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Arena Pharmaceuticals Inc (ARNA)Ownership Data

Short Interest History (%)

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

Date Short Interest
February 13, 201520.22
January 30, 201520.07
January 15, 201520.03
December 31, 201420.17
December 15, 201420.66
November 28, 201420.45
November 14, 201420.78
October 31, 201421.63
October 15, 201422.82
September 30, 201423.07
September 15, 201420.39
August 29, 201420.28
August 15, 201421.5
July 31, 201421.31
July 15, 201421.79
June 30, 201422.16
June 13, 201422.32
May 30, 201423.33
May 15, 201424.46
April 30, 201426.87
April 15, 201428.06
March 31, 201428.14
March 14, 201425.99
February 28, 201426.82
February 14, 201427.36
January 31, 201430.03
January 15, 201430.1
December 31, 201329.68
December 13, 201330.55
November 29, 201330.43
November 15, 201329.96
October 31, 201328.38
October 15, 201326.38
September 30, 201329.09
September 13, 201328
August 30, 201328.51
August 15, 201329.64
July 31, 201330.34
July 15, 201329.98
June 28, 201327.89
June 14, 201326.33
May 31, 201326.47
May 15, 201327.5
April 30, 201327.39
April 15, 201328.77
March 28, 201329.63
March 15, 201334.23
February 28, 201332.5
February 15, 201330.85
January 31, 201330.75
January 15, 201329.76
December 31, 201229.33
December 14, 201231.67
November 30, 201231.38
November 15, 201234.43
October 31, 201228.41
October 15, 201226.46
September 28, 201226.6
September 14, 201225.47
August 31, 201224.5
August 15, 201223.84
July 31, 201221.8
July 13, 201222.61
June 29, 201225.7
June 15, 201225.25
May 31, 201222.17
May 15, 201222.98
April 30, 201224.87
April 13, 201223.63
March 30, 201231.71
March 15, 201223.56
February 29, 201221.45
February 15, 201219.62
January 31, 201219.28
January 13, 201219.47
December 30, 201117.24
December 15, 201117.16
November 30, 201117.02
November 15, 201117.06
October 31, 201117.15
October 14, 201117.89
September 30, 201118.49
September 15, 201117.58
August 31, 201115.95
August 15, 201117.35
July 29, 201116.62
July 15, 201116.3
June 30, 201116.49
June 15, 201115.53
May 31, 201112.98
May 13, 201111.97
April 29, 201111.67
April 15, 201123.8
March 31, 201127.54
March 15, 201135.8
February 28, 201135.08
February 15, 201135.69
January 31, 201134.34
January 14, 201135.08
December 31, 201034.95
December 15, 201038.84
November 30, 201039.98
November 15, 201040.02
October 29, 201040.97
October 15, 201040.59
September 30, 201042.9
September 15, 201045.84
August 31, 201039.32
August 13, 201035.98
July 30, 201035.2
July 15, 201026.73
June 30, 201028.33
June 15, 201032.05
May 28, 201031.41
May 14, 201027.4
April 30, 201026.74
April 15, 201026.81
March 31, 201024.95
March 15, 201020.69
February 26, 201023.56
February 12, 201023.21
January 29, 201022.23
January 15, 201020.72
December 31, 200923.07
December 15, 200921.94
November 30, 200922.21
November 13, 200922.98
October 30, 200922.31
October 15, 200919.59
September 30, 200919.45
September 15, 200918.22
August 31, 200915.06
August 14, 200914.88
July 31, 200915.6
July 15, 200915.3
June 30, 200915.32
June 15, 200919.2
May 29, 200918.4
May 15, 200917.83
April 30, 200919.3
April 15, 200921.94
March 31, 200921.18
March 13, 200920.22
February 27, 200916.84
February 13, 200918.05
January 30, 200917.16
January 15, 200916.13
December 31, 200816.07
December 15, 200816.99
November 28, 200817.76
November 14, 200818.36
October 31, 200819.07
October 15, 200819.92
September 30, 200821.12
September 15, 200821.83
August 29, 200821.34
August 15, 200821.85
July 31, 200822.05
July 15, 200824.19
June 30, 200820.5
June 13, 200819.21
May 30, 200817.12
May 15, 200816.32
April 30, 200815.4
April 15, 200815.82
March 31, 200815.84
March 14, 200816.88
February 29, 200815.39
February 15, 200815.2
January 31, 200814.74
January 15, 200815.51
December 31, 200714.74
December 11, 200715.14
November 27, 200714.24
November 9, 200714.51
October 26, 200714.82
October 10, 200714.33
September 25, 200715.96
September 11, 200714.81
August 10, 200716.53
July 10, 200717.89
June 12, 200718.36
May 10, 200717.03
April 10, 200714.42
March 12, 200713.75
February 12, 200715.37
January 9, 200713.05
December 12, 200613.1
November 10, 200612.55
October 10, 200613.05
September 12, 200612.02
August 10, 200612.58
July 11, 200613.48
June 12, 200613.11
May 10, 200611.38
April 10, 200612.78
March 10, 200612.23
February 10, 200611.95
January 10, 200612.56
December 12, 20057.25
November 10, 20056.97
October 11, 20056.5
September 12, 20055.41
August 10, 20056.18
July 12, 20056.45
June 10, 20054.34
May 10, 20053.14
April 12, 20052.31
March 10, 20052.2
February 10, 20052.06
January 11, 20052.28
December 10, 20041.99
November 10, 20041.72
October 12, 20041.78
September 10, 20041.69
August 10, 20041.84
July 12, 20042.05
June 9, 20043.23
May 11, 20042.86
April 12, 20042.7
March 10, 20042.63
February 10, 20042.09
January 12, 20041.53
December 10, 20030.5
November 11, 20030.62
October 10, 20031.07
September 10, 20031.03
August 12, 20031.57
July 10, 20032.21
June 10, 20032.22
May 12, 20032.19
April 10, 20032.08
March 11, 20031.96
February 11, 20032.19
January 10, 20032.11
December 10, 20022.35
November 12, 20022.39
October 10, 20022.41
September 10, 20022.6
August 12, 20022.69
July 10, 20022.9
June 11, 20023.07
May 10, 20023.89
April 10, 20022.82
March 12, 20022.76
February 12, 20023.3
January 10, 20023.24
December 11, 20013.24
November 12, 20013.04
October 10, 20014.06
September 5, 20013.85
August 10, 20015.08
July 10, 20013.46
June 12, 20011.45
May 10, 20011.25
April 9, 20011.65
March 12, 20012.67
February 12, 20012.21
January 9, 20012.08
December 12, 20001.41
November 10, 20001.72
October 10, 20001.61
September 12, 20000.61

