0.17%
77 PARAMETRIC PORTFOLIO ASSOCIATES LLC 339,411 53,080,000 0.16%
78 STIFEL FINANCIAL CORP 338,693 52,990,000 0.16%
79 PRUDENTIAL FINANCIAL INC 335,808 52,518,000 0.16%
80 Mizuho Trust & Banking Co., Ltd. 334,074 52,246,000 0.15%
81 FAYEZ SAROFIM & CO 332,262 52,091,000 0.15%
82 Calamos Advisors LLC 329,734 51,567,000 0.15%
83 RHUMBLINE ADVISERS 322,218 50,392,000 0.15%
84 PRINCIPAL FINANCIAL GROUP INC 309,565 48,413,000 0.14%
85 BlackRock Japan Co. Ltd 307,307 48,060,000 0.14%
86 Nationwide Fund Advisors 297,098 46,463,000 0.14%
87 ZEVENBERGEN CAPITAL INVESTMENTS LLC 295,395 46,197,000 0.14%
88 RUSSELL FRANK CO/ 292,969 45,812,000 0.14%
89 DIMENSIONAL FUND ADVISORS LP 283,596 44,335,000 0.13%
90 ADAGE CAPITAL PARTNERS GP, L.L.C. 280,063 43,799,000 0.13%
91 SUSQUEHANNA INTERNATIONAL GROUP, LLP 278,500 43,555,000 0.13% Call
92 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 277,047 43,327,000 0.13%
93 Korea Investment CORP 251,791 39,377,000 0.12%
94 GLG Partners LP 230,176 35,997,000 0.11%
95 VICTORY CAPITAL MANAGEMENT INC 230,139 35,991,000 0.11%
96 ProShare Advisors LLC 227,171 35,527,000 0.10%
97 Retirement Systems of Alabama 223,583 34,966,000 0.10%
98 Zweig-DiMenna Associates LLC 214,946 33,615,000 0.10%
99 SEI INVESTMENTS CO 213,453 33,381,000 0.10%
100 EATON VANCE MANAGEMENT 211,965 33,149,000 0.10%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.