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Quidel Corp (QDEL) Ownership Data

Short Interest History (%)

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

Date Short Interest (%)Short Interest (Shares in Mil)
September 29, 201718.213.95
September 15, 201717.123.71
August 31, 201716.563.59
August 15, 201716.423.56
July 31, 2017183.90
July 14, 201714.813.21
June 30, 201714.813.21
June 15, 201715.133.28
May 31, 201716.023.47
May 15, 201715.473.35
April 28, 201714.943.24
April 13, 201714.93.23
March 31, 201715.313.32
March 15, 201715.823.29
February 28, 201715.93.31
February 15, 201716.483.43
January 31, 201716.813.50
January 13, 201718.243.79
December 30, 201619.654.08
December 15, 201618.943.94
November 30, 201619.213.99
November 15, 201620.434.25
October 31, 201619.754.11
October 14, 201620.154.19
September 30, 201620.134.19
September 15, 201619.634.08
August 31, 201619.414.04
August 15, 201619.354.02
July 29, 201620.614.28
July 15, 201621.634.50
June 30, 201621.954.56
June 15, 201622.734.72
May 31, 201623.264.83
May 13, 201623.264.83
April 29, 201623.014.78
April 15, 201623.164.81
March 31, 201623.134.81
February 29, 201620.865.03
February 12, 201620.634.98
January 29, 201619.74.75
January 15, 201619.014.59
December 31, 201518.844.55
December 15, 201519.334.66
November 30, 201519.614.73
November 13, 201520.544.96
October 30, 201522.465.42
October 15, 201523.75.72
September 30, 201523.215.60
September 15, 201525.556.16
August 31, 201525.366.12
August 14, 201525.36.10
July 31, 201527.026.52
July 15, 201526.986.51
June 30, 201527.466.62
June 15, 201527.936.74
May 29, 201527.296.58
May 15, 201527.46.61
April 30, 201527.356.60
April 15, 201527.326.59
March 31, 201526.446.38
March 13, 201526.66.42
February 27, 201522.186.32
February 13, 201522.166.32
January 30, 201522.196.33
January 15, 201523.416.67
December 31, 201422.296.35
December 15, 201421.416.10
November 28, 201415.824.51
November 14, 201416.394.67
October 31, 201416.764.78
October 15, 201417.565.00
September 30, 201417.214.91
September 15, 201416.774.78
August 29, 201416.164.61
August 15, 201416.034.57
July 31, 201415.54.42
July 15, 201416.814.79
June 30, 201418.295.21
June 13, 201418.95.39
May 30, 201418.765.35
May 15, 201418.425.25
April 30, 201418.985.41
April 15, 201419.85.64
March 31, 201420.195.76
March 14, 201419.95.67
February 28, 201422.35.45
February 14, 201421.565.27
January 31, 201421.215.18
January 15, 201420.635.04
December 31, 201320.384.98
December 13, 201318.844.60
November 29, 201320.835.09
November 15, 201320.955.12
October 31, 201320.835.09
October 15, 201320.735.07
September 30, 201320.144.92
September 13, 201320.124.92
August 30, 201319.524.77
August 15, 201318.234.45
July 31, 201317.84.35
July 15, 201318.214.45
June 28, 201318.034.40
June 14, 201318.084.42
May 31, 201316.984.15
May 15, 201316.964.14
April 30, 201317.34.23
April 15, 201316.163.95
March 28, 201316.333.99
March 15, 201317.74.14
February 28, 201317.924.20
February 15, 201319.164.49
January 31, 201319.464.56
January 15, 201319.484.56
December 31, 201222.175.19
December 14, 201223.065.40
November 30, 201223.135.42
November 15, 201222.615.30
October 31, 201221.675.07
October 15, 201221.294.98
September 28, 201221.595.06
September 14, 201222.265.21
August 31, 201222.425.25
August 15, 201222.465.26
July 31, 201222.765.33
July 13, 201222.565.28
June 29, 201222.765.33
June 15, 201222.175.19
May 31, 201221.65.06
May 15, 201220.924.90
April 30, 201220.784.87
April 13, 201220.544.81
March 30, 201219.824.64
February 29, 201219.044.60
February 15, 201219.14.62
January 31, 201219.574.73
January 13, 201220.524.96
December 30, 201121.315.15
December 15, 201121.85.27
November 30, 201121.615.22
November 15, 201120.875.04
October 31, 201121.895.29
October 14, 201122.245.37
September 30, 201122.575.45
September 15, 201122.665.47
August 31, 201122.125.34
August 15, 201122.395.41
July 29, 201122.885.53
July 15, 201122.615.46
June 30, 201122.545.45
June 15, 201122.235.37
May 31, 201122.385.41
May 13, 201122.175.36
April 29, 201121.345.16
April 15, 201120.965.07
March 31, 201119.94.81
March 15, 201121.055.09
February 28, 201123.815.15
February 15, 201123.615.10
January 31, 201123.515.08
January 14, 201123.034.98
December 31, 201022.134.78
December 15, 201022.174.79
November 30, 201023.185.01
November 15, 201022.854.94
October 29, 201022.914.95
October 15, 201023.45.06
September 30, 201025.095.42
September 15, 201027.435.93
August 31, 201028.826.23
August 13, 201028.596.18
July 30, 201027.465.94
July 15, 201025.995.62
June 30, 201025.885.60
June 15, 201025.185.44
May 28, 201026.245.67
May 14, 201027.015.84
April 30, 201027.045.85
April 15, 201025.65.53
March 31, 201024.445.28

