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Alkermes PLC (ALKS)Ownership Data

Short Interest History (%)

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

Date Short Interest
March 13, 20156.36
February 27, 20156.3
February 13, 20155.84
January 30, 20155.81
January 15, 20156.32
December 31, 20144.83
December 15, 20145.24
November 28, 20145.85
November 14, 20145.51
October 31, 20145.7
October 15, 20144.84
September 30, 20145.37
September 15, 20145.29
August 29, 20145.26
August 15, 20145.73
July 31, 20145.82
July 15, 20145.53
June 30, 20145.53
June 13, 20145.14
May 30, 20144.91
May 15, 20145.04
April 30, 20144.61
April 15, 20144.93
March 31, 20143.69
March 14, 20143.59
February 28, 20143.91
February 14, 20144.65
January 31, 20143.96
January 15, 20143.41
December 31, 20133.2
December 13, 20133.44
November 29, 20133.66
November 15, 20133.46
October 31, 20133
October 15, 20132.69
September 30, 20133.04
September 13, 20133.24
August 30, 20133.25
August 15, 20133.34
July 31, 20133.41
July 15, 20133.36
June 28, 20137.04
June 14, 20136.46
May 31, 20136
May 15, 20136
April 30, 20136.48
April 15, 20136.63
March 28, 20136.59
March 15, 20136.99
February 28, 20136.48
February 15, 20136.62
January 31, 20136.83
January 15, 20136.64
December 31, 20126.62
December 14, 20127.55
November 30, 20127.94
November 15, 20127.84
October 31, 20127.51
October 15, 20128.1
September 28, 20128.46
September 14, 20128.83
August 31, 20128.72
August 15, 20128.93
July 31, 20129.63
July 13, 20129.55
June 29, 201210.35
June 15, 20129.63
May 31, 20129.17
May 15, 20128.37
April 30, 20128.41
April 13, 20128.4
March 30, 20127.08
March 15, 20127.35
February 29, 20127.87
February 15, 20127.89
January 31, 20127.52
January 13, 20127.27
December 30, 20117.38
December 15, 20117.1
November 30, 20117.48
November 15, 20117.22
October 31, 20117.98
October 14, 20118.28
September 30, 20118.31
September 15, 20118.59
August 31, 20118.21
August 15, 20117.7
July 29, 20117.91
July 15, 20118.1
June 30, 20119.76
June 15, 201110.23
May 31, 201111.52
May 13, 20119.55
April 29, 201110.22
April 15, 20119.73
March 31, 20119.96
March 15, 201110.53
February 28, 20118.98
February 15, 20118.74
January 31, 20119.52
January 14, 20119.13
December 31, 20108.95
December 15, 20108.58
November 30, 20109.52
November 15, 201010.54
October 29, 201010.2
October 15, 201010.52
September 30, 201011.77
September 15, 201011.36
August 31, 201011.65
August 13, 201010.88
July 30, 201011.26
July 15, 201014.57
June 30, 201013.67
June 15, 201013.65
May 28, 201013.54
May 14, 201013.24
April 30, 201014.53
April 15, 201014.71
March 31, 201014
March 15, 201013.42
February 26, 201014.35
February 12, 201015.89
January 29, 201016.01
January 15, 201018.11
December 31, 200917.57
December 15, 200916.88
November 30, 200915.98
November 13, 200915.59
October 30, 200915.47
October 15, 200914.65
September 30, 200915.28
September 15, 200915.33
August 31, 200915.04
August 14, 200915.16
July 31, 200917.15
July 15, 20097.98
June 30, 20098.06
June 15, 20097.55
May 29, 20098.15
May 15, 20098.1
April 30, 20098.23
April 15, 20097.75
March 31, 20098.78
March 13, 20098.7
February 27, 20098.08
February 13, 20097.86
January 30, 20097.94
January 15, 20097.49
December 31, 20087.87
December 15, 20088.58
November 28, 20088.24
November 14, 20088.16
October 31, 20089.27
October 15, 20089.86
September 30, 200811.96
September 15, 200813.14
August 29, 200812.92
August 15, 200813.77
July 31, 200816.22
