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Achillion Pharmaceuticals Inc (ACHN) Ownership Data

Short Interest History (%)

This is the historical short interest of Achillion Pharmaceuticals Inc, as measured by the Short Percentage Of Float.

Date Short Interest
June 15, 201518.24
May 29, 201517.75
May 15, 201515.26
April 30, 201515.16
April 15, 201513.29
March 31, 201513.61
March 13, 201514.15
February 27, 201514.66
February 13, 201514.79
January 30, 201527.28
January 15, 201529.97
December 31, 201428.88
December 15, 201427.6
November 28, 201424.74
November 14, 201428.83
October 31, 201424.14
October 15, 201424.3
September 30, 201426.12
September 15, 201431.51
August 29, 201430.51
August 15, 201427.23
July 31, 201427.81
July 15, 201426.8
June 30, 201427.14
June 13, 201438.76
May 30, 201435.19
May 15, 201435.31
April 30, 201434.38
April 15, 201434.45
March 31, 201431.58
March 14, 201431.46
February 28, 201429.56
February 14, 201429.14
January 31, 201429.64
January 15, 201426.85
December 31, 201327.76
December 13, 201326.81
November 29, 201327.83
November 15, 201328.64
October 31, 201330.6
October 15, 201330.16
September 30, 201325.82
September 13, 201324.24
August 30, 201323.99
August 15, 201323.35
July 31, 201322.87
July 15, 201323.59
June 28, 201321.43
June 14, 201320.31
May 31, 201320.58
May 15, 201321.18
April 30, 201320.93
April 15, 201320.33
March 28, 201319.77
March 15, 201320.14
February 28, 201320.12
February 15, 201320.59
January 31, 201320.39
January 15, 201330.3
December 31, 201230.18
December 14, 201228.41
November 30, 201227.92
November 15, 201227.22
October 31, 201225.98
October 15, 201227.07
September 28, 201226.79
September 14, 201227.13
August 31, 201226.96
August 15, 201227.12
July 31, 201225.72
July 13, 201225
June 29, 201224.85
June 15, 201225.25
May 31, 201224.53
May 15, 201223.12
April 30, 201221.69
April 13, 201221.25
March 30, 201219.77
March 15, 201218.9
February 29, 201216.71
February 15, 201217.01
January 31, 201216.39
January 13, 201216.86
December 30, 201114.77
December 15, 201113.82
November 30, 201112.93
November 15, 201112.8
October 31, 201112.87
October 14, 201113.84
September 30, 201114.22
September 15, 201114.35
August 31, 201111.66
August 15, 201110.77
July 29, 20118.47
July 15, 20118.91
June 30, 20119.34
June 15, 20116.38
May 31, 20114.03
May 13, 20112.61
April 29, 20113.88
April 15, 20113.48
March 31, 20110.47
March 15, 20110.56
February 28, 20110.52
February 15, 20110.48
January 31, 20110.59
January 14, 20110.71
December 31, 20100.72
December 15, 20100.71
November 30, 20100.75
November 15, 20100.71
October 29, 20100.69
October 15, 20101.27
September 30, 20101.49
September 15, 20101.31
August 31, 20101.44
August 13, 20100.82
July 30, 20100.65
July 15, 20100.52
June 30, 20100.66
June 15, 20100.61
May 28, 20100.66
May 14, 20100.66
April 30, 20100.74
April 15, 20100.72
March 31, 20100.52
March 15, 20100.34
February 26, 20100.55
February 12, 20100.59
January 29, 20108.35
January 15, 20104.4
December 31, 20092.98
December 15, 20090.28
November 30, 20090.21
November 13, 20090.21
October 30, 20090.21
October 15, 20090.21
September 30, 20090.22
September 15, 20090.25
August 31, 20090.23
August 14, 20090.26
July 31, 20090.24
July 15, 20090.24
June 30, 20090.25
June 15, 20090.25
May 29, 20090.23
May 15, 20090.24
April 30, 20090.23
April 15, 20090.23
March 31, 20090.23
March 13, 20090.41
February 27, 20090.53
February 13, 20090.48
January 30, 20090.52
January 15, 20090.56
December 31, 20080.57
December 15, 20080.57
November 28, 20080.68
November 14, 20080.68
October 31, 20080.69
October 15, 20080.7
September 30, 20080.3
September 15, 20080.28
August 29, 20080.3
August 15, 20080.3
July 31, 20080.5
July 15, 20080.49
June 30, 20080.53
June 13, 20080.51
May 30, 20080.52
May 15, 20080.55
April 30, 20080.54
April 15, 20080.54
March 31, 20080.53
March 14, 20080.54
February 29, 20080.58
February 15, 20080.56
January 31, 20080.19
January 15, 20080.16
December 31, 20070.16
December 11, 20070.15
November 27, 20070.15
November 9, 20070.17
October 26, 20070.25
October 10, 20070.16
September 25, 20070.16
September 11, 20070.59
August 10, 20070.2
July 10, 20070.58
June 12, 20070.37
May 10, 20070.23
April 10, 20070.14
March 12, 20070.34
February 12, 20070.59
January 9, 20070.1
December 12, 20060.1

