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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
August 14, 201510.14
July 31, 201510.68
July 15, 201512.05
June 30, 201512.19
June 15, 201514.03
May 29, 201513.49
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
June 30, 201597
March 31, 201594
December 31, 201492
September 30, 201488
June 30, 201487
March 31, 201481
December 31, 201379
September 30, 201372
June 30, 201362
March 31, 201355
December 31, 201253
September 30, 201249
June 30, 201245
March 31, 201240
December 31, 201139
September 30, 201138
June 30, 201138
March 31, 201137
December 31, 201039
September 30, 201040
June 30, 201041
March 31, 201044
December 31, 200946
September 30, 200946
June 30, 200951
March 31, 200955
December 31, 200848
September 30, 200852
June 30, 200854
March 31, 200842
December 31, 200730
September 30, 200727
June 30, 200718
March 31, 200723
December 31, 200622
September 30, 200621
June 30, 200624
March 31, 200623
December 31, 200519
September 30, 200519
June 30, 200514
March 31, 200513
December 31, 200410
September 30, 200413
June 30, 200416
March 31, 200420
December 31, 200331
September 30, 200329
June 30, 200327
March 31, 200325
December 31, 200225
September 30, 200225
June 30, 200226
March 31, 200227
December 31, 200129
September 30, 200127
June 30, 200130
December 31, 200030
September 30, 200027
June 30, 200028
March 31, 200027

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
July 31, 20156
June 30, 20156
May 31, 20156
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
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
Dr. Earl W. Henry,M.D.Director21,380less than 0.1%2013-05-09

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Fidelity Management and Research Company   Premium Plus3,657,4302015-06-3011.130.02150,942
BlackRock Fund Advisors   Premium Plus2,244,5872015-06-306.830.0292,634
Fidelity® Select Biotechnology Portfolio1,861,3152015-06-305.670.4776,816
RS Investment Management Co. LLC Premium1,382,5732015-06-304.210.4957,059
Invesco Advisers, Inc   Premium Plus1,345,4842015-03-314.100.0340,849
OppenheimerFunds, Inc.   Premium Plus1,327,9102015-06-304.040.0654,803
State Street Corp   Premium Plus1,267,7852015-06-303.860.0152,325
Vanguard Group, Inc.   Premium Plus1,266,5032015-06-303.86N/A52,268
Dimensional Fund Advisors, Inc.   Premium Plus1,233,2602015-06-303.750.0350,897
Renaissance Technologies Corp Premium950,1042015-06-302.890.0939,211

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