Institutional Ownership History (%)

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

Date Institutional Ownership
January 31, 201551
December 31, 201448
November 30, 201448
October 31, 201448
September 30, 201447
August 31, 201447
July 31, 201447
June 30, 201446
May 31, 201447
April 30, 201447
March 31, 201453
February 28, 201449
January 31, 201448
December 31, 201348
November 30, 201349
October 31, 201349
September 30, 201346
August 31, 201347
July 31, 201346
June 30, 201347
May 31, 201314
April 30, 201344
March 31, 201343
February 28, 201343
January 31, 201345
December 31, 201244
November 30, 201244
October 31, 201244
September 30, 201231
August 31, 201236
July 31, 201240
June 30, 201232
May 31, 201231
April 30, 201231
March 31, 201234
February 29, 201246
January 31, 201246
December 31, 201146
November 30, 201146
October 31, 201146
September 30, 201138
August 31, 201138
July 31, 201148
June 30, 201147
May 31, 201150
April 30, 201146
March 31, 201144
February 28, 201143
January 31, 201150
December 31, 201048
November 30, 201048
October 31, 201057
September 30, 201059
August 31, 201059
July 31, 201062
June 30, 201063
May 31, 201063
April 30, 201062
March 31, 201068
February 28, 201072
January 31, 201072
December 31, 200974
November 30, 200974
October 31, 200966
September 30, 200966
August 31, 200968
July 31, 200970
June 30, 200967
May 31, 200973
April 30, 200985
March 31, 200989
February 28, 200989
January 31, 200989
December 31, 200891
November 30, 200892
October 31, 200892
September 30, 200893
August 31, 200893
July 31, 200893
June 30, 200893
May 31, 200893
April 30, 200893
March 31, 200890
February 29, 200890
January 31, 200890

