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Repligen Corp (RGEN) Ownership Data

Short Interest History (%)

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

Date Short Interest
May 15, 201513.15
April 30, 201511.96
April 15, 201512.13
March 31, 201512.72
March 13, 201515.13
February 27, 201515.64
February 13, 201515.22
January 30, 201514.94
January 15, 201514.23
December 31, 201414.18
December 15, 201416.37
November 28, 201416.89
November 14, 201417.22
October 31, 201418.94
October 15, 201418.89
September 30, 201416.89
September 15, 201415.9
August 29, 201415.41
August 15, 201415.49
July 31, 201416.3
July 15, 201417.19
June 30, 201416.93
June 13, 201417.42
May 30, 201417.86
May 15, 201419.53
April 30, 201419.03
April 15, 201416.8
March 31, 201415.52
March 14, 201413.51
February 28, 201411.55
February 14, 201411.25
January 31, 201411.29
January 15, 201410.88
December 31, 201310.71
December 13, 20139.85
November 29, 201318.73
November 15, 201319.54
October 31, 201318.33
October 15, 201318.28
September 30, 201318.19
September 13, 201317.46
August 30, 201316.4
August 15, 201315.58
July 31, 201314.76
July 15, 201314.48
June 28, 201313.58
June 14, 201313.28
May 31, 201312.64
May 15, 201312.65
April 30, 201310.92
April 15, 20138.75
March 28, 20138.26
March 15, 20139.85
February 28, 20139.93
February 15, 20139.84
January 31, 20139.83
January 15, 201310.13
December 31, 20129.19
December 14, 20129.12
November 30, 20128.33
November 15, 20126.09
October 31, 20125.32
October 15, 20124.75
September 28, 20123.84
September 14, 20123.88
August 31, 20123.76
August 15, 20123.9
July 31, 20124.15
July 13, 20124.51
June 29, 20126.4
June 15, 20121.64
May 31, 20121.72
May 15, 20122.17
April 30, 20120.74
April 13, 20120.37
March 30, 20120.13
March 15, 20120.08
February 29, 20120.12
February 15, 20120.1
January 31, 20120.1
January 13, 20120.15
December 30, 20110.15
December 15, 20110.15
November 30, 20110.15
November 15, 20110.19
October 31, 20110.22
October 14, 20110.21
September 30, 20110.97
September 15, 20111.01
August 31, 20110.99
August 15, 20110.95
July 29, 20110.99
July 15, 20110.86
June 30, 20110.82
June 15, 20110.8
May 31, 20110.85
May 13, 20110.82
April 29, 20110.85
April 15, 20110.82
March 31, 20110.76
March 15, 20110.74
February 28, 20111.41
February 15, 20111.45
January 31, 20111.49
January 14, 20111.16
December 31, 20101.08
December 15, 20100.98
November 30, 20100.99
November 15, 20101.02
October 29, 20101
October 15, 20101.01
September 30, 20100.91
September 15, 20100.94
August 31, 20100.95
August 13, 20100.89
July 30, 20100.97
July 15, 20101.01
June 30, 20102.23
June 15, 20107.48
May 28, 20106.94
May 14, 20106.49
April 30, 20105.43
April 15, 20105.27
March 31, 20104.96
March 15, 20104.95
February 26, 20105.23
February 12, 20105.12
January 29, 20104.39
January 15, 20103.91
December 31, 20093.85
December 15, 20093.86
November 30, 20094.09
November 13, 20093.93
October 30, 20093.65
October 15, 20093.31
September 30, 20093.83
September 15, 20093.75
August 31, 20093.63
August 14, 20093.76
July 31, 20093.7
July 15, 20094.53
June 30, 20092.22
June 15, 20092.23
May 29, 20092.41
May 15, 20092.1
April 30, 20091.89
April 15, 20092
March 31, 20092.74
March 13, 20093.12
February 27, 20093
February 13, 20093.41
January 30, 20093.4
January 15, 20093.22
December 31, 20083.37
December 15, 20084.1
November 28, 20084.21
November 14, 20084.48
October 31, 20085
October 15, 20083.93
September 30, 20086.61
September 15, 20086.58
August 29, 20086.48
August 15, 20087.11
July 31, 20087.92
July 15, 20088.87
June 30, 20082.21
June 13, 20082.11
May 30, 20082.31
May 15, 20082.18
April 30, 20082.06
April 15, 20082.01
March 31, 20081.82
March 14, 20080.6
February 29, 20080.49
February 15, 20080.7
January 31, 20080.72
January 15, 20080.43
December 31, 20070.16
December 11, 20070.19
November 27, 20070.14
November 9, 20070.15
October 26, 20070.12
October 10, 20070.11
September 25, 20070.11
September 11, 20070.11
August 10, 20070.31
July 10, 20070.34
June 12, 20070.38
May 10, 20070.43
April 10, 20070.34
March 12, 20070.38
February 12, 20070.48
January 9, 20070.51
December 12, 20060.5
November 10, 20060.56
October 10, 20060.64
September 12, 20060.58
August 10, 20060.45
July 11, 20060.49
June 12, 20060.5
May 10, 20060.39
April 10, 20060.27
March 10, 20060.44
February 10, 20060.61
January 10, 20060.71
December 12, 20050.67
November 10, 20050.79
October 11, 20050.88
September 12, 20050.83
August 10, 20050.21
July 12, 20050.02
June 10, 20050.02
May 10, 20050.08
April 12, 20050.1
March 10, 20050.05
February 10, 20050.08
January 11, 20050.15
December 10, 20040.09
November 10, 20041.27
October 12, 20041.87
September 10, 20042.93
August 10, 20043.07
July 12, 20044.03
June 9, 20046.14
May 11, 20046.4
April 12, 20045.59
March 10, 20045.19
February 10, 20046.87
January 12, 200418.63
December 10, 200312.99
November 11, 20038.94
October 10, 20038.28
September 10, 20035.48
August 12, 20035.77
July 10, 200310.75
June 10, 20039.42
May 12, 20036.11
April 10, 20033.6
March 11, 20030.07
February 11, 20030.07
January 10, 20030.06
December 10, 20020.06
November 12, 20020.06
October 10, 20020.08
September 10, 20020.07
August 12, 20020.08
July 10, 20020.44
June 11, 20020.56
May 10, 20020.56
April 10, 20020.46
March 12, 20020.94
February 12, 20020.94
January 10, 20020.84
December 11, 20010.8
November 12, 20011.24
October 10, 20011.17
September 5, 20011.08
August 10, 20010.62
July 10, 20010.63
June 12, 20010.73
May 10, 20010.89
April 9, 20011.05
March 12, 20010.65
February 12, 20010.66
January 9, 20010.56
December 12, 20000.59
November 10, 20000.6
October 10, 20000.6
September 12, 20000.64
August 10, 20000.63
July 11, 20000.85
June 12, 20000.74
May 10, 20001.36
April 11, 20001.22
March 10, 20001.18
February 10, 20000.21
January 11, 20000.16
December 10, 19991.55
November 10, 19992.29
October 12, 19992.54
September 10, 19991.8
August 10, 19990.05
July 12, 19992.74
June 10, 19991.92
May 11, 19990.07
April 12, 19990.01
March 10, 19990.01
February 9, 19990.01
December 8, 19980.01
November 6, 19980.02
October 8, 19980.04
September 8, 19980.02
August 7, 19980.02
July 8, 19980.02
June 8, 19980.01
May 8, 19980.03
April 7, 19980.13
March 6, 19980.02
February 6, 19980.02
January 8, 19980.01
December 8, 19970.01
November 7, 19970.02
October 8, 19970.01
September 8, 19970.01
August 8, 19970.02
July 8, 19970.02
May 8, 19970.02
April 8, 19970.02
March 7, 19970.02
February 7, 19970.07
January 8, 19970.08
December 6, 19960.01
October 8, 19960.09
September 6, 19960.01
August 8, 19960.1
July 8, 19960.04
June 7, 19960.02
May 8, 19960.03
April 8, 19960.04
March 8, 19960.01
February 8, 19960.03
January 8, 19960.07
December 8, 19950.07
November 8, 19950.03
October 6, 19950.1
September 8, 19950.03
August 8, 19950.13
July 7, 19950.16
June 8, 19950.02
May 8, 19950.14
April 6, 19950.06
March 8, 19950.07
February 8, 19950.08
January 6, 19950.08

