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AEterna Zentaris Inc (AEZS) Ownership Data

Short Interest History (%)

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

Date Short Interest
July 15, 20152.98
June 30, 20153.43
June 15, 20154.47
May 29, 20154.26
May 15, 20151.56
April 30, 20151.33
April 15, 20151.83
March 31, 20152.31
March 13, 20151.25
February 27, 20150.79
February 13, 20150.65
January 30, 20150.63
January 15, 20150.65
December 31, 20140.74
December 15, 20141.97
November 28, 20142.61
November 14, 20142.36
October 31, 20146.65
October 15, 20147.22
September 30, 20148.35
September 15, 20148.27
August 29, 20148.27
August 15, 20149.18
July 31, 20149.62
July 15, 20149.36
June 30, 20148.81
June 13, 20148.77
May 30, 20148.31
May 15, 20147.4
April 30, 20146.9
April 15, 20147.29
March 31, 20148.01
March 14, 20146.14
February 28, 20146.69
February 14, 20146.62
January 31, 20146.96
January 15, 20144.81
December 31, 20134.65
December 13, 20138.52
November 29, 20134.73
November 15, 20134.44
October 31, 20134.45
October 15, 20135.06
September 30, 20135.16
September 13, 20135.01
August 30, 20135.04
August 15, 20134.59
July 31, 20134.75
July 15, 20134.79
June 28, 20134.78
June 14, 20134.85
May 31, 20134.91
May 15, 20134.65
April 30, 20134.74
April 15, 20134.04
March 28, 20134.32
March 15, 20135.56
February 28, 20135.43
February 15, 20135.4
January 31, 20133.79
January 15, 20133.17
December 31, 20122.17
December 14, 20122.3
November 30, 20121.97
November 15, 20122.05
October 31, 20122.03
October 15, 20124.13
September 28, 20121.98
September 14, 20121.91
August 31, 20121.93
August 15, 20121.83
July 31, 20121.9
July 13, 20121.86
June 29, 20122.07
June 15, 20122.1
May 31, 20122.11
May 15, 20122.28
April 30, 20122.65
April 13, 20123.38
March 30, 20125.29
March 15, 20126.02
February 29, 20125.32
February 15, 20125.27
January 31, 20125.29
January 13, 20125.43
December 30, 20115.42
December 15, 20115.49
November 30, 20115.56
November 15, 20115.44
October 31, 20115.19
October 14, 20115.32
September 30, 20115.84
September 15, 20116.14
August 31, 20116.09
August 15, 20116.12
July 29, 20116.48
July 15, 20116.51
June 30, 20117.2
June 15, 20117.07
May 31, 20116.63
May 13, 20116.31
April 29, 20116.26
April 15, 20117.02
March 31, 20117.24
March 15, 201113.11
February 28, 201112.75
February 15, 201112.63
January 31, 201111.62
January 14, 201110.63
December 31, 201010.68
December 15, 20109.77
November 30, 20108.08
November 15, 20108.03
October 29, 20108.09
October 15, 20107.92
September 30, 20107.7
September 15, 20107.22
August 31, 20107.54
August 13, 20108.29
July 30, 20108.57
July 15, 20109.1
June 30, 20109.41
June 15, 201010.1
May 28, 201010.11
May 14, 20108.15
April 30, 20103.41
April 15, 20100.63
March 31, 20100.34
March 15, 20100.21
February 26, 20100.21
February 12, 20100.24
January 29, 20100.26
January 15, 20100.2
December 31, 20090.21
December 15, 20090.37
November 30, 20090.38
November 13, 20090.23
October 30, 20090.28
October 15, 20090.1
September 30, 20090.21
September 15, 20090.2
August 31, 20090.39
August 14, 20090.62
July 31, 20090.2
July 15, 20090.18
May 29, 20090.01
May 15, 20090.01
April 30, 20090.02
April 15, 20090.04
March 31, 20090.03
March 13, 20090.02
February 27, 20090.03
February 13, 20090.02
January 30, 20090.03
January 15, 20090.03
December 31, 20080.03
December 15, 20080.03
November 28, 20080.03
November 14, 20080.04
October 31, 20080.04
October 15, 20080.05
September 30, 20080.06
September 15, 20080.07
August 29, 20080.07
August 15, 20080.07
July 31, 20080.08
July 15, 20080.07
June 30, 20080.07
June 13, 20080.08
May 30, 20080.08
May 15, 20080.07
April 30, 20080.07
April 15, 20080.05
March 31, 20080.08
March 14, 20080.08
February 29, 20080.07
February 15, 20080.08
January 31, 20080.08
January 15, 20080.07
December 31, 20070.12
December 11, 20070.11
November 27, 20070.1
November 9, 20070.12
October 26, 20070.17
October 10, 20070.15
September 25, 20070.15
September 11, 20070.11
August 10, 20070.17
July 10, 20070.18
June 12, 20070.31
May 10, 20070.27
April 10, 20070.35
March 12, 20070.37
February 12, 20070.3
January 9, 20070.27
December 12, 20060.4
November 10, 20060.43
October 10, 20060.54
September 12, 20060.51
August 10, 20060.46
July 11, 20060.32
June 12, 20060.24
May 10, 20060.03
April 10, 20060.06
March 10, 20060.03
February 10, 20060.08
January 10, 20060.1
December 12, 20050.1
November 10, 20050.69
October 11, 20050.75
September 12, 20050.6
August 10, 20050.68
July 12, 20050.79
June 10, 20050.78
May 10, 20050.74
April 12, 20050.78
March 10, 20050.61
February 10, 20050.69
January 11, 20050.58
December 10, 20040.64
November 10, 20040.47
October 12, 20040.33
September 10, 20040.39
August 10, 20040.32
July 12, 20040.53
June 9, 20040.73
May 11, 20040.17
April 12, 20040.09
March 10, 20040.54
February 10, 20040.53
January 12, 20040.02
December 10, 20030.01
November 11, 20030.03
October 10, 20030.05
September 10, 20037.41
August 12, 20035.98
July 10, 20034.63
June 10, 20034.27
May 12, 20033.51
April 10, 20032.15
March 11, 20032.17
February 11, 20031.88
January 10, 20031.7
December 10, 20021.4
November 12, 20020.66
October 10, 20020.61
September 10, 20020.75
August 12, 20020.33
November 12, 20010.02
August 10, 20010.04
July 10, 20010.01
November 10, 20000.01
September 12, 20000.01

