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Ultra Clean Holdings Inc (UCTT) Ownership Data

Short Interest History (%)

This is the historical short interest of Ultra Clean Holdings Inc, as measured by the Short Percentage Of Float.

Date Short Interest (%)Short Interest (Shares in Mil)
August 31, 20177.132.07
August 15, 20177.272.11
July 31, 20174.471.30
July 14, 20173.481.01
June 30, 20173.210.93
June 15, 20175.431.58
May 31, 20175.791.68
May 15, 20173.941.15
April 28, 20173.621.05
April 13, 20174.291.24
March 31, 20174.321.25
March 15, 20173.120.99
February 28, 20172.790.88
February 15, 20172.970.94
January 31, 20172.870.91
January 13, 20172.480.79
December 30, 20162.070.66
December 15, 20161.830.58
November 30, 20162.250.71
November 15, 20162.730.86
October 31, 20161.860.59
October 14, 20161.860.59
September 30, 20161.820.58
September 15, 20162.030.64
August 31, 20162.520.80
August 15, 20162.670.85
July 29, 20163.060.97
July 15, 20163.171.00
June 30, 20163.130.99
June 15, 20163.231.02
May 31, 20163.381.07
May 13, 20163.221.02
April 29, 20163.161.00
April 15, 20163.441.09
March 31, 20163.341.06
March 15, 20163.61.11
February 29, 20163.641.12
February 12, 20163.821.17
January 29, 20163.981.22
January 15, 20164.341.34
December 31, 20154.821.48
December 15, 20155.111.57
November 30, 20155.241.61
November 13, 20154.581.41
October 30, 20154.211.29
October 15, 20153.991.23
September 30, 20153.831.18
September 15, 20154.021.24
August 31, 20153.461.07
August 14, 20153.090.95
July 31, 20153.961.22
July 15, 20153.871.19
June 30, 20154.071.25
June 15, 20153.831.18
May 29, 20153.140.97
May 15, 20153.020.93
April 30, 20152.020.62
April 15, 20151.710.53
March 31, 20151.970.61
March 13, 20151.980.58
February 27, 20152.090.61
February 13, 20152.140.63
January 30, 20152.320.68
January 15, 20152.350.69
December 31, 20142.520.74
December 15, 20143.030.89
November 28, 20143.210.94
November 14, 20143.150.92
October 31, 20143.541.04
October 15, 20143.861.13
September 30, 20143.240.95
September 15, 20143.070.90
August 29, 20142.910.86
August 15, 20143.040.89
July 31, 20142.890.85
July 15, 20143.190.94
June 30, 20143.080.90
June 13, 20143.120.92
May 30, 20142.950.87
May 15, 20143.260.96
April 30, 20145.191.53
April 15, 20144.661.37
March 31, 20143.070.90
March 14, 20143.070.70
February 28, 20141.590.36
February 14, 20141.250.29
January 31, 20141.010.23
January 15, 20140.670.15
December 31, 20130.740.17
December 13, 20130.670.15
November 29, 20130.720.16
November 15, 20130.660.15
October 31, 20130.770.18
October 15, 20130.890.20
September 30, 20130.890.20
September 13, 20131.080.25
August 30, 20131.170.27
August 15, 20130.960.22
July 31, 20131.050.24
July 15, 20131.220.28
June 28, 20131.950.45
June 14, 20131.710.39
May 31, 20131.50.34
May 15, 20131.650.38
April 30, 20132.110.48
April 15, 20131.590.36
March 28, 20131.610.37
March 15, 20132.130.36
February 28, 20132.30.39
February 15, 20132.270.39
January 31, 20132.310.39
January 15, 20132.20.38
December 31, 20122.380.41
December 14, 20122.260.39
November 30, 20122.640.45
November 15, 20122.70.46
October 31, 20122.60.44
October 15, 20122.590.44
September 28, 20122.890.49
September 14, 20123.520.60
August 31, 20123.770.64
August 15, 20124.060.69
July 31, 20124.480.76
July 13, 20124.780.82
June 29, 20125.20.89
June 15, 20124.440.76
May 31, 20124.490.77
May 15, 20123.90.67
April 30, 20123.60.62
April 13, 20123.270.56
March 30, 20122.870.49
March 15, 20124.50.63
February 29, 20124.320.60
February 15, 20124.370.61
January 31, 20124.910.69
January 13, 20125.830.81
December 30, 20116.330.88
December 15, 20116.650.93
November 30, 201170.98
November 15, 20116.850.96
October 31, 20116.730.94
October 14, 20116.960.97
September 30, 20118.231.15
September 15, 20117.621.06
August 31, 20117.040.98
August 15, 20117.231.01
July 29, 20116.880.96
July 15, 20116.980.97
June 30, 20117.551.05
June 15, 20118.451.18
May 31, 20119.341.30
May 13, 20119.751.36
April 29, 2011101.40
April 15, 201110.931.53
March 31, 20119.791.37
March 15, 20118.561.29
February 28, 20118.821.33
February 15, 20116.941.05
January 31, 20117.71.16
January 14, 20116.340.96
December 31, 20105.730.86
December 15, 20105.710.86
November 30, 20105.940.90
November 15, 20105.740.86
October 29, 20105.270.79
October 15, 20104.80.72
September 30, 20105.140.78
September 15, 20105.830.88
August 31, 20106.130.92
August 13, 20105.350.81
July 30, 20105.910.89
July 15, 20106.020.91
June 30, 20106.891.04
June 15, 20101.40.21
May 28, 20102.120.32
May 14, 20102.680.40
April 30, 20102.110.32
April 15, 20101.210.18
March 31, 20100.980.15

