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ALXN
- As of 05/12/24, 06:37:00 PM: 203 Insider Transactions.
Sector:
Healthcare
Industry:
Biotechnology
Prev Close:
$125.30
Avg Vol(3m):
1,882,510
P/E:
189.50
EPS:
0.66
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Insider Transactions for ALXN
Buy/Sell*
Filed Date
Subject
Symbol
Acquirer
Pct Owned
Details
S
2020-02-14 13:29:49.0
ALEXION PHARMACEUTICALS
ALXN
PRICE T ROWE ASSOCIATES INC
5.4%
view
B
2020-02-13 10:36:43.0
ALEXION PHARMACEUTICALS
ALXN
STATE STREET CORP
5.13%
view
B
2020-02-12 11:01:06.0
ALEXION PHARMACEUTICALS
ALXN
VANGUARD GROUP INC
7.57%
view
S
2020-02-05 11:26:05.0
ALEXION PHARMACEUTICALS
ALXN
BlackRock Inc
7.2%
view
S
2020-01-10 10:25:37.0
ALEXION PHARMACEUTICALS
ALXN
FMR LLC
6.69%
view
S
2019-02-14 13:48:11.0
ALEXION PHARMACEUTICALS
ALXN
PRICE T ROWE ASSOCIATES INC
7.9%
view
S
2019-02-12 12:10:43.0
ALEXION PHARMACEUTICALS
ALXN
STATE STREET CORP
4.9%
view
B
2019-02-11 10:30:45.0
ALEXION PHARMACEUTICALS
ALXN
VANGUARD GROUP INC
7.27%
view
S
2019-02-04 10:09:24.0
ALEXION PHARMACEUTICALS
ALXN
BlackRock Inc
7.3%
view
B
2018-11-13 10:38:14.0
ALEXION PHARMACEUTICALS
ALXN
FMR LLC
11.122%
view
B
2018-06-11 10:19:16.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.0%
view
S
2018-02-14 13:58:26.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
9.4%
view
B
2018-02-13 13:11:18.0
ALEXION PHARMACEUTICALS INC
ALXN
STATE STREET CORP
5.19%
view
S
2018-02-13 09:33:16.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
7.926%
view
B
2018-02-12 09:07:12.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
6.8%
view
S
2018-01-29 16:38:00.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
8.1%
view
B
2017-06-09 12:27:32.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.0%
view
B
2017-02-14 10:42:13.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
12.564%
view
S
2017-02-13 16:37:49.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
3.2%
view
B
2017-02-08 19:52:08.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
6.25%
view
S
2017-02-06 13:31:02.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
9.4%
view
B
2017-01-19 17:23:56.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
8.3%
view
S
2016-09-09 10:44:00.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
6.8%
view
B
2016-08-10 10:57:16.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
10.011%
view
B
2016-02-12 17:36:05.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
12.2%
view
S
2016-02-12 08:49:30.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
6.621%
view
B
2016-02-12 08:17:30.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
12.5%
view
B
2016-02-10 10:34:59.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
5.75%
view
B
2016-02-10 10:15:52.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.9%
view
B
2015-02-13 13:57:56.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
12.2%
view
B
2015-02-13 12:24:07.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.1%
view
B
2015-02-13 09:55:56.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
11.168%
view
B
2015-02-11 13:49:11.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
5.37%
view
B
2015-02-06 17:52:08.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.8%
view
B
2014-12-10 13:32:44.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.0%
view
B
2014-02-14 06:45:03.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
10.052%
view
B
2014-02-12 21:38:25.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
12.1%
view
B
2014-02-07 13:46:42.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
7.5%
view
S
2014-02-07 10:32:50.0
ALEXION PHARMACEUTICALS INC
ALXN
PRUDENTIAL FINANCIAL INC
n/a
view
S
2014-02-07 09:00:13.0
ALEXION PHARMACEUTICALS INC
ALXN
WESTFIELD CAPITAL MANAGEMENT CO LP
0.0%
view
S
