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

Institutional Holders (2017Q2)
Portfolio Summary: 611 Institutional holders with a total value of $26,914,209,971.
#
Manager Name
Shares
Value ($)
%
Options
Notes
51 PARAMETRIC PORTFOLIO ASSOCIATES LLC 654,263 79,604,000 0.30%
52 JENNISON ASSOCIATES LLC 650,300 79,122,000 0.29%
53 Sumitomo Mitsui Trust Group, Inc. 634,410 77,189,000 0.29%
54 FEDERATED HERMES, INC. 630,864 76,757,000 0.29%
55 LONDON CO OF VIRGINIA 620,834 75,537,000 0.28%
56 PICTET ASSET MANAGEMENT LTD 767,580 75,246,000 0.28%
57 SUSQUEHANNA INTERNATIONAL GROUP, LLP 596,400 72,564,000 0.27% Call
58 NEW YORK STATE COMMON RETIREMENT FUND 566,549 68,932,000 0.26%
59 ALLIANCEBERNSTEIN L.P. 565,114 68,757,000 0.26%
60 GUGGENHEIM CAPITAL LLC 555,343 67,569,000 0.25%
61 STRS OHIO 533,182 64,872,000 0.24%
62 CREDIT SUISSE AG/ 508,738 61,899,000 0.23%
63 CAPITAL FUND MANAGEMENT S.A. 478,692 58,242,000 0.22%
64 Rock Springs Capital Management LP 463,000 56,333,000 0.21%
65 MILLENNIUM MANAGEMENT LLC 453,747 55,207,000 0.21%
66 Mitsubishi UFJ Trust & Banking Corp 452,817 55,094,000 0.20%
67 MILLER VALUE PARTNERS, LLC 450,725 54,840,000 0.20%
68 BARCLAYS PLC 450,200 54,776,000 0.20% Put
69 CITADEL ADVISORS LLC 448,000 54,508,000 0.20% Call
70 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 447,991 54,507,000 0.20%
71 Point72 Asset Management, L.P. 422,600 51,418,000 0.19%
72 TOBAM 420,815 51,201,000 0.19%
73 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 404,755 49,246,000 0.18%
74 UBS Group AG 400,604 48,741,000 0.18%
75 Tourbillon Capital Partners, L.P. 400,000 48,668,000 0.18% Call
76 TD ASSET MANAGEMENT INC 397,087 48,314,000 0.18%
77 SUSQUEHANNA INTERNATIONAL GROUP, LLP 395,174 48,080,000 0.18%
78 RHUMBLINE ADVISERS 392,355 47,738,000 0.18%
79 PRUDENTIAL FINANCIAL INC 387,488 47,146,000 0.18%
80 EULAV Asset Management 387,000 47,086,000 0.17%
81 State of Tennessee, Department of Treasury 380,624 46,311,000 0.17%
82 TWO SIGMA ADVISERS, LP 378,727 46,080,000 0.17%
83 STATE OF MICHIGAN RETIREMENT SYSTEM 373,778 45,478,000 0.17%
84 DIMENSIONAL FUND ADVISORS LP 364,268 44,323,000 0.16%
85 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 363,413 44,216,000 0.16%
86 CANADA PENSION PLAN INVESTMENT BOARD 351,796 42,803,000 0.16%
87 ADAGE CAPITAL PARTNERS GP, L.L.C. 349,881 42,570,000 0.16%
88 Asset Management One Co., Ltd. 345,973 42,108,000 0.16%
89 PRINCIPAL FINANCIAL GROUP INC 335,525 40,823,000 0.15%
90 Calamos Advisors LLC 334,488 40,697,000 0.15%
91 WESTFIELD CAPITAL MANAGEMENT CO LP 331,270 40,306,000 0.15%
92 AQR CAPITAL MANAGEMENT LLC 328,408 39,957,000 0.15%
93 FIRST TRUST ADVISORS LP 327,953 39,902,000 0.15%
94 Allianz Asset Management GmbH 327,447 39,885,000 0.15%
95 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 325,500 39,604,000 0.15%
96 BARCLAYS PLC 323,500 39,360,000 0.15% Call
97 D. E. Shaw & Co., Inc. 289,584 35,234,000 0.13%
98 VAN ECK ASSOCIATES CORP 284,126 34,570,000 0.13%
99 AMF Tjanstepension AB 282,644 34,268,000 0.13%
100 JANE STREET GROUP, LLC 273,400 33,265,000 0.12% Call
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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.