Institutional Ownership History (%)

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

Date Institutional Ownership
April 30, 201593
March 31, 201591
February 28, 201590
January 31, 201591
December 31, 201496
November 30, 201488
October 31, 201488
September 30, 201490
August 31, 201487
July 31, 201487
June 30, 201487
May 31, 201485
April 30, 201484
March 31, 201479
February 28, 201478
January 31, 201477
December 31, 201379
November 30, 201370
October 31, 201370
September 30, 201375
August 31, 201359
July 31, 201360
June 30, 201354
May 31, 201350
April 30, 201350
March 31, 201347
February 28, 201348
January 31, 201348
December 31, 201253
November 30, 201246
October 31, 201244
September 30, 201242
August 31, 201242
July 31, 201242
June 30, 201237
May 31, 201235
April 30, 201235
March 31, 201237
February 29, 201239
January 31, 201236
December 31, 201139
November 30, 201144
October 31, 201144
September 30, 201145
August 31, 201145
July 31, 201139
June 30, 201137
May 31, 201137
April 30, 201140
March 31, 201140
February 28, 201140
January 31, 201140
December 31, 201040
November 30, 201040
October 31, 201041
September 30, 201044
August 31, 201044
July 31, 201047
June 30, 201049
May 31, 201047
April 30, 201048
March 31, 201054
February 28, 201052
January 31, 201049
December 31, 200951
November 30, 200951
October 31, 200961
September 30, 200949
August 31, 200949
July 31, 200951
June 30, 200951
May 31, 200952
April 30, 200948
March 31, 200949
February 28, 200949
January 31, 200955
December 31, 200853
November 30, 200853
October 31, 200853
September 30, 200856
August 31, 200856
July 31, 200856
June 30, 200854
May 31, 200854
April 30, 200854
March 31, 200842
February 29, 200842
January 31, 200842