Institutional Ownership History (%)

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

Date Institutional Ownership
June 30, 201518
March 31, 201518
December 31, 20142
September 30, 20141
June 30, 20142
March 31, 20141
December 31, 20134
September 30, 20133
June 30, 20132
March 31, 20134
December 31, 201211
September 30, 20121
June 30, 20122
March 31, 20126
December 31, 20115
September 30, 20116
June 30, 20118
March 31, 201112
December 31, 201012
September 30, 201016
June 30, 201025
March 31, 201036
December 31, 200914
September 30, 20097
June 30, 200910
March 31, 20097
December 31, 20087
September 30, 200810
June 30, 200810
March 31, 200810
December 31, 200711
September 30, 20079
June 30, 20078
March 31, 200711
December 31, 200611
September 30, 200629
June 30, 200633
March 31, 200634
December 31, 200532
September 30, 200524
June 30, 200528
March 31, 20056
December 31, 200410
September 30, 20049
June 30, 200415
March 31, 20042
December 31, 20034
September 30, 20034
June 30, 20032
March 31, 20031
December 31, 20022
September 30, 20021
June 30, 20022
December 31, 20012
June 30, 20011
March 31, 20011

Insider ownership (%)

This is the historical insider ownership of AEterna Zentaris 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.

No ownership data available.

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Heights Capital Management Inc   Premium Plus8,538,9532015-03-319.430.104,579
Tenor Capital Management Co Lp   Premium Plus5,732,9672015-03-316.330.533,074
Deerfield Management Co   Premium Plus898,5742015-03-310.990.02482
Renaissance Technologies Corp Premium563,7002015-03-310.62N/A302
Nine Chapters Capital Management LLC   Premium Plus369,6002015-03-310.410.02198
Hudson Bay Capital Management LP   Premium Plus286,3602015-03-310.32N/A154
Millennium Management LLC   Premium Plus147,0452015-03-310.16N/A79
Creative Planning, Inc.   Premium Plus100,0002015-06-300.10N/A28
Columbia Mangmt Investment Advisers, LLC   Premium Plus42,8332015-03-310.05N/A23
TWO SIGMA SECURITIES, LLC   Premium Plus33,9442015-03-310.040.0218

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