Institutional Ownership History (%)

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

Date Institutional Ownership (%)Institutional Ownership (Shares in Mil)
September 30, 201793.7631.36
June 30, 201786.0928.77
March 31, 201788.1829.27
December 31, 201692.2430.35
September 30, 201692.430.16
June 30, 201698.9432.05
March 31, 201696.431.16
December 31, 201593.2331.07
March 31, 201599.7134.38
September 30, 201495.0432.70
June 30, 201494.3932.35
March 31, 201496.4533.00
December 31, 201395.6532.59
September 30, 201389.8630.51
June 30, 201392.8531.44
March 31, 201387.429.49
December 31, 201292.9731.10
September 30, 201289.6729.86
June 30, 201291.8930.42
March 31, 201290.9230.08
December 31, 201193.4931.11
September 30, 201193.2330.97
June 30, 201193.8731.14
March 31, 201193.7131.08
December 31, 201091.5426.10
September 30, 201091.9326.21
June 30, 201092.5526.37
March 31, 201091.5526.45
December 31, 200996.8328.11
September 30, 200980.1324.24
June 30, 200981.624.50
March 31, 200992.5829.33
December 31, 200883.4427.16
September 30, 200888.8928.90
June 30, 200888.5328.63
March 31, 200889.2328.82
December 31, 200786.8927.93
September 30, 200783.7827.38
June 30, 200784.6727.59
March 31, 200785.9627.88
December 31, 200677.5626.07
September 30, 200683.1627.76
June 30, 200668.1723.24
March 31, 200667.623.06
December 31, 200562.0921.05
September 30, 200568.7622.64
June 30, 200562.7720.65
March 31, 200566.6221.32
December 31, 200471.3722.16
September 30, 200470.2722.24
June 30, 200477.1124.39
March 31, 200481.1625.63
December 31, 200366.1820.16
September 30, 200356.0516.21
June 30, 200353.4115.46
March 31, 200347.8313.79
December 31, 200249.5114.29
September 30, 200255.5816.10
June 30, 200254.0915.34
March 31, 200250.9814.74
December 31, 200143.812.53
September 30, 200139.7811.29
June 30, 200135.5910.04
March 31, 200134.189.55
December 31, 200034.289.21
September 30, 200035.59.27
June 30, 200030.337.96
March 31, 200028.687.70

