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Merck & Co Inc (MRK) Ownership Data

Short Interest History (%)

This is the historical short interest of Merck & Co Inc, as measured by the Short Percentage Of Float.

Date Short Interest
July 15, 20151.04
June 30, 20151.16
June 15, 20151.14
May 29, 20151.11
May 15, 20151.13
April 30, 20151.11
April 15, 20151.04
March 31, 20151.13
March 13, 20150.97
February 27, 20150.87
February 13, 20150.77
January 30, 20150.77
January 15, 20150.98
December 31, 20140.97
December 15, 20140.98
November 28, 20140.72
November 14, 20140.77
October 31, 20140.78
October 15, 20140.83
September 30, 20140.79
September 15, 20140.84
August 29, 20140.92
August 15, 20140.95
July 31, 20141.14
July 15, 20141.16
June 30, 20141.17
June 13, 20141.14
May 30, 20141
May 15, 20141.05
April 30, 20141.04
April 15, 20141.11
March 31, 20140.98
March 14, 20140.98
February 28, 20140.92
February 14, 20140.92
January 31, 20140.8
January 15, 20140.81
December 31, 20130.85
December 13, 20131.01
November 29, 20131.04
November 15, 20130.85
October 31, 20130.97
October 15, 20131.09
September 30, 20131.13
September 13, 20131.13
August 30, 20131.28
August 15, 20131.68
July 31, 20131.98
July 15, 20132.53
June 28, 20132.46
June 14, 20132.73
May 31, 20133.09
May 15, 20130.77
April 30, 20130.88
April 15, 20130.95
March 28, 20130.71
March 15, 20130.86
February 28, 20130.91
February 15, 20130.73
January 31, 20130.7
January 15, 20130.73
December 31, 20120.6
December 14, 20120.83
November 30, 20120.78
November 15, 20120.84
October 31, 20120.89
October 15, 20120.76
September 28, 20120.72
September 14, 20120.82
August 31, 20120.79
August 15, 20120.95
July 31, 20120.86
July 13, 20120.97
June 29, 20120.85
June 15, 20120.77
May 31, 20120.7
May 15, 20120.56
April 30, 20120.62
April 13, 20120.63
March 30, 20120.53
March 15, 20120.63
February 29, 20120.76
February 15, 20120.81
January 31, 20120.93
January 13, 20121.17
December 30, 20111.01
December 15, 20111
November 30, 20111.01
November 15, 20111
October 31, 20110.95
October 14, 20111.13
September 30, 20111.25
September 15, 20111.41
August 31, 20111.19
August 15, 20110.97
July 29, 20110.76
July 15, 20110.76
June 30, 20110.73
June 15, 20110.83
May 31, 20110.88
May 13, 20110.98
April 29, 20110.78
April 15, 20110.68
March 31, 20110.67
March 15, 20110.55
February 28, 20110.52
February 15, 20110.52
January 31, 20110.5
January 14, 20110.7
December 31, 20100.68
December 15, 20100.78
November 30, 20100.69
November 15, 20100.58
October 29, 20100.65
October 15, 20100.73
September 30, 20100.82
September 15, 20100.9
August 31, 20100.89
August 13, 20100.86
July 30, 20100.98
July 15, 20101.18
June 30, 20101.21
June 15, 20101.15
May 28, 20100.77
May 14, 20100.59
April 30, 20100.74
April 15, 20100.58
March 31, 20100.73
March 15, 20100.72
February 26, 20100.69
February 12, 20100.72
January 29, 20100.86
January 15, 20100.81
December 31, 20090.74
December 15, 20091
November 30, 20091.76
November 13, 20092.25
October 30, 20099.79
October 15, 20099.26
September 30, 20098.5
September 15, 20098.15
August 31, 20098.12
August 14, 20097.62
July 31, 20097.87
July 15, 20097.47
June 30, 20096.94
June 15, 20096.36
May 29, 20095.4
May 15, 20094.67
April 30, 20094.35
April 15, 20093.04
March 31, 20092.65
March 13, 20092.03
February 27, 20091.52
February 13, 20091.48
January 30, 20091.1
January 15, 20091.24
December 31, 20081.22
December 15, 20081.11
November 28, 20081
November 14, 20080.9
October 31, 20080.9
October 15, 20080.91