2014-02-06 15:58:03.0
ALEXION PHARMACEUTICALS INC
ALXN
JENNISON ASSOCIATES LLC
4.3%
view
S
2014-01-28 10:57:38.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.2%
view
B
2013-03-08 12:42:05.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
10.8%
view
S
2013-02-14 13:36:56.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
7.696%
view
B
2013-02-13 15:04:42.0
ALEXION PHARMACEUTICALS INC
ALXN
PRUDENTIAL FINANCIAL INC
5.4%
view
B
2013-02-12 16:37:48.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
9.5%
view
B
2013-02-11 15:08:20.0
ALEXION PHARMACEUTICALS INC
ALXN
JENNISON ASSOCIATES LLC
5.2%
view
B
2013-02-08 10:54:35.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
0.0%
view
B
2013-02-06 09:54:37.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.85%
view
B
2012-02-14 12:03:18.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
11.49%
view
B
2012-02-13 21:29:59.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
7.2%
view
B
2012-02-13 12:28:24.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
0.0%
view
S
2012-02-13 12:28:19.0
ALEXION PHARMACEUTICALS INC
ALXN
Invus Public Equities
4.0%
view
B
2012-02-09 09:58:44.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
5.35%
view
S
2011-09-09 16:55:12.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
4.95%
view
S
2011-07-11 13:49:25.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
9.653%
view
B
2011-02-11 13:46:36.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
5.1%
view
S
2011-02-10 15:32:32.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
6.7%
view
S
2011-02-10 14:36:02.0
ALEXION PHARMACEUTICALS INC
ALXN
COLUMBIA WANGER ASSET MANAGEMENT LLC
n/a
view
B
2011-02-03 12:40:02.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.03%
view
B
2010-02-16 12:45:45.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
14.791%
view
S
2010-02-12 13:02:30.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
7.1%
view
S
2010-02-09 14:50:20.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
4.68%
view
S
2010-02-09 12:00:15.0
ALEXION PHARMACEUTICALS INC
ALXN
COLUMBIA WANGER ASSET MANAGEMENT LP
5.2%
view
B
2010-01-29 14:11:50.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
5.03%
view
S
2009-02-17 09:53:28.0
ALEXION PHARMACEUTICALS INC
LAXN
DAVIDSON KEMPNER PARTNERS
0.0%
view
S
2009-02-11 12:49:41.0
ALEXION PHARMACEUTICALS INC
LAXN
PRICE T ROWE ASSOCIATES INC
8.6%
view
B
2009-02-05 10:25:29.0
ALEXION PHARMACEUTICALS INC
LAXN
COLUMBIA WANGER ASSET MANAGEMENT LP
5.25%
view
S
2009-02-04 09:37:30.0
ALEXION PHARMACEUTICALS INC
LAXN
WESTFIELD CAPITAL MANAGEMENT CO LP
4.84%
view
S
2008-05-08 21:51:00.0
ALEXION PHARMACEUTICALS INC
LAXN
MILLENCO
4.9%
view
B
2008-03-10 14:33:46.0
ALEXION PHARMACEUTICALS INC
LAXN
PRICE T ROWE ASSOCIATES INC
10.4%
view
B
2008-02-25 11:36:11.0
ALEXION PHARMACEUTICALS INC
LAXN
DAVIDSON KEMPNER PARTNERS
5.1%
view
S
2008-02-14 16:18:23.0
ALEXION PHARMACEUTICALS INC
LAXN
FMR LLC
n/a
view
S
2008-02-14 08:21:53.0
ALEXION PHARMACEUTICALS INC
LAXN
DAVIDSON KEMPNER PARTNERS
4.6%
view
S
2008-02-13 18:46:57.0
ALEXION PHARMACEUTICALS INC
LAXN
BROOKSIDE CAPITAL PARTNERS FUND LP
2.71%
view
B
2008-02-13 16:29:52.0
ALEXION PHARMACEUTICALS INC
LAXN
CITADEL INVESTMENT GROUP LLC
3.2%
view
S
2008-02-13 15:21:42.0
ALEXION PHARMACEUTICALS INC
LAXN
SECTORAL ASSET MANAGEMENT INC
4.0%
view
S
2008-02-12 21:27:06.0
ALEXION PHARMACEUTICALS INC
LAXN
PRICE T ROWE ASSOCIATES INC
7.3%
view
S
2008-02-11 15:23:37.0
ALEXION PHARMACEUTICALS INC
LAXN
ADAGE CAPITAL PARTNERS GP LLC
2.4%
view
B
2008-01-10 09:19:29.0
ALEXION PHARMACEUTICALS INC
LAXN
WESTFIELD CAPITAL MANAGEMENT CO LLC
7.65%
view
B
2007-07-27 17:14:26.0
ALEXION PHARMACEUTICALS INC
LAXN
MILLENCO
6.9%
view
B
2007-05-14 12:12:44.0
ALEXION PHARMACEUTICALS INC
LAXN
Invus Public Equities
5.12%
view
B
