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Amkor Technology Inc (AMKR)Ownership Data

Short Interest History (%)

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

Date Short Interest
January 15, 20153.46
December 31, 20143.7
December 15, 20144.82
November 28, 20145.39
November 14, 20145.56
October 31, 20146.39
October 15, 20147.31
September 30, 20147.86
September 15, 20147.91
August 29, 20149.37
August 15, 20149.41
July 31, 20148.83
July 15, 20147.61
June 30, 201412.56
June 13, 201413.77
May 30, 201412.38
May 15, 201411.77
April 30, 201410.73
April 15, 201415.4
March 31, 201415.21
March 14, 201417.97
February 28, 201418.43
February 14, 201418.32
January 31, 201417.98
January 15, 201417.84
December 31, 201317.6
December 13, 201317.5
November 29, 201317.81
November 15, 201317.75
October 31, 201317.34
October 15, 201316.7
September 30, 201317.63
September 13, 201317.47
August 30, 201318.3
August 15, 201318.42
July 31, 201318.64
July 15, 201319.06
June 28, 201318.62
June 14, 201327.32
May 31, 201326.93
May 15, 201326.42
April 30, 201328.02
April 15, 201328.02
March 28, 201328.47
March 15, 201328.22
February 28, 201324.51
February 15, 201320.84
January 31, 201320.88
January 15, 201320.61
December 31, 201220.01
December 14, 201219.88
November 30, 201220.04
November 15, 201219.34
October 31, 201219.64
October 15, 201219.79
September 28, 201219.88
September 14, 201219.91
August 31, 201219.72
August 15, 201220.64
July 31, 201218.91
July 13, 201218.45
June 29, 201218.85
June 15, 201219.18
May 31, 201219.4
May 15, 201219.6
April 30, 201216.78
April 13, 201217.01
March 30, 201217.19
March 15, 201217.95
February 29, 201218.18
February 15, 201218.31
January 31, 201218.81
January 13, 201216.9
December 30, 201116.57
December 15, 201117.38
November 30, 201117.94
November 15, 201116.79
October 31, 201117.97
October 14, 201117.73
September 30, 201120.81
September 15, 201120.55
August 31, 201118.72
August 15, 201117.59
July 29, 201116.25
July 15, 201117
June 30, 201118.51
June 15, 201118.64
May 31, 201117.54
May 13, 201116.78
April 29, 201116.27
April 15, 201116.42
March 31, 201116.36
March 15, 201116.5
February 28, 201112.91
February 15, 201113.11
January 31, 201113.43
January 14, 201113.92
December 31, 201014.62
December 15, 201015.91
November 30, 201014.62
November 15, 201014.35
October 29, 201014.22
October 15, 201014.62
September 30, 201018.42
September 15, 201019.41
August 31, 201019.78
August 13, 201021.17
July 30, 201021.48
July 15, 201023.28
June 30, 201023.6
June 15, 201024.59
May 28, 201024.06
May 14, 201023.51
April 30, 201022.68
April 15, 201021.82
March 31, 201021.4
March 15, 201021.58
February 26, 201012.03
February 12, 201011.46
January 29, 201011.67
January 15, 201010.43
December 31, 200910.18
December 15, 200910.56
November 30, 200910.63
November 13, 200910.72
October 30, 200911.43
October 15, 200913.5
September 30, 200910.6
September 15, 200910.58
August 31, 200910.87
August 14, 200910.64
July 31, 20099.94
July 15, 200910.38
June 30, 200910.16
June 15, 20098.99
May 29, 20098.01