Insider ownership (%)

This is the historical insider ownership of Quidel Corp. 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, 201713.444.46
May 31, 201713.394.45
April 30, 201713.494.44
March 31, 201713.464.44
February 28, 201713.524.41
January 31, 201713.494.40
December 31, 201613.564.43
November 30, 201613.624.44
October 31, 201613.724.44
September 30, 201613.724.44
August 31, 201613.714.44
July 31, 201613.764.45
June 30, 201613.764.45
May 31, 201613.764.45
April 30, 201613.774.44
March 31, 201613.774.44
February 29, 201613.364.44
January 31, 201613.24.39
December 31, 201513.774.44
November 30, 201513.24.39
October 31, 201513.224.40
September 30, 201513.084.38
August 31, 201513.084.38
July 31, 2015134.36
June 30, 2015134.36
May 31, 2015134.36
April 30, 201512.594.34
March 31, 201512.64.34
February 28, 201512.64.34
January 31, 201512.64.34
December 31, 201412.594.33
November 30, 201412.64.34
October 31, 201412.614.34
September 30, 201412.644.34
August 31, 201412.644.34
July 31, 201412.644.34
June 30, 201412.664.33
May 31, 201412.684.34
March 31, 201413.084.34
February 28, 201413.084.34
January 31, 201413.054.33
December 31, 201313.064.33
November 30, 201312.944.29
October 31, 201312.944.29
September 30, 201312.944.29
August 31, 201312.944.29
July 31, 201312.964.30
June 30, 201312.964.30
May 31, 201312.964.30
April 30, 201312.914.28
March 31, 201312.924.29
January 31, 201312.914.28
November 30, 201212.964.30
October 31, 201212.964.30
September 30, 201213.124.35
August 31, 201213.124.35
July 31, 201213.124.35
June 30, 201213.124.35
May 31, 201213.124.35
April 30, 201213.074.34
March 31, 201213.044.33
February 29, 201212.834.26
January 31, 201212.834.26
December 31, 201112.834.26
November 30, 201112.834.26
October 31, 201112.914.28
September 30, 201112.914.28
August 31, 201112.914.28
July 31, 201112.914.28
June 30, 201112.554.16
May 31, 201112.614.18
April 30, 201112.554.16
March 31, 201112.544.15
February 28, 201112.574.17
January 31, 201114.614.17
December 31, 201012.943.69
November 30, 201012.833.66
October 31, 201012.833.66
September 30, 201012.843.66
August 31, 201012.843.66
July 31, 201012.843.66
June 30, 201012.663.66
May 31, 201012.723.67
April 30, 201012.713.67
March 31, 201012.73.67
February 28, 201012.443.60
January 31, 201011.893.58
December 31, 200911.653.51
November 30, 200911.653.51
October 31, 200911.653.51
September 30, 200911.653.51
August 31, 200911.653.50
July 31, 200911.293.39
June 30, 200911.293.39
May 31, 200911.273.39
April 30, 200911.413.43
March 31, 200910.823.43
February 28, 200910.823.43
January 31, 200910.533.43
December 31, 200810.573.44
November 30, 200810.573.44
October 31, 200810.493.41
September 30, 200810.483.40
August 31, 200810.483.40
July 31, 200810.483.40
June 30, 200810.533.40
May 31, 200810.563.41
April 30, 200813.194.26
March 31, 200813.064.28
February 29, 200811.593.79
January 31, 200811.613.79
December 31, 200711.613.79
November 30, 200711.613.79
October 31, 200711.643.80
September 30, 200711.73.80
August 31, 200711.743.82
July 31, 200711.743.82
June 30, 200711.743.82
May 31, 200711.593.76
April 30, 200711.593.76
March 31, 200711.593.79
February 28, 200711.463.79
January 31, 200710.983.66
December 31, 200610.863.62
November 30, 200610.863.62
October 31, 200612.24.07
September 30, 200612.314.07
June 30, 200611.944.07
May 31, 200611.794.02
April 30, 200611.84.02
March 31, 200611.894.05
February 28, 200612.024.08
January 31, 200611.843.90
December 31, 200511.643.83
November 30, 200510.73.52
October 31, 200510.73.52
September 30, 200510.713.52
August 31, 200510.783.54
July 31, 200510.783.54
June 30, 200511.093.54
May 31, 200511.093.54
April 30, 200511.093.54
March 31, 20059.823.14
February 28, 20056.11.95
January 31, 20056.151.95
December 31, 20046.151.95
November 30, 20046.151.95
October 31, 20046.151.95
September 30, 20046.161.95
August 31, 20046.161.95
July 31, 20046.161.95
June 30, 20046.161.95
May 31, 20046.161.95
April 30, 20046.161.95
March 31, 20046.261.96
February 29, 20046.261.96