2007-04-09 13:57:33.0
ALEXION PHARMACEUTICALS INC
LAXN
MILLENCO
5.1%
view
B
2007-04-02 17:07:48.0
ALEXION PHARMACEUTICALS INC
LAXN
ADAGE CAPITAL PARTNERS GP LLC
5.5%
view
B
2007-03-28 16:14:26.0
ALEXION PHARMACEUTICALS INC
LAXN
DAVIDSON KEMPNER PARTNERS
5.0%
view
S
2007-03-09 15:27:27.0
ALEXION PHARMACEUTICALS INC
LAXN
BlackRock Inc
4.61%
view
S
2007-02-14 16:24:55.0
ALEXION PHARMACEUTICALS INC
LAXN
FMR CORP
n/a
view
S
2007-02-14 11:23:20.0
ALEXION PHARMACEUTICALS INC
LAXN
D
3.3%
view
B
2007-02-13 15:02:55.0
ALEXION PHARMACEUTICALS INC
LAXN
BlackRock Inc
5.19%
view
B
2007-02-13 14:26:41.0
ALEXION PHARMACEUTICALS INC
LAXN
CITADEL L P
5.2%
view
B
2007-02-13 08:29:12.0
ALEXION PHARMACEUTICALS INC
LAXN
PRICE T ROWE ASSOCIATES INC
8.3%
view
S
2007-02-09 17:18:46.0
ALEXION PHARMACEUTICALS INC
LAXN
SECTORAL ASSET MANAGEMENT INC
7.7%
view
S
2007-02-08 09:57:38.0
ALEXION PHARMACEUTICALS INC
LAXN
BALYASNY ASSET MANAGEMENT LLC
4.38%
view
S
2007-01-31 19:16:21.0
ALEXION PHARMACEUTICALS INC
LAXN
JANUS CAPITAL MANAGEMENT LLC
4.0%
view
S
2006-10-11 18:51:49.0
ALEXION PHARMACEUTICALS INC
LAXN
CITADEL L P
5.0%
view
B
2006-03-06 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
D
5.7%
view
B
2006-03-06 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BROOKSIDE CAPITAL PARTNERS FUND LP
6.2%
view
B
2006-02-17 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BALYASNY ASSET MANAGEMENT LLC
5.22%
view
B
2006-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
JANUS CAPITAL MANAGEMENT LLC
9.8%
view
S
2006-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BAKER FELIX
4.2%
view
S
2006-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SAC CAPITAL ADVISORS LLC
0.1%
view
S
2006-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FMR CORP
n/a
view
B
2006-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SECTORAL ASSET MANAGEMENT INC
8.5%
view
S
2006-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CITADEL L P
5.8%
view
S
2006-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
5.9%
view
S
2006-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ZIFF ASSET MANAGEMENT LP
3.9%
view
B
2006-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
WESTFIELD CAPITAL MANAGEMENT CO LLC
6.05%
view
S
2006-02-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
RS INVESTMENT MANAGEMENT CO LLC
0.0%
view
S
2006-02-08 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
DUQUESNE CAPITAL MANAGEMENT L L C
0.7%
view
S
2006-02-08 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OPPENHEIMER FUNDS INC
0.0%
view
S
2005-12-09 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FEDERATED INVESTORS INC
0.01%
view
B
2005-11-30 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CITADEL L P
6.3%
view
S
2005-11-29 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PICTET & CIE EUROPE SA
5.3%
view
B
2005-10-21 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
DUQUESNE CAPITAL MANAGEMENT L L C
5.3%
view
B
2005-07-19 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BAKER FELIX
5.5%
view
S
2005-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
VIKING GLOBAL PERFORMANCE LLC
0.0%
view
S
2005-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
7.9%
view
B
2005-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OPPENHEIMER FUNDS INC
9.12%
view
S
2005-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SECTORAL ASSET MANAGEMENT INC
6.9%
view
S
2005-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
RS INVESTMENT MANAGEMENT CO LLC
6.1%
view
S
2005-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SAC CAPITAL ADVISORS LLC
5.4%
view
B
2005-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FEDERATED INVESTORS INC
5.27%
view
S
2005-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FMR CORP
n/a
view
B
2005-02-08 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
