Switch to:

Cerus Corp (CERS)Ownership Data

Short Interest History (%)

This is the historical short interest of Cerus Corp, as measured by the Short Percentage Of Float.

Date Short Interest
January 15, 201521.46
December 31, 201421.17
December 15, 201420.33
November 28, 201419.22
November 14, 201419.11
October 31, 201419.46
October 15, 201418.96
September 30, 201418.81
September 15, 201417.46
August 29, 201417.02
August 15, 201418.32
July 31, 201417.85
July 15, 201418
June 30, 201418.21
June 13, 201418.42
May 30, 201418.2
May 15, 201418.57
April 30, 201417.82
April 15, 201417.86
March 31, 201414.35
March 14, 201413.49
February 28, 201411.2
February 14, 201412.17
January 31, 201411.32
January 15, 201411.79
December 31, 201311.23
December 13, 201311.69
November 29, 201311.95
November 15, 201311.46
October 31, 201310.51
October 15, 201310.79
September 30, 201310.59
September 13, 201310.67
August 30, 201310.83
August 15, 201310.77
July 31, 201311.27
July 15, 201311.42
June 28, 201311.79
June 14, 201311.92
May 31, 201311.91
May 15, 201311.35
April 30, 201310.29
April 15, 201310.85
March 28, 201312.56
March 15, 201312.37
February 28, 201310.85
February 15, 201310.67
January 31, 201310.78
January 15, 201310.81
December 31, 201211.03
December 14, 201211.35
November 30, 201211.53
November 15, 201211.72
October 31, 201211.86
October 15, 201212.4
September 28, 201213.34
September 14, 201213.66
August 31, 201213.53
August 15, 201213.97
July 31, 201215.94
July 13, 201216.54
June 29, 201216.7
June 15, 201216.95
May 31, 201217.94
May 15, 201217.61
April 30, 201217.64
April 13, 201217.57
March 30, 201216.2
March 15, 201215.35
February 29, 201215.28
February 15, 201216.54
January 31, 201216.01
January 13, 201216.51
December 30, 201116.9
December 15, 201116.47
November 30, 201116.09
November 15, 201114.97
October 31, 201113.78
October 14, 201111.32
September 30, 201110.99
September 15, 201110.03
August 31, 20119.37
August 15, 20118.81
July 29, 20118.45
July 15, 20118.67
June 30, 20119.23
June 15, 20118.99
May 31, 20118.83
May 13, 20118.48
April 29, 20118.54
April 15, 20118.33
March 31, 20118.73
March 15, 20118.52
February 28, 20118.57
February 15, 20118.26
January 31, 20118.92
January 14, 20117.04
December 31, 20106.77
December 15, 20106.82
November 30, 20107.65
November 15, 20109.88
October 29, 201010.11
October 15, 20109.48
September 30, 20109.19
September 15, 20108.77
August 31, 20108.14
August 13, 20107.79
July 30, 20108.19
July 15, 20108.46
June 30, 20109.13
June 15, 20105.17
May 28, 20105.1
May 14, 20104.99
April 30, 20104.96
April 15, 20104.78
March 31, 20104.55
March 15, 20105.27
February 26, 20105.22
February 12, 20105.41
January 29, 20105.33
January 15, 20104.85
December 31, 20094.91
December 15, 20094.98
November 30, 20095.04
November 13, 20094.79
October 30, 20094.79
October 15, 20095.67
September 30, 20092.7
September 15, 20093.24
August 31, 20092.36
August 14, 20091.4
July 31, 20091.05
July 15, 20090.77
June 30, 20090.81
June 15, 20090.84
May 29, 20090.87
May 15, 20091.48
April 30, 20091.49
April 15, 20091.41
March 31, 20091.37
March 13, 20091.48
February 27, 20091.34
February 13, 20091.23
January 30, 20091.28
January 15, 20091.35
December 31, 20081.23
December 15, 20081.4
November 28, 20081.56
November 14, 20081.8
October 31, 20082.7
October 15, 20083.08
September 30, 20083.38
September 15, 20082.72
August 29, 20082.88
August 15, 20083.91
July 31, 20084.19
July 15, 20084.26
June 30, 20084.11
June 13, 20084.4
May 30, 20084.37
May 15, 20084.24
April 30, 20084.1
April 15, 20084.3
March 31, 20084.23
March 14, 20083.97
February 29, 20084.42
February 15, 20084.06
January 31, 20083.8
January 15, 20083.98
December 31, 20073.73
December 11, 20073.89
November 27, 20073.74
November 9, 20073.9
October 26, 20073.78
October 10, 20074.99
September 25, 20074.68
September 11, 20075.1
August 10, 20075.94
July 10, 200710.48
June 12, 200714.62
May 10, 200710
April 10, 20079.33
March 12, 200710.02
February 12, 20077.4
January 9, 20078.3
December 12, 20065.72
November 10, 20065.07
October 10, 20065.02
September 12, 20065.12
August 10, 20064.97
July 11, 20064.96
June 12, 20062.37
May 10, 20062.31
April 10, 20062.46
March 10, 20062.74
February 10, 20061.97
January 10, 20062.14
December 12, 20052.21
November 10, 20051.85
October 11, 20051.68
September 12, 20051.39
August 10, 20051.53
July 12, 20051.17
June 10, 20051.27
May 10, 20051.32
April 12, 20051.85
March 10, 20051.87
February 10, 20051.28
January 11, 20051.1
December 10, 20041.01
November 10, 20040.94
October 12, 20041.51
September 10, 20041.52
August 10, 20042.28
July 12, 20042.24
June 9, 20043.82
May 11, 20043.86
April 12, 20043.55
March 10, 20043.98
February 10, 20043.74
January 12, 20043.91
December 10, 20034.52
November 11, 20035.62
October 10, 20035.29
September 10, 20036.23
August 12, 20036.46
July 10, 200312.63
June 10, 200314.25
May 12, 200316.74
April 10, 200316.66
March 11, 200316.42
February 11, 200313.9
January 10, 200315.29
December 10, 200215.44
November 12, 200215.15
October 10, 200215.26
September 10, 200219.49
August 12, 200218.23
July 10, 200219.37
June 11, 200217.93
May 10, 200222.27
April 10, 200223
March 12, 200224.88
February 12, 200221.24
January 10, 200216.18
December 11, 200111.99
November 12, 200110.06
October 10, 20017.45
September 5, 20016.69
August 10, 20014.22
July 10, 20013.54
June 12, 20013.86
May 10, 20014.37
April 9, 20014.11
March 12, 20013.61
February 12, 20013.8
January 9, 20012.33
December 12, 20002.02
November 10, 20001.25
October 10, 20000.8
September 12, 20000.64
August 10, 20000.79
July 11, 20000.52
June 12, 20000.36
May 10, 20000.18
April 11, 20000.36
March 10, 20001.35
February 10, 20002.48
January 11, 20002.27
December 10, 19990.78
November 10, 19990.29
October 12, 19990.32
September 10, 19990.26
August 10, 19990.13
July 12, 19990.11
June 10, 19990.28
May 11, 19990.04
April 12, 19990.39
March 10, 19990.09
February 9, 19990.06
January 8, 19990.03
December 8, 19980.1
November 6, 19980.09
October 8, 19980.07
September 8, 19980.02
August 7, 19980.03
July 8, 19981.04
June 8, 19980.99
May 8, 19981.03
April 7, 19980.11
March 6, 19980.03
February 6, 19980.13
January 8, 19980.04
December 8, 19970.05
November 7, 19970.07
October 8, 19970.04
September 8, 19970.05
August 8, 19970.13
July 8, 19970.16
June 6, 19970.02
May 8, 19970.04
April 8, 19970.13