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Jack W SchulerN/A3,354,20710.03%2013-12-20
Douglas C. BryantPresident & CEO284,4930.85%2017-03-01
Caren L. MasonN/A199,9520.6%2008-10-29
Paul E. LandersN/A91,4550.27%2007-03-27
Mark E. PaizN/A80,6820.24%2007-06-19
Robert J. Bujarski,J.D.SVP, Bus Dev & Gen Counsel44,7590.13%2017-03-01
Dr. Thomas J. FoleyN/A44,7440.13%2009-05-19
Thomas D. BrownN/A39,4100.12%2017-02-15
Mark A. PulidoN/A35,9470.11%2015-08-17
Scot M. McLeodN/A34,4860.1%2013-01-18

Top Fund Holders

HolderSharesReport Date% of Total
Assets Managed
% of Shares
Outstanding
Market Value($1000)
BROWN CAPITAL MANAGEMENT LLC   Premium Plus5,753,3212017-06-301.91%17%156,145
ORACLE INVESTMENT MANAGEMENT INC   Premium Plus2,527,5542017-06-3013.79%8%68,598
PRICE T ROWE ASSOCIATES INC /MD/   Premium Plus2,509,2972017-06-300.01%8%68,102
VANGUARD GROUP INC   Premium Plus2,195,1012017-06-300.00%7%59,575
BlackRock Inc.   Premium Plus1,757,4522017-06-300.00%5%47,697
Macquarie Group Ltd   Premium Plus1,292,4922017-06-300.06%4%35,078
Arrowpoint Asset Management, LLC   Premium Plus977,8662017-06-300.33%3%26,539
NEW YORK STATE COMMON RETIREMENT FUND   Premium Plus892,7552017-06-300.03%3%24,229
DIMENSIONAL FUND ADVISORS LP   Premium Plus846,9572017-06-300.01%3%22,987
GABELLI FUNDS LLC   Premium Plus680,0002017-06-300.11%2%18,455
FRED ALGER MANAGEMENT INC   Premium Plus672,8802017-06-300.09%2%18,262
Mario Gabelli Premium626,1002017-06-300.11%2%16,992
Jim Simons Premium612,4872017-06-300.02%2%16,623
STATE STREET CORP   Premium Plus582,7852017-06-300.00%2%15,819
D. E. Shaw & Co., Inc.   Premium Plus487,9092017-06-300.02%1%13,242
Cannell Peter B & Co Inc   Premium Plus473,8002017-06-300.44%1%12,859
NORTHERN TRUST CORP   Premium Plus377,7072017-06-300.00%1%10,250
EAGLE BOSTON INVESTMENT MANAGEMENT INC   Premium Plus359,0342017-06-301.06%1%9,744
Aristotle Capital Boston, LLC   Premium Plus321,8712017-06-300.97%1%8,736
MILLENNIUM MANAGEMENT LLC   Premium Plus288,5902017-06-300.01%1%7,832

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