July 15, 200817.47
June 30, 200816.28
June 13, 200816.9
May 30, 200816.33
May 15, 200814.03
April 30, 200814.38
April 15, 200814.62
March 31, 200815.06
March 14, 200815.05
February 29, 200816.29
February 15, 200816.17
January 31, 200812.95
January 15, 200814.33
December 31, 200713.05
December 11, 200713.15
November 27, 200712.69
November 9, 200712.02
October 26, 20079.55
October 10, 20079.82
September 25, 200710.13
September 11, 200710.39
August 10, 200712.82
July 10, 200712.53
June 12, 200711.9
May 10, 200710.8
April 10, 200710.29
March 12, 200710.59
February 12, 20079.36
January 9, 20078.28
December 12, 20068.35
November 10, 20068.68
October 10, 20069.86
September 12, 20069.24
August 10, 20069.46
July 11, 200610.75
June 12, 200612.62
May 10, 200611.16
April 10, 200610.11
March 10, 200610.31
February 10, 20069.77
January 10, 200611.31
December 12, 20059.35
November 10, 20059.04
October 11, 20059.77
September 12, 20058.84
August 10, 20058.25
July 12, 20057.6
June 10, 20057.46
May 10, 20057.33
April 12, 20057.73
March 10, 20056.99
February 10, 20055.82
January 11, 20055.26
December 10, 20045.71
November 10, 20046.45
October 12, 20045.81
September 10, 20045.46
August 10, 20045.57
July 12, 20045.68
June 9, 20046.03
May 11, 20046.9
April 12, 20046.59
March 10, 20045.78
February 10, 20045.6
January 12, 20044.67
December 10, 20035.04
November 11, 20035.29
October 10, 20037.18
September 10, 20035.5
August 12, 20033.12
July 10, 200330.67
June 10, 200323.28
May 12, 200314.42
April 10, 200316.25
March 11, 200316.36
February 11, 200317.45
January 10, 200315.06
December 10, 20025.04
November 12, 20024.68
October 10, 20024.99
September 10, 20026.11
August 12, 20024.55
July 10, 20023.47
June 11, 20024.61
May 10, 20025
April 10, 20024.93
March 12, 20025.03
February 12, 20025.5
January 10, 20026.78
December 11, 20015.63
November 12, 20014.32
October 10, 20014.3
September 5, 20014.45
August 10, 20015.49
July 10, 20016
June 12, 20015.7
May 10, 20015.2
April 9, 20016.26
March 12, 20015.54
February 12, 200113.61
January 9, 200114.25
December 12, 200013.59
November 10, 200016.54
October 10, 200016.94
September 12, 200015.92
August 10, 200015.64
July 11, 200015.95
June 12, 200016.42
May 10, 200016.74
April 11, 200014.41
March 10, 200016.73
February 10, 200013.89
January 11, 200014.57
December 10, 199914.36
November 10, 199914.49
October 12, 199914.1
September 10, 199913.08
August 10, 199913.67
July 12, 199912.31
June 10, 199912.67
May 11, 199914.67
April 12, 199915.67
March 10, 199915.47
February 9, 199915.16
January 8, 199914
December 8, 199812.59
November 6, 199813.34
October 8, 199811.11
September 8, 19987.56
August 7, 19986.7
July 8, 19986.54
June 8, 19986.96
May 8, 19987.12
April 7, 19986.56
March 6, 19983.76
February 6, 19980.63
January 8, 19980.5
December 8, 19970.42
November 7, 19970.8
October 8, 19970.59
September 8, 19971.04
August 8, 19970.96
July 8, 19970.94
June 6, 19971.1
May 8, 19971.34
April 8, 19971.3
March 7, 19971.67
February 7, 19971.26
January 8, 19971.72
December 6, 19961.49
November 8, 19961.18
October 8, 19961.14
September 6, 19960.53
August 8, 19960.73
July 8, 19960.44
June 7, 19960.51
May 8, 19960.4
April 8, 19960.36
March 8, 19960.33
February 8, 19960.33
January 8, 19960.37
December 8, 19950.39
November 8, 19950.38
October 6, 19950.38
September 8, 19950.56
August 8, 19950.7
July 7, 19950.47
June 8, 19950.44
May 8, 19950.42
April 6, 19950.42
March 8, 19950.42
February 8, 19950.43
January 6, 19950.76