Institutional Ownership History (%)

This the Institutional Ownership History of Cerus CorpPeter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership
December 31, 201458
November 30, 201457
October 31, 201458
September 30, 201458
August 31, 201457
July 31, 201457
June 30, 201461
May 31, 201461
April 30, 201462
March 31, 201465
February 28, 201465
January 31, 201467
December 31, 201365
November 30, 201366
October 31, 201365
September 30, 201367
August 31, 201366
July 31, 201366
June 30, 201365
May 31, 201362
April 30, 201362
March 31, 201317
February 28, 201345
January 31, 201347
December 31, 201246
November 30, 201245
October 31, 201246
September 30, 201247
August 31, 201249
July 31, 201249
June 30, 201247
May 31, 201246
April 30, 201246
March 31, 201240
February 29, 201242
January 31, 201247
December 31, 201134
November 30, 201134
October 31, 201134
September 30, 201135
August 31, 201135
July 31, 201135
June 30, 201133
May 31, 201133
April 30, 201137
March 31, 201137
February 28, 201143
January 31, 201135
December 31, 201034
November 30, 201033
October 31, 201033
September 30, 201032
August 31, 201032
July 31, 201026
June 30, 201025
May 31, 201026
April 30, 201024
March 31, 201025
February 28, 201024
January 31, 201022
December 31, 200926
November 30, 200926
October 31, 200920
September 30, 200924
August 31, 200924
July 31, 200929
June 30, 200929
May 31, 200929
April 30, 200932
March 31, 200932
February 28, 200932
January 31, 200943
December 31, 200844
November 30, 200850
October 31, 200850
September 30, 200850
August 31, 200850
July 31, 200850
June 30, 200851
May 31, 200851
April 30, 200851
March 31, 200856
February 29, 200856
January 31, 200856