Insider ownership (%)

This is the historical insider ownership of Repligen 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
April 30, 20157
March 31, 20157
February 28, 20157
January 31, 20157
December 31, 20147
November 30, 20147
October 31, 20147
September 30, 20147
August 31, 20147
July 31, 20147
June 30, 20147
May 31, 20147
March 31, 20147
February 28, 20147
January 31, 20147
December 31, 20137
November 30, 20137
October 31, 20137
September 30, 20137
August 31, 20137
July 31, 20137
June 30, 20137
May 31, 20137
April 30, 20137
March 31, 20137
January 31, 20137
November 30, 20127
October 31, 20127
September 30, 20127
August 31, 20127
July 31, 20127
June 30, 20127
May 31, 20127
April 30, 20127
March 31, 20127
February 29, 20127
January 31, 20127
December 31, 20117
November 30, 20117
October 31, 20117
September 30, 20117
August 31, 20117
July 31, 20116
June 30, 20116
May 31, 20116
April 30, 20116
March 31, 20116
February 28, 20116
January 31, 20116
December 31, 20106
November 30, 20106
October 31, 20106
September 30, 20106
August 31, 20106
July 31, 20106
June 30, 20106
May 31, 20106
April 30, 20106
March 31, 20106
February 28, 20106
January 31, 20106
December 31, 20096
November 30, 20096
October 31, 20096
September 30, 20096
August 31, 20096
July 31, 20096
June 30, 20096
May 31, 20096
April 30, 20096
March 31, 20096
February 28, 20096
January 31, 20096
December 31, 20086
November 30, 20086
October 31, 20086
September 30, 20086
August 31, 20086
July 31, 20086
June 30, 20086
May 31, 20086
April 30, 200812
March 31, 200812
February 29, 200812
January 31, 200812
December 31, 200713
November 30, 200713
October 31, 200712
September 30, 200713
August 31, 200713
July 31, 200712
June 30, 200712
May 31, 200711
April 30, 200711
March 31, 200711
February 28, 200711
January 31, 200711
December 31, 200611
November 30, 20065
October 31, 20065
September 30, 20065
June 30, 20065
May 31, 20065
April 30, 20066
March 31, 20066
February 28, 20066
January 31, 20066
December 31, 20056
November 30, 20056
October 31, 20056
September 30, 20056
August 31, 20056
July 31, 20056
June 30, 20056
May 31, 20056
April 30, 20056
March 31, 20056
February 28, 20056
January 31, 20056
December 31, 20046
November 30, 20046
October 31, 20046
September 30, 20046
August 31, 20046
July 31, 20046
June 30, 20046
May 31, 20046
April 30, 20046
March 31, 20046
February 29, 20046

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Paul R. Schimmel,PhDN/A665,1062.02%2007-06-14
ProfessorDr. Alexander Rich,M.D.Director436,5001.33%2008-09-09
Dr. Walter C. Herlihy,PhDPRESIDENT AND CEO262,4300.8%2015-05-12
Dr. James R. Rusche,PhDSenior Vice President96,8490.29%2015-05-15
Dr. Daniel P. Witt,PhDSenior Vice President77,9990.24%2014-06-20
Howard Benjamin,PhDVP Business Development46,5540.14%2015-03-19
Mr. Tony J. HuntN/A45,2670.14%2015-02-26
Dr. Alfred L. Goldberg,PhDDirector40,3310.12%2015-05-21
Ms. Karen A. DawesDirector39,2410.12%2015-05-21
Dr. Glenn L. Cooper,M.D.Director34,3310.1%2015-05-21

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Fidelity Management and Research Company   Premium Plus2,707,5222015-03-318.240.0182,200,000
BlackRock Fund Advisors   Premium Plus2,315,3752015-03-317.050.0270,295,000
Fidelity® Select Biotechnology Portfolio1,861,3152015-03-315.670.4056,509,523
Dimensional Fund Advisors, Inc.   Premium Plus1,319,1622015-03-314.020.0340,050,000
State Street Corp   Premium Plus1,265,0602015-03-313.850.0038,405,000
Vanguard Group, Inc.   Premium Plus1,247,0832015-03-313.800.0037,862,000
Invesco Advisers, Inc   Premium Plus1,122,2192014-12-313.420.0122,220,000
Conestoga Capital Advisors, LLC   Premium Plus1,040,2332015-03-313.172.1631,581,000
Renaissance Technologies Corp Premium860,1652015-03-312.620.0626,115,000
Oppenheimer International Small Co Fund839,1002015-03-312.550.7625,475,076

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