7.9%
view
B
2005-02-04 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ZIFF ASSET MANAGEMENT LP
6.03%
view
B
2005-01-07 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SAC CAPITAL ADVISORS LLC
5.4%
view
S
2004-02-18 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ISALY SAMUEL D
0.0%
view
S
2004-02-18 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED CAPITAL LLC
0.0%
view
S
2004-02-18 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISORS LLC
0.0%
view
B
2004-02-18 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
RS INVESTMENT MANAGEMENT CO LLC
8.1%
view
S
2004-02-17 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FMR CORP
n/a
view
S
2004-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
VIKING GLOBAL PERFORMANCE LLC
9.0%
view
B
2004-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SECTORAL ASSET MANAGEMENT INC
8.7%
view
S
2004-02-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OPPENHEIMER FUNDS INC
5.0%
view
S
2004-02-03 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
5.8%
view
B
2003-09-22 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
VIKING GLOBAL PERFORMANC LLC
9.3%
view
B
2003-08-07 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PICTET & CIE EUROPE SA
5.44%
view
B
2003-05-02 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED CAPITAL LLC
5.9%
view
B
2003-05-02 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISORS LLC
5.9%
view
S
2003-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISORS LLC
4.38%
view
S
2003-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FMR CORP
n/a
view
B
2003-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OPPENHEIMER FUNDS INC
13.73%
view
B
2003-02-03 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
6.1%
view
B
2002-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISERS INC
5.52%
view
B
2002-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ISALY SAMUEL D
5.52%
view
B
2002-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISORS LLC
5.52%
view
S
2002-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FRANKLIN RESOURCES INC
2.8%
view
S
2002-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FMR CORP
n/a
view
S
2002-02-11 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CAPITAL RESEARCH & MANAGEMENT CO
0.0%
view
S
2002-02-01 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SCUDDER KEMPER INVESTMENTS INC
n/a
view
S
2001-08-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISERS INC
5.25%
view
B
2001-08-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISORS LLC
5.25%
view
B
2001-06-06 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OPPENHEIMER MANAGEMENT CORP
5.0%
view
B
2001-06-05 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISERS INC
6.7%
view
S
2001-06-05 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISERS INC
4.2%
view
B
2001-05-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FMR CORP
n/a
view
S
2001-05-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
JANUS CAPITAL CORP
0.6%
view
S
2001-04-09 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
JANUS CAPITAL CORP
6.7%
view
B
2001-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PUTNAM INVESTMENTS INC
12.0%
view
B
2001-02-15 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
JANUS CAPITAL CORP
13.7%
view
S
2001-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SCUDDER KEMPER INVESTMENTS INC
n/a
view
S
2001-02-14 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BB BIOTECH AG
4.9%
view
B
2001-02-12 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CAPITAL RESEARCH & MANAGEMENT CO
5.1%
view
B
2001-02-12 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CAPITAL RESEARCH & MANAGEMENT CO
5.1%
view
S
2001-02-07 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