Institutional Ownership History (%)

This the Institutional Ownership History of Achillion Pharmaceuticals IncPeter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership
March 31, 201588
December 31, 201486
September 30, 201482
June 30, 201485
March 31, 201481
December 31, 201389
September 30, 201385
June 30, 201389
March 31, 201395
December 31, 201294
September 30, 201285
June 30, 201288
March 31, 201266
December 31, 201169
September 30, 201155
June 30, 201155
March 31, 201143
December 31, 201040
September 30, 201073
June 30, 201045
March 31, 201045
December 31, 200941
September 30, 200921
June 30, 200920
March 31, 200921
December 31, 200824
September 30, 200820
June 30, 200835
March 31, 200836
December 31, 200732
September 30, 200733
June 30, 200730
March 31, 200733
December 31, 200635

Insider ownership (%)

This is the historical insider ownership of Achillion Pharmaceuticals Inc. It is usually better to buy companies with large insider ownership. The company insiders' interest are more aligned with external shareholders in this case.

Date Insider Ownership
April 30, 200812
March 31, 200812
February 29, 200812
January 31, 200812
December 31, 200712
November 30, 200712
October 31, 200712
September 30, 200712
August 31, 200712
July 31, 200712
June 30, 200712
May 31, 200712
April 30, 200712
March 31, 200715
February 28, 200715
January 31, 200715
December 31, 200615
November 30, 200615
October 31, 200615
September 30, 200616

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Dennis LiottaDirector100,000less than 0.1%2013-11-22
Nicholas J. Simon,IIIN/A51,515less than 0.1%2012-06-04
Dr. Jason S. Fisherman,M.D.Director40,000less than 0.1%2013-11-18
Kurt C. GravesDirector22,709less than 0.1%2012-06-11
Dr. John C. Pottage,Jr,M.D.SVP and Chief Medical Officer12,500less than 0.1%2006-10-25
Mr. Gary E. FrashierDirector5,000less than 0.1%2014-06-16
Gautam Shah,PhDEVP and Chief Compliance Ofc.3,125less than 0.1%2012-12-31
Mr. Christopher A. WhiteN/A2,242less than 0.1%2006-10-31
Dr. Elizabeth A. Olek, D.O.SVP and CMO2,000less than 0.1%2012-01-10

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Wellington Management Company LLP   Premium Plus10,135,3702015-03-318.620.0399,934,000
Fidelity Management and Research Company   Premium Plus8,869,9722015-03-317.550.0187,458,000
RA Capital Management, LLC   Premium Plus8,207,5302015-03-316.988.1980,926,000
Fidelity® Select Biotechnology Portfolio7,229,8002015-04-306.150.4663,260,750
Vanguard Group, Inc.   Premium Plus6,470,4292015-03-315.500.0063,799,000
Point72 Asset Management, L.P. Premium5,797,2002015-05-284.930.0050,725,500
Camber Capital Management LLC   Premium Plus5,700,0002014-05-195.890.0016,245,000
Janus Capital Management LLC   Premium Plus4,629,2022015-03-313.940.0645,644,000
BlackRock Fund Advisors   Premium Plus4,537,7342015-03-313.860.0144,742,000
State Street Corp   Premium Plus3,757,8132015-03-313.200.0037,058,000

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