May 15, 20096.59
April 30, 20095.92
April 15, 20095.09
March 31, 20094.13
March 13, 20093.4
February 27, 20092.98
February 13, 20092.98
January 30, 20092.9
January 15, 20093.62
December 31, 20083.83
December 15, 20084.31
November 28, 20085.08
November 14, 20085.33
October 31, 20087.69
October 15, 20088.75
September 30, 20088.76
September 15, 200811.19
August 29, 200811.62
August 15, 200813.22
July 31, 200812.36
July 15, 200813.24
June 30, 200810.93
June 13, 200811.6
May 30, 200811.54
May 15, 200810.53
April 30, 200810.91
April 15, 200810.92
March 31, 200810.8
March 14, 20088.99
February 29, 20088.14
February 15, 20087.32
January 31, 20087.28
January 15, 20087.41
December 31, 20076.77
December 11, 20077.55
November 27, 20078.02
November 9, 20078.09
October 26, 20077.48
October 10, 20077.63
September 25, 20078.16
September 11, 20078.81
August 10, 200710.51
July 10, 200710.46
June 12, 20079.97
May 10, 20078.35
April 10, 20078.26
March 12, 20077.33
February 12, 20077.07
January 9, 20076.85
December 12, 20066.5
November 10, 20065.37
October 10, 20067.66
September 12, 20067.93
August 10, 20067.74
July 11, 20067.84
June 12, 20068.93
May 10, 20067.24
April 10, 20066.02
March 10, 20065.44
February 10, 20064.43
January 10, 20065.69
December 12, 20056.59
November 10, 20056.57
October 11, 20057.97
September 12, 20058.11
August 10, 20057.88
July 12, 20056.7
June 10, 20055.91
May 10, 20054.94
April 12, 20054.6
March 10, 20054.23
February 10, 20053.82
January 11, 20053.47
December 10, 20043.38
November 10, 20044.02
October 12, 20044.96
September 10, 20043.46
August 10, 20042.75
July 12, 20043.1
June 9, 20043.05
May 11, 20042.17
April 12, 20041.32
March 10, 20041.34
February 10, 20041.32
January 12, 20041.53
December 10, 20031.91
November 11, 20032.04
October 10, 20032.48
September 10, 20032.53
August 12, 20032.79
July 10, 20032.9
June 10, 20032.95
May 12, 20032.7
April 10, 20032.81
March 11, 20032.88
February 11, 20033.02
January 10, 20033.24
December 10, 20022.95
November 12, 20024.12
October 10, 20024.65
September 10, 20024.26
August 12, 20023.26
July 10, 20022.77
June 11, 20022.49
May 10, 20022.86
April 10, 20023.82
March 12, 20023.51
February 12, 20022.49
January 10, 20022.79
December 11, 20012.34
November 12, 20012.83
October 10, 20012.56
September 5, 20013.02
August 10, 20013.49
July 10, 20013.56
June 12, 20014.04
May 10, 20013.4
April 9, 20012.89
March 12, 20013.4
February 12, 20012.68
January 9, 20012.94
December 12, 20002.4
November 10, 20002.52
October 10, 20003.16
September 12, 20002.84
August 10, 20002.86
July 11, 20002.68
June 12, 20002.39
May 10, 20001.49
April 11, 20002.14
March 10, 20001.73
February 10, 20001.41
January 11, 20001.03
December 10, 19993.06
November 10, 19993.29
October 12, 19997.56
September 10, 19997.98
August 10, 19997.11
July 12, 19994.36
June 10, 19993.74
May 11, 19994.09
April 12, 19994.21
March 10, 19993.76
February 9, 19994.05
January 8, 19994.31
December 8, 19983.45
November 6, 19982.29
October 8, 19982.49
September 8, 19982.43
August 7, 19982.48
July 8, 19983.38
June 8, 19983.19