September 30, 20080.87
September 15, 20080.96
August 29, 20080.97
August 15, 20080.94
July 31, 20080.95
July 15, 20081.02
June 30, 20080.91
June 13, 20080.83
May 30, 20080.81
May 15, 20080.96
April 30, 20080.74
April 15, 20080.98
March 31, 20081
March 14, 20080.88
February 29, 20080.84
February 15, 20080.89
January 31, 20080.65
January 15, 20080.97
December 31, 20070.96
December 11, 20071.03
November 27, 20071.17
November 9, 20071.02
October 26, 20071.1
October 10, 20070.94
September 25, 20071.05
September 11, 20070.89
August 10, 20070.95
July 10, 20071
June 12, 20071.05
May 10, 20071.04
April 10, 20070.86
March 12, 20070.93
February 12, 20071.03
January 9, 20071.63
December 12, 20061.48
November 10, 20061.65
October 10, 20061.72
September 12, 20061.71
August 10, 20061.38
July 11, 20061.44
June 12, 20061.1
May 10, 20061.05
April 10, 20061.23
March 10, 20061.08
February 10, 20060.98
January 10, 20061.35
December 12, 20051.14
November 10, 20051.15
October 11, 20051
September 12, 20050.94
August 10, 20050.91
July 12, 20050.95
June 10, 20050.64
May 10, 20050.84
April 12, 20051.04
March 10, 20051.07
February 10, 20050.77
January 11, 20050.85
December 10, 20040.85
November 10, 20040.86
October 12, 20040.68
September 10, 20040.62
August 10, 20040.69
July 12, 20040.64
June 9, 20040.67
May 11, 20040.65
April 12, 20040.67
March 10, 20040.62
February 10, 20040.57
January 12, 20040.58
December 10, 20030.48
November 11, 20030.6
October 10, 20030.69
September 10, 20030.66
August 12, 20030.67
July 10, 20030.87
June 10, 20030.73
May 12, 20030.86
April 10, 20030.84
March 11, 20030.83
February 11, 20030.82
January 10, 20031
December 10, 20020.87
November 12, 20020.93
October 10, 20020.94
September 10, 20020.77
August 12, 20021.02
July 10, 20020.87
June 11, 20021
May 10, 20021.14
April 10, 20020.94
March 12, 20020.8
February 12, 20020.78
January 10, 20020.7
December 11, 20010.61
November 12, 20010.7
October 10, 20010.74
September 5, 20010.69
August 10, 20010.9
July 10, 20010.88
June 12, 20010.73
May 10, 20010.69
April 9, 20010.69
March 12, 20010.63
February 12, 20010.75
January 9, 20010.82
December 12, 20000.94
November 10, 20000.98
October 10, 20000.71
September 12, 20000.59
August 10, 20000.62
July 11, 20000.6
June 12, 20000.62
May 10, 20000.57
April 11, 20000.53
March 10, 20000.62
February 10, 20000.46
January 11, 20000.52
December 10, 19990.55
November 10, 19990.64
October 12, 19990.61
September 10, 19990.53
August 10, 19990.55
July 12, 19990.66
June 10, 19990.64
May 11, 19990.58
April 12, 19990.71
March 10, 19990.76
February 9, 19990.69
January 8, 19990.79
December 8, 19980.87
November 6, 19980.92
October 8, 19980.9
September 8, 19980.79
August 7, 19980.76
July 8, 19980.8
June 8, 19980.75
May 8, 19980.64
April 7, 19980.69
March 6, 19980.76
February 6, 19980.72
January 8, 19980.68
December 8, 19970.76
November 7, 19970.72
October 8, 19970.75
September 8, 19970.76
August 8, 19970.74
July 8, 19970.82
June 6, 19970.88
May 8, 19970.87
April 8, 19970.82
March 7, 19970.85
February 7, 19970.94
January 8, 19970.95
December 6, 19960.83
November 8, 19960.92
October 8, 19960.77
September 6, 19960.83
August 8, 19960.76
July 8, 19960.58
June 7, 19960.67
May 8, 19960.71
April 8, 19960.67
March 8, 19960.55
February 8, 19960.68
January 8, 19960.67
December 8, 19950.87
November 8, 19950.74
October 6, 19951.01
September 8, 19950.86
August 8, 19950.77
July 7, 19950.98
June 8, 19951.22
May 8, 19951.17
April 6, 19951.18
March 8, 19951.16
February 8, 19950.99
January 6, 19950.93

