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Alexion Pharmaceuticals Inc (NASDAQ:ALXN)

Delayed Data
As of Mar 29
 +2.19 / +1.85%
Today’s Change
Today|||52-Week Range
Institutional investors hold a majority ownership of ALXN through the 99.98% of the outstanding shares that they control. This interest is also higher than at almost any other company in the Biotechnology industry. Last, during the quarter ended December 2016, these large investors purchased a net $3.0 million shares.
Mutual fund holders62.65%
Individual stakeholders4.05%
Other institutional37.32%

Largest Quarterly Institutional

Latest Institutional Activity

12/31/2016FIDELITY MANAGEMENT & RESEARCH C...  Bought 3.1 Million shares of Alexion Pharmaceuticals I...
12/31/2016WINSLOW CAPITAL MANAGEMENT LLC  Bought 2.1 Million shares of Alexion Pharmaceuticals I...
12/31/2016T. ROWE PRICE ASSOCIATES, INC.  Bought 1.7 Million shares of Alexion Pharmaceuticals I...

Top 10 Owners of Alexion Pharmaceuticals Inc

Total value ($)Shares
bought / sold
Fidelity Management & Research Co...12.06%27,090,8643,555,675,900+3,114,032+12.99%
T. Rowe Price Associates, Inc.9.39%21,087,4202,767,723,875+1,722,986+8.90%
The Vanguard Group, Inc.6.25%14,034,1631,841,983,894+297,620+2.17%
BlackRock Fund Advisors5.16%11,599,7761,522,470,600+481,389+4.33%
SSgA Funds Management, Inc.4.71%10,579,9291,388,615,681+501,209+4.97%
Jennison Associates LLC3.68%8,273,3851,085,881,781+1,136,150+15.92%
Capital Research & Management Co....3.25%7,290,400956,865,000-8,014,731-52.37%
Baker Bros. Advisors LP2.91%6,543,295858,807,46900.00%
Columbia Management Investment Ad...2.49%5,600,122735,016,013+931,671+19.96%
Sands Capital Management LLC2.49%5,585,268733,066,425+339,516+6.47%

Top 10 Mutual Funds Holding Alexion Pharmaceuticals Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
T Rowe Price Growth Stock Fund2.28%5,130,098673,325,363+1,613,219+45.87%
Vanguard Total Stock Market Index...2.05%4,609,570605,006,063+97,346+2.16%
Fidelity Select Biotechnology Por...2.02%4,529,555594,504,094-236,200-4.96%
American Funds Growth Fund of Ame...1.48%3,332,889437,441,681-2,524,000-43.09%
Vanguard 500 Index Fund1.46%3,278,092430,249,575+85,824+2.69%
T Rowe Price Blue Chip Growth Fun...1.28%2,884,950378,649,688-205,750-6.66%
Fidelity OTC Portfolio1.27%2,855,489374,782,931-114,400-3.85%
Harbor Capital Appreciation Fund1.21%2,707,177355,316,981+125,622+4.87%
SPDR S&P 500 ETF1.14%2,566,932336,909,825-12,740-0.49%
iShares Nasdaq Biotechnology ETF1.13%2,527,754331,767,713-36,895-1.44%