Institutional Ownership History (%)

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

Date Institutional Ownership
February 28, 2015100
January 31, 201599
December 31, 201499
November 30, 201499
October 31, 201499
September 30, 201499
August 31, 201499
July 31, 201499
June 30, 201497
May 31, 201498
April 30, 201498
March 31, 201491
February 28, 201492
January 31, 201492
December 31, 201392
November 30, 201394
October 31, 201394
September 30, 201396
August 31, 201397
July 31, 201396
June 30, 201396
May 31, 201310
April 30, 201393
March 31, 201388
February 28, 201389
January 31, 201390
December 31, 201298
November 30, 201298
October 31, 201296
September 30, 2012100
August 31, 201298
July 31, 201297
June 30, 201295
May 31, 201294
April 30, 201294
March 31, 201283
February 29, 201278
January 31, 201295
December 31, 201173
November 30, 201173
October 31, 201173
July 31, 201193
June 30, 201195
May 31, 201196
April 30, 201197
March 31, 201193
February 28, 201193
January 31, 2011100
December 31, 201095
November 30, 201095
October 31, 201099
September 30, 201098
August 31, 201098
July 31, 201097
June 30, 201097
May 31, 2010100
January 31, 201097
December 31, 200998
November 30, 200998
October 31, 200999
September 30, 200999
August 31, 200999
April 30, 200999
March 31, 200998
February 28, 200998

Insider ownership (%)

This is the historical insider ownership of Alkermes PLC. 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
February 28, 20151
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, 20142
January 31, 20142
December 31, 20132
November 30, 20132
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
August 31, 20112
July 31, 20112
June 30, 20112
May 31, 20112
April 30, 20113
March 31, 20113
February 28, 20113
January 31, 20113
December 31, 20103
November 30, 20103
October 31, 20102
September 30, 20102
August 31, 20103
July 31, 20103
June 30, 20103
May 31, 20103
April 30, 20103
March 31, 20103
February 28, 20103
January 31, 20103
December 31, 20093
November 30, 20093
October 31, 20093
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, 20083
October 31, 20083
September 30, 20083
August 31, 20083
July 31, 20083
June 30, 20083
May 31, 20083
April 30, 20082
March 31, 20082
February 29, 20082
January 31, 20082
December 31, 20072
November 30, 20072
October 31, 20072
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, 20063
April 30, 20062
March 31, 20062
February 28, 20062
January 31, 20062
December 31, 20052
November 30, 20052
October 31, 20052
September 30, 20052
August 31, 20052
July 31, 20052
June 30, 20052
May 31, 20052
April 30, 20052
March 31, 20053
February 28, 20053
January 31, 20053
December 31, 20043
November 30, 20043
October 31, 20043
September 30, 20043
August 31, 20043
July 31, 20043
June 30, 20043
May 31, 20043
April 30, 20043
March 31, 20043
February 29, 20043

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Richard F. PopsDirector and CEO, Alkermes plc526,9400.36%2015-03-03
Dr. Paul R. Schimmel,PhDDirector360,6000.24%2007-06-15
Michael J. LandineSVP, Corp Dev., Alkermes, Inc.132,419less than 0.1%2015-03-03
David A. BroeckerN/A106,616less than 0.1%2009-06-16
Dr. Floyd E Bloom M.D.Director90,281less than 0.1%2015-01-15
Kathryn BibersteinSVP, GC, Secretary, Alks, Inc.81,513less than 0.1%2015-03-03
James M. FratesSVP & CFO, Alkermes plc78,649less than 0.1%2015-03-10
Robert A. BreyerDirector53,156less than 0.1%2015-03-02
Shane M CookePresident, Alkermes plc35,180less than 0.1%2015-03-23
Dr. Elliot W. EhrichEVP, R&D & CMO, Alkermes, Inc.24,956less than 0.1%2015-03-16

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Fidelity Management and Research Company21,896,2982014-12-3114.840.181,282,247,000
Wellington Management Company LLP20,442,6992014-12-3113.860.321,197,124,000
T. Rowe Price Associates, Inc.16,184,0682014-12-3110.970.20947,739,000
Fidelity® Growth Company Fund10,522,4562015-01-317.131.81760,247,446
Vanguard Group, Inc.8,831,3022014-12-315.990.04517,161,000
Invesco Asset Management Ltd.6,730,7282014-12-314.563.09394,151,000
Vanguard Health Care Fund6,226,3832014-12-314.220.82364,616,988
T. Rowe Price Mid Cap Growth Fund5,250,0002014-12-313.561.27307,440,000
Invesco Advisers, Inc4,781,8022014-12-313.240.18280,023,000
TIAA-CREF Investment Management LLC4,584,5082014-12-313.110.19268,469,000

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