Institutional Ownership History (%)

This the Institutional Ownership History of Merck & Co IncPeter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership
June 30, 201579
March 31, 201575
December 31, 201476
September 30, 201473
June 30, 201474
March 31, 201475
December 31, 201376
September 30, 201375
June 30, 201376
March 31, 201375
December 31, 201276
September 30, 201275
June 30, 201275
March 31, 201275
December 31, 201176
September 30, 201174
June 30, 201174
March 31, 201173
December 31, 201076
September 30, 201074
June 30, 201076
March 31, 201075
December 31, 200983
September 30, 200981
June 30, 200981
March 31, 200987
December 31, 200875
September 30, 200873
June 30, 200873
March 31, 200875
December 31, 200774
September 30, 200772
June 30, 200771
March 31, 200781
December 31, 200674
September 30, 200674
June 30, 200671
March 31, 200670
December 31, 200567
September 30, 200563
June 30, 200563
March 31, 200564
December 31, 200462
September 30, 200461
June 30, 200458
March 31, 200460
December 31, 200395
September 30, 200363
December 31, 200263
September 30, 200261
March 31, 200264
December 31, 200159
September 30, 200160
June 30, 200160
March 31, 200178
December 31, 200082
September 30, 200082
June 30, 200081
March 31, 200082

Insider ownership (%)

This is the historical insider ownership of Merck & Co 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.

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Kenneth C. FrazierChairman, President & CEO438,236less than 0.1%2015-05-01
Peter S. KimExe V-P & Pres, MRL189,609less than 0.1%2013-02-25
Bruce N. KuhlikExe V-P & Gen Counsel150,432less than 0.1%2015-05-01
Peter N. KelloggExe V-P & CFO149,554less than 0.1%2014-02-24
Willie A. DeeseExe V-P & Pres. MMD119,193less than 0.1%2015-05-01
Mirian M. Graddick-WeirExe V-P, HR111,846less than 0.1%2015-05-01
Mr. Richard T. ClarkN/A108,211less than 0.1%2011-02-28
J. Chris ScaletN/A79,829less than 0.1%2012-04-24
Mr. Erskine B. BowlesN/A73,540less than 0.1%2012-05-10
Raul E. KohanExe V-P & Pres, Animal Health70,990less than 0.1%2011-12-31

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Wellington Management Company LLP   Premium Plus165,795,7452015-03-315.862.459,529,938
Capital World Investors   Premium Plus164,402,7402015-03-315.812.559,449,869
Vanguard Group, Inc.   Premium Plus162,559,8142015-03-315.750.639,343,938
State Street Corp   Premium Plus123,938,8712015-03-314.380.737,123,994
BlackRock Fund Advisors   Premium Plus87,235,8722015-03-313.080.705,014,318
Vanguard Total Stock Mkt Idx50,224,6432015-06-301.780.712,859,289
VA CollegeAmerica Income Fund of America50,113,6402015-06-301.773.142,852,970
VA CollegeAmerica Washington Mutual41,744,4002015-06-301.483.192,376,509
Northern Trust Investments, N.A.   Premium Plus40,997,8222015-03-311.450.702,356,554
Vanguard Health Care Fund40,096,9482015-03-311.424.622,304,773

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