Institutional Ownership History (%)

This the Institutional Ownership History of Ultra Clean Holdings IncPeter Lynch prefers to buy companies with low institutional ownership.

Date Institutional Ownership (%)Institutional Ownership (Shares in Mil)
June 30, 201734.1311.45
March 31, 201775.3425.19
December 31, 201673.923.91
September 30, 201665.2721.09
June 30, 201664.2321.00
March 31, 201663.2820.57
December 31, 201574.5823.62
September 30, 201568.5222.10
June 30, 201576.3724.23
March 31, 201574.2223.37
December 31, 201476.1522.51
September 30, 201479.9723.61
June 30, 201477.7422.94
March 31, 201487.9125.80
December 31, 201369.9420.07
September 30, 201369.3219.76
June 30, 201368.5819.09
March 31, 201368.1319.28
December 31, 201269.1919.31
September 30, 201288.1423.98
June 30, 201285.2219.88
March 31, 201280.3418.70
December 31, 201185.119.50
September 30, 201184.1219.22
June 30, 201186.7219.73
March 31, 201191.1420.71
December 31, 201083.2918.57
September 30, 201082.4118.10
June 30, 201086.4118.70
March 31, 201078.5916.98
December 31, 200973.5515.77
September 30, 200967.9914.59
June 30, 200975.4616.07
March 31, 200985.1118.12
December 31, 200884.6917.99
September 30, 200892.6320.14
September 30, 200785.8118.79
June 30, 200791.6119.50
March 31, 200782.1917.43
December 31, 200661.2512.91
September 30, 200646.429.73
June 30, 200657.6711.82
March 31, 200661.3610.97
December 31, 200528.55.82
September 30, 200531.865.20
June 30, 200533.065.46
March 31, 200539.286.43
December 31, 2004416.71
September 30, 200441.186.73
June 30, 200443.87.15
March 31, 200434.375.60

Insider ownership (%)