Institutional Ownership History (%)

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

Date Institutional Ownership
December 31, 201438
November 30, 201438
October 31, 201438
September 30, 201438
August 31, 201438
July 31, 201438
June 30, 201436
May 31, 201434
April 30, 201434
March 31, 201438
February 28, 201475
January 31, 201474
December 31, 201337
November 30, 201373
October 31, 201373
September 30, 201373
August 31, 201373
July 31, 201373
March 31, 201362
February 28, 201343
January 31, 201344
December 31, 201246
June 30, 201156
May 31, 201158
April 30, 201155
March 31, 201154
February 28, 201154
January 31, 201157
December 31, 201055
November 30, 201057
October 31, 201059
September 30, 201059
August 31, 201059
July 31, 201058
June 30, 201059
May 31, 201062
April 30, 201056
March 31, 201058
February 28, 201057
January 31, 201055
December 31, 200956
November 30, 200955
October 31, 200955
September 30, 200953
August 31, 200953
July 31, 200947
June 30, 200947
May 31, 200947
April 30, 200949
March 31, 200955
February 28, 200948
January 31, 200955
December 31, 200859
November 30, 200859
October 31, 200862
September 30, 200859
August 31, 200859
July 31, 200859
June 30, 200863
May 31, 200863
April 30, 200863
March 31, 200864
February 29, 200864
January 31, 200864

Insider ownership (%)

This is the historical insider ownership of Amkor Technology 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
December 31, 201433
November 30, 201420
October 31, 201420
September 30, 201420
August 31, 201452
July 31, 201452
June 30, 201452
May 31, 201452
March 31, 201462
February 28, 201462
January 31, 201439
December 31, 201339
November 30, 201339
October 31, 201339
September 30, 201339
August 31, 201339
July 31, 201339
June 30, 201339
May 31, 201339
April 30, 201339
March 31, 201339
January 31, 201211
December 31, 201111
November 30, 201111
October 31, 201111
September 30, 201111
August 31, 201111
July 31, 201111
June 30, 201111
May 31, 201111
April 30, 201111
March 31, 201111
February 28, 201111
January 31, 20117
December 31, 20107
November 30, 20107
October 31, 20107
September 30, 20107
August 31, 20107
July 31, 20107
June 30, 20107
May 31, 20107
April 30, 20107
March 31, 20107
February 28, 20107
January 31, 20107
December 31, 20097
November 30, 20097
October 31, 20097
September 30, 20097
August 31, 20097
July 31, 20097
June 30, 20097
May 31, 20097
April 30, 20097
March 31, 20097
February 28, 20097
January 31, 20097
December 31, 20087
November 30, 200812
October 31, 200812
September 30, 200812
August 31, 200812
July 31, 200812
June 30, 200812
May 31, 200812

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Kim Susan Y46,759,50319.71%2013-12-31
John T. KimDirector, 10% Owner14,207,3445.99%2004-05-17
Mr. Stephen D. KelleyPresident and CEO620,7800.26%2014-11-08
John B. NeffDirector200,000less than 0.1%2004-04-30
Kenneth T. JoyceCFO162,190less than 0.1%2012-11-06
Gil C. TilyN/A69,119less than 0.1%2014-11-14
Lamble MikeExecutive Vice President65,963less than 0.1%2012-11-01
Joanne SolomonExecutive VP & CFO62,345less than 0.1%2014-11-14
James J. KimN/A60,000less than 0.1%2014-09-09
John N. BoruchVice Chairman48,095less than 0.1%2005-04-29

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value
Vanguard Group, Inc.7,293,6622014-09-303.080.0061,340,000
Acadian Asset Management LLC7,025,3202014-12-312.960.2249,881,000
LSV Asset Management6,781,4612014-09-302.870.1257,032,000
Dimensional Fund Advisors, Inc.5,387,2102014-09-302.280.0345,309,000
Kim Family Trusts5,168,2452014-02-282.370.0030,596,010
Navellier & Associates Inc3,911,8522014-09-301.651.6532,899,000
BlackRock Fund Advisors3,788,7472014-09-301.600.0031,863,000
APG Asset Management2,934,5362014-09-301.240.0524,679,000
Renaissance Technologies Corp2,690,5002014-09-301.140.0622,627,000
Northern Trust Investments, N.A.2,586,6312014-09-301.090.0121,754,000

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