Insider ownership (%)

This is the historical insider ownership of Cerus Corp. 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
December 31, 20142
November 30, 20142
October 31, 20142
September 30, 20142
August 31, 20142
July 31, 20142
June 30, 20142
May 31, 20142
March 31, 20143
February 28, 20143
January 31, 20143
December 31, 20133
November 30, 20133
October 31, 20133
September 30, 20133
August 31, 20133
July 31, 20133
June 30, 20133
May 31, 20133
April 30, 20133
March 31, 20133
January 31, 20133
November 30, 20123
October 31, 20122
September 30, 20122
August 31, 20122
July 31, 20122
June 30, 20122
May 31, 20122
April 30, 20122
March 31, 20122
February 29, 20122
January 31, 20122
December 31, 20112
November 30, 20112
October 31, 20112
September 30, 20112
August 31, 20112
July 31, 20112
June 30, 20112
May 31, 20112
April 30, 20112
March 31, 20112
February 28, 20112
January 31, 20112
December 31, 20102
November 30, 20102
October 31, 20102
September 30, 20102
August 31, 20102
July 31, 20102
June 30, 20102
May 31, 20102
April 30, 20102
March 31, 20102
February 28, 20102
January 31, 20102
December 31, 20092
November 30, 20092
October 31, 20092
September 30, 20093
August 31, 20093
July 31, 20093
June 30, 20093
May 31, 20093
April 30, 20093
March 31, 20093
February 28, 20093
January 31, 20093
December 31, 20083
November 30, 20082
October 31, 20082
September 30, 20082
August 31, 20082
July 31, 20082
June 30, 20082
May 31, 20082
April 30, 20084
March 31, 20084
February 29, 20084
January 31, 20084
December 31, 20074
November 30, 20074
October 31, 20074
September 30, 20074
August 31, 20074
July 31, 20074
June 30, 20074
May 31, 20074
April 30, 20074
March 31, 20074
February 28, 20074
January 31, 20074
December 31, 20064
November 30, 20068
October 31, 20069
September 30, 20069
June 30, 20069
May 31, 20069
April 30, 20069
March 31, 20069
February 28, 200610
January 31, 200612
December 31, 200512
November 30, 200511
October 31, 200511
September 30, 200511
August 31, 200511
July 31, 200511
June 30, 200512
May 31, 200512
April 30, 200510
March 31, 200510
February 28, 200510
January 31, 200510
December 31, 200410
November 30, 20045
October 31, 20045
September 30, 20045
August 31, 20045
July 31, 20045
June 30, 20045
May 31, 20045
April 30, 20045
March 31, 20045
February 29, 20045

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Laurence M. Corash,M.D.Chief Medical Officer943,5061.21%2014-10-03
Claes GlassellExecutive Officer and Director, Director189,4570.24%2011-01-10
William M. GreenmanPresident and CEO184,5950.24%2014-11-10
William J. DawsonCFO156,8250.2%2008-03-17
Timothy B. AndersonN/A95,4400.12%2014-12-18
Dr. David N. Cook,PhDN/A43,836less than 0.1%2007-01-05
Howard G. ErvinN/A42,846less than 0.1%2013-01-07
Stephen T. IsaacsN/A29,341less than 0.1%2004-03-19
Kevin D. GreenChief Accounting Officer17,202less than 0.1%2013-01-07
Bruce C. CozaddDirector5,455less than 0.1%2014-12-08

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Baker Bros Advisors Llc11,722,5912014-11-0714.980.0048,765,979
Orbimed Advisors, LLC7,185,0002014-09-309.700.3028,812,000
Royce & Associates, LLC3,765,5052014-09-305.090.0515,100,000
BlackRock Fund Advisors2,666,7792014-09-303.600.0010,694,000
Vanguard Group, Inc.2,361,4672014-09-303.190.009,469,000
Thomson Horstmann & Bryant, Inc.1,944,4842014-09-302.630.547,797,000
Royce Value Plus Fund1,939,5002014-12-312.481.3012,102,480
iShares Russell 2000 (AU)1,346,2142015-01-231.460.027,121,472
Cortina Asset Management LLC1,325,8472014-09-301.790.235,317,000
Vanguard Total Stock Mkt Idx1,282,7102014-12-311.640.008,004,110

Add Notes, Comments

If you want to ask a question, or report a bug, please create a support ticket.

User Comments

No comment yet

Get WordPress Plugins for easy affiliate links on Stock Tickers and Guru Names | Earn affiliate commissions by embedding GuruFocus Charts
GuruFocus Affiliate Program: Earn up to $400 per referral. ( Learn More)
Free 7-day Trial
FEEDBACK