2.6%
view
B
2001-01-31 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
FRANKLIN RESOURCES INC
5.4%
view
S
2001-01-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
AMVESCAP PLC
0.0%
view
S
2000-12-05 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
KAUFMANN FUND INC
1.32%
view
S
2000-06-08 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
KAUFMANN FUND INC
5.19%
view
S
2000-06-08 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
KAUFMANN FUND INC
5.19%
view
B
2000-04-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
JANUS CAPITAL CORP
11.3%
view
S
2000-03-24 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISERS INC
4.2%
view
S
2000-02-07 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ZESIGER CAPITAL GROUP LLC
4.4%
view
B
2000-02-04 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
AMVESCAP PLC
5.6%
view
S
2000-02-03 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
5.4%
view
S
2000-01-28 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SCUDDER KEMPER INVESTMENTS INC
n/a
view
S
2000-01-28 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ZESIGER CAPITAL GROUP LLC
6.0%
view
B
1999-12-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
SCUDDER KEMPER INVESTMENTS INC
n/a
view
B
1999-08-20 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
KAUFMANN FUND INC
7.41%
view
S
1999-03-25 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ORBIMED ADVISERS INC
6.7%
view
B
1999-03-08 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CITIGROUP INC
3.7%
view
S
1999-02-26 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CITIBANK NA
3.7%
view
B
1999-02-16 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
CITIBANK NA
3.7%
view
S
1999-02-16 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OAK MANAGEMENT CORP
4.7%
view
B
1999-02-10 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
COLLINSON HOWE VENTURE PARTNERS INC
3.7%
view
B
1999-02-05 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PRICE T ROWE ASSOCIATES INC
7.4%
view
B
1999-01-22 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
TYCO INTERNATIONAL LTD
0.0%
view
B
1999-01-22 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
TYCO INTERNATIONAL LTD
7.3%
view
B
1999-01-21 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
ZESIGER CAPITAL GROUP LLC
7.3%
view
B
1998-05-27 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BB BIOTECH AG
16.3%
view
B
1998-03-27 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BB BIOTECH AG
16.25%
view
S
1998-02-19 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BIOTECHNOLOGY INVESTMENT GROUP L L C ET AL
7.1%
view
S
1998-02-12 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OAK MANAGEMENT CORP
5.5%
view
S
1997-12-18 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BB BIOTECH AG
11.4%
view
B
1997-12-12 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
UNITED STATES SURGICAL CORP
9.03%
view
S
1997-11-21 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PIONEERING MANAGEMENT CORP
n/a
view
S
1997-09-19 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BB BIOTECH AG
100.0%
view
B
1997-09-18 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BB BIOTECH AG
100.0%
view
B
1997-07-25 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
MEHTA & ISALY ASSET MANAGEMENT INC
8.8%
view
B
1997-02-28 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
BIOTECHNOLOGY INVESTMENT GROUP L L C ET AL
12.2%
view
B
1997-02-18 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
MEHTA & ISALY ASSET MANAGEMENT INC
6.1%
view
B
1997-02-13 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
OAK MANAGEMENT CORP
7.0%
view
B
1997-01-09 00:00:00.0
ALEXION PHARMACEUTICALS INC
alxn
PIONEERING MANAGEMENT CORP
n/a
view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.