This is the historical insider ownership of Ultra Clean Holdings 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 (%)Insider Ownership (Shares in Mil)
June 30, 20178.993.01
May 31, 20179.073.03
April 30, 20178.762.93
March 31, 20179.113.00
February 28, 20178.062.65
January 31, 20178.122.67
December 31, 20168.22.67
November 30, 20168.22.67
October 31, 20168.22.67
September 30, 20168.22.67
August 31, 20168.212.68
July 31, 20167.842.55
June 30, 20167.842.55
May 31, 20167.272.37
April 30, 20167.292.36
March 31, 20167.312.37
February 29, 20167.342.37
January 31, 20166.592.13
December 31, 20157.312.37
November 30, 20156.652.15
October 31, 20156.792.15
September 30, 20156.772.14
August 31, 20156.772.14
July 31, 20156.772.14
June 30, 20156.772.14
May 31, 20156.772.14
April 30, 20156.62.09
March 31, 20156.312.01
February 28, 20156.661.97
January 31, 20156.471.91
December 31, 20145.991.77
November 30, 20145.771.70
October 31, 20145.781.71
September 30, 20145.781.71
August 31, 20145.781.71
July 31, 20145.781.71
June 30, 20145.81.71
May 31, 20145.81.71
March 31, 20147.271.66
February 28, 20147.51.71
January 31, 20147.441.70
December 31, 20137.761.77
November 30, 20137.841.79
October 31, 20137.91.80
September 30, 20138.121.85
August 31, 20138.121.85
July 31, 20138.121.85
June 30, 20138.171.87
May 31, 20138.171.87
April 30, 20137.331.67
March 31, 20137.351.68
January 31, 20137.681.75
November 30, 20127.681.75
October 31, 20127.511.71
September 30, 20127.491.71
August 31, 20127.491.71
July 31, 20127.491.71
June 30, 20127.541.72
May 31, 20127.541.72
April 30, 20127.421.69
March 31, 20126.961.59
February 29, 20126.961.59
January 31, 20126.751.54
December 31, 20116.751.54
November 30, 20116.751.54
October 31, 20116.471.48
September 30, 20116.471.48
August 31, 20116.471.48
July 31, 20116.471.48
June 30, 20116.541.49
May 31, 20116.541.49
April 30, 20116.381.45
March 31, 20116.421.45
February 28, 20116.61.45
January 31, 20115.031.11
December 31, 20105.191.14
November 30, 20105.191.14
October 31, 20105.21.14
September 30, 20105.21.14
August 31, 20105.21.14
July 31, 20105.281.14
June 30, 20105.281.14
May 31, 20107.451.61
April 30, 20107.491.61
March 31, 20107.521.62
February 28, 20107.571.62
January 31, 20106.671.43
December 31, 20096.671.43
November 30, 20096.671.43
October 31, 20096.671.43
September 30, 20096.671.43
August 31, 20096.671.43
July 31, 20096.661.43
June 30, 20096.251.34
May 31, 20093.780.81
April 30, 20093.690.79
March 31, 20093.640.77
February 28, 20093.640.77
January 31, 20093.840.82
December 31, 20083.860.82
November 30, 20083.860.82
October 31, 20083.860.82
September 30, 20083.770.82
August 31, 20083.770.82
July 31, 20083.770.82
June 30, 20083.790.82
May 31, 20086.21.34
April 30, 20087.361.59
March 31, 20087.231.56
February 29, 20087.361.59
January 31, 20087.591.63
December 31, 20077.671.65
November 30, 20078.661.86
October 31, 20079.251.99
September 30, 20079.382.01
August 31, 20079.572.05
July 31, 200711.212.40
June 30, 200711.312.40
May 31, 200712.572.67
April 30, 200713.652.89
March 31, 200713.552.87
February 28, 200714.163.00
January 31, 200713.762.87
December 31, 200613.312.78
November 30, 200613.312.78
October 31, 200613.312.78
September 30, 200613.372.78
June 30, 200615.212.78
May 31, 200611.862.17
April 30, 20062.070.37
March 31, 20062.070.37
February 28, 20062.070.37
January 31, 20062.710.45
December 31, 20053.220.53
November 30, 20053.230.53
October 31, 20053.230.53
September 30, 20053.230.53
August 31, 20053.230.53
July 31, 20053.230.53
June 30, 20053.240.53
May 31, 20053.240.53
April 30, 20053.240.53
March 31, 20053.240.53
February 28, 20053.240.53
January 31, 20053.240.53
December 31, 20043.250.53
November 30, 20043.250.53
October 31, 20043.250.53
September 30, 20043.250.53
August 31, 20043.210.52
July 31, 20043.210.52
June 30, 20043.210.52
May 31, 20043.210.52
April 30, 20043.210.52
March 31, 20043.220.52

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Ginetto Addiego,PhDN/A396,8161.18%2014-03-08
Kevin C. EichlerN/A390,0221.16%2016-03-27
Mr. James P. ScholhamerN/A315,9770.94%2017-02-26
Clarence L. GrangerDirector234,2080.7%2017-02-23
Ms. Sheri BrummCFO, SVP Finance and Secretary179,5520.54%2017-03-01
Mr. David SpeirsSVP, North America143,7160.43%2017-03-17
Mark BingmanSVP, Supply Chain112,2640.33%2017-02-27
Moreman FrankN/A107,9250.32%2006-11-29
Lavi A. LevSVP, Asia103,1980.31%2017-02-27
David SavageN/A85,0010.25%2010-07-29

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
Royce & Associates, LLC Premium1,612,9082016-12-314.990.1015,645
Renaissance Technologies Corp Premium763,5002016-12-312.360.017,406
State Street Corp   Premium Plus496,4522016-12-311.53N/A4,817
Dimensional Fund Advisors, Inc.   Premium Plus2,291,2772016-12-317.080.0122,226
D. E. Shaw & Co LP   Premium Plus484,9302016-12-311.500.014,704
Smith Graham & Co Inv Adv, L.P.**   Premium Plus1,248,6812016-12-313.861.3112,112
Thomson Horstmann & Bryant Inc   Premium Plus726,5842016-12-312.250.877,047
Vanguard Group Inc   Premium Plus1,216,2432016-12-313.76N/A11,797
BlackRock Fund Advisors   Premium Plus2,069,2302016-12-316.40N/A20,072
Pacific Ridge Capital Partners, LLC   Premium Plus555,5482016-12-311.721.945,389
Northern Trust Investments N A   Premium Plus696,9442016-12-312.15N/A6,760
J.P. Morgan Investment Management Inc   Premium Plus1,108,7712016-12-313.43N/A10,755
Paradigm Capital Management, Inc.   Premium Plus1,567,1002016-09-304.851.2211,612
Awm Investment Company Inc   Premium Plus1,276,5312016-12-313.952.4312,382
AIT Holding Co LLC1,116,2962016-12-313.45N/A10,828
DFA US Small Cap Value II Portfolio901,5862017-01-312.790.0811,297
Royce Opportunity Fund759,7382016-12-312.350.507,369
Vanguard Total Stock Mkt Idx716,8092017-02-282.15N/A9,928
iShares Russell 2000 (AU)658,7362017-03-212.130.039,868
Vanguard Extended Market Index Fund409,2092017-02-281.230.015,668

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