Insider ownership (%)

This is the historical insider ownership of Arena 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
January 31, 20151
December 31, 20141
November 30, 20141
October 31, 20141
September 30, 20141
August 31, 20141
July 31, 20141
June 30, 20141
May 31, 20141
March 31, 20141
February 28, 20141
January 31, 20141
December 31, 20131
November 30, 20131
October 31, 20131
September 30, 20131
August 31, 20131
July 31, 20131
June 30, 20131
May 31, 20131
April 30, 20131
March 31, 20131
January 31, 20131
November 30, 20121
October 31, 20121
September 30, 20121
August 31, 20121
July 31, 20121
June 30, 20121
May 31, 20121
April 30, 20121
March 31, 20121
February 29, 20121
January 31, 20121
December 31, 20111
November 30, 20111
October 31, 20111
September 30, 20111
August 31, 20111
July 31, 20111
June 30, 20111
May 31, 20111
April 30, 20111
March 31, 20111
February 28, 20111
January 31, 20111
December 31, 20101
November 30, 20101
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, 20092
August 31, 20092
July 31, 20092
June 30, 20092
May 31, 20092
April 30, 20092
March 31, 20092
February 28, 20092
January 31, 20092
December 31, 20082
November 30, 20082
October 31, 20082
September 30, 20082
August 31, 20082
July 31, 20082
June 30, 20082
May 31, 20082
April 30, 20081
March 31, 20081
February 29, 20081
January 31, 20081
December 31, 20071
November 30, 20071
October 31, 20071
September 30, 20072
August 31, 20072
July 31, 20072
June 30, 20072
May 31, 20072
April 30, 20072
March 31, 20072
February 28, 20072
January 31, 20072
December 31, 20062
November 30, 20062
October 31, 20062
September 30, 20062
June 30, 20062
May 31, 20062
April 30, 20062
March 31, 20062
February 28, 20062
January 31, 20062
December 31, 20052
November 30, 20053
October 31, 20054
September 30, 20054
August 31, 20054
July 31, 20054
June 30, 20054
May 31, 20055
April 30, 20055
March 31, 20055
February 28, 20054
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, 20047
March 31, 20046
February 29, 20047

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Dr. Dominic P. Behan,PhDEVP & Chief Scientific Officer508,0000.23%2014-12-15
Jack LiefChairman, President and CEO496,5640.23%2014-12-15
Dr. Derek T. Chalmers,PhDN/A370,6670.17%2004-06-11
Steven W. Spector,J.D.EVP, General Counsel & Sec128,039less than 0.1%2015-01-08
Dr. Harry F. HixsonDirector108,260less than 0.1%2014-06-13
Donald D. BelcherDirector94,112less than 0.1%2014-06-27
Joyce H. Williams,R.A.C.N/A74,198less than 0.1%2004-08-13
Nigel R.A. Beeley,PhDN/A70,907less than 0.1%2004-06-07
Dr. Christine A. White,M.D.N/A64,112less than 0.1%2014-06-13
Robert E. Hoffman,C.P.A.SVP, Finance and CFO58,074less than 0.1%2014-12-15

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Wellington Management Company LLP29,101,9192014-12-3113.220.03100,984,000
Vanguard Group, Inc.13,894,6112014-12-316.310.0048,214,000
BlackRock Fund Advisors8,182,9862014-12-313.720.0128,395,000
State Street Corp8,041,2572014-12-313.650.0027,905,000
Oppenheimer Global Opportunities7,000,0002014-12-313.180.7324,290,000
OppenheimerFunds, Inc.7,000,0002014-12-313.180.0324,290,000
Deerfield Management Co6,953,7372014-12-313.160.8724,129,000
SPDR® S&P Biotech ETF5,501,3702015-02-262.751.2626,131,508
Vanguard Small Cap Index4,288,8102015-01-311.950.0418,484,771
Vanguard Total Stock Mkt Idx4,140,6852015-01-311.880.0017,846,352

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