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bluebird bio Inc (BLUE) Ownership Data

Short Interest History (%)

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

Date Short Interest (%)Short Interest (Shares in Mil)
May 31, 201731.747.81
May 15, 201731.787.82
April 28, 201731.597.77
April 13, 201732.037.88
March 31, 201736.697.99
March 15, 201735.497.73
February 28, 201736.958.04
February 15, 201736.287.90
January 31, 201736.537.95
January 13, 201734.157.43
December 30, 201634.037.41
December 15, 201636.57.94
November 30, 201641.098.94
November 15, 201639.978.70
October 31, 201642.239.19
October 14, 201639.88.66
September 30, 201640.628.84
September 15, 201640.938.91
August 31, 2016398.49
August 15, 201639.138.52
July 29, 201638.288.33
July 15, 201638.818.45
June 30, 201641.729.08
June 15, 201634.847.58
May 31, 201632.667.11
May 13, 201633.017.19
April 29, 201630.596.66
April 15, 201629.16.33
March 31, 201628.426.55
March 15, 201628.266.52
February 29, 201626.696.16
February 12, 201627.456.33
January 29, 201622.695.23
January 15, 201621.394.93
December 31, 201521.274.91
December 15, 201519.84.57
November 30, 201515.093.48
November 13, 201515.713.62
October 30, 201513.433.10
October 15, 201514.623.37
September 30, 201514.363.31
September 15, 201513.13.02
August 31, 201512.882.97
August 14, 201510.022.31
July 31, 20158.391.94
July 15, 20158.782.02
June 30, 20159.682.23
June 15, 201511.812.72
May 29, 201511.062.55
May 15, 201512.132.80
April 30, 201510.592.44
April 15, 201510.112.33
March 31, 201518.072.31
March 13, 201518.942.42
February 27, 2015182.30
February 13, 201517.662.25
January 30, 201516.242.07
January 15, 201515.772.01
December 31, 201414.781.89
December 15, 201417.382.22
November 28, 201416.932.16
November 14, 201416.452.10
October 31, 201417.462.23
October 15, 201419.152.44
September 30, 201417.822.28
September 15, 201413.191.68
August 29, 201412.241.56
August 15, 201414.81.89
July 31, 201414.31.83
July 15, 201412.761.63
June 30, 20146.860.88
June 13, 201410.011.28
May 30, 201410.311.32
May 15, 20149.331.19
April 30, 20149.851.26
April 15, 201410.361.30
March 31, 201411.71.47
March 14, 201412.611.58
February 28, 201411.951.50
February 14, 201412.031.51
January 31, 201411.791.48
January 15, 201415.521.95
December 31, 201318.162.28
December 13, 201318.662.34
November 29, 201316.452.06
November 15, 201314.771.85
October 31, 201315.121.90
October 15, 201313.771.73
September 30, 201310.761.35
September 13, 20138.851.11
August 30, 20139.311.17
August 15, 20136.460.81
July 31, 20136.290.79
July 15, 20134.270.54
June 28, 20131.30.16

Institutional Ownership History (%)

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

Date Institutional Ownership (%)Institutional Ownership (Shares in Mil)
March 31, 201799.4640.70
June 30, 201597.4935.08
March 31, 201596.8431.65
December 31, 201492.8830.03
September 30, 201482.2623.61
June 30, 201478.1619.60
March 31, 201475.7418.39
September 30, 201337.568.88
June 30, 201333.578.16

Insider ownership (%)

This is the historical insider ownership of bluebird bio 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)
May 31, 20171.50.61
April 30, 20171.490.61
March 31, 20171.460.60
February 28, 20171.580.59
January 31, 20171.450.54
December 31, 20161.490.55
November 30, 20161.450.54
October 31, 20161.450.54
September 30, 20161.450.54
August 31, 20161.450.54
July 31, 20161.460.54
June 30, 20161.410.52
May 31, 20161.410.52
April 30, 20161.410.52
March 31, 20161.410.52
February 29, 20161.420.52
January 31, 20161.250.46
December 31, 20151.410.52
November 30, 20151.240.46
October 31, 20151.060.39
September 30, 20151.070.39
August 31, 20151.070.39
July 31, 20151.070.39
June 30, 20151.060.38
May 31, 20150.950.34
April 30, 20151.050.34
March 31, 20151.060.34
February 28, 20151.060.34
January 31, 20151.190.34
December 31, 20141.180.34
November 30, 20140.970.28
October 31, 20140.990.28
September 30, 20141.20.34
August 31, 20141.180.34
July 31, 20141.420.35
June 30, 20141.420.35
May 31, 20141.760.43

Top Direct Holders

HolderPositionShares% of Shares
Outstanding
Report Date
Mr. Nick LeschlyPresident and CEO374,3680.91%2017-02-01
Dr. Robert Tepper,M.D.N/A89,0170.22%2015-02-03
Dr. Philip D. Gregory,D.Phil.Chief Scientific Officer37,779less than 0.1%2017-02-01
Mr. Jeffrey T. Walshand Strategy Officer27,305less than 0.1%2017-03-16
Dr. Steven GillisN/A18,633less than 0.1%2015-07-28
Dr. David Davidson, M.D.Chief Medical Officer17,177less than 0.1%2017-03-01
Ms. Susanna HighN/A15,000less than 0.1%2016-12-01
Dr. Douglas G. Cole, M.D.N/A12,051less than 0.1%2017-03-16
Mr. Eric M. SullivanPrincipal Accounting Officer6,466less than 0.1%2017-03-16
Dr. John M. Maraganore,PhDDirector4,843less than 0.1%2017-03-03

Top Fund Holders

HolderSharesReport Date% of Shares
Outstanding
% of Total
Assets Managed
Market Value($1000)
OppenheimerFunds Inc   Premium Plus971,4712016-12-312.390.0859,940
Franklin Advisers Inc   Premium Plus925,3002016-12-312.270.0557,091
T. Rowe Price Associates, Inc.   Premium Plus3,288,1612016-12-318.080.04202,880
State Street Corp   Premium Plus1,552,8042016-12-313.820.0195,814
Baillie Gifford & Co Limited.   Premium Plus5,164,4672016-12-3112.690.52318,647
Capital Research Global Investors   Premium Plus4,713,0422016-12-3111.580.09290,795
Victory Capital Management Inc.   Premium Plus983,6092016-12-312.420.1560,688
Vanguard Group Inc   Premium Plus3,073,9532016-12-317.550.01189,663
BlackRock Fund Advisors   Premium Plus1,813,1912016-12-314.460.02111,874
Fidelity Management and Research Company   Premium Plus6,064,7712016-12-3114.900.05374,196
Wellington Management Company LLP   Premium Plus3,049,5192016-12-317.490.05188,156
Fidelity® Growth Company Fund2,447,7812017-01-316.020.52182,360
VA CollegeAmerica Growth Fund of America1,854,8032016-12-314.560.08114,441
Growth Fund of America Inc1,854,8032016-12-304.97N/A111,937
VA CollegeAmerica New Economy1,621,1222016-12-313.980.73100,023
VA CollegeAmerica Small Cap World1,594,3522016-12-313.920.3798,372
T. Rowe Price Health Sciences Fund1,056,1792016-12-312.600.6565,166
Scottish Mortgage Inv Tr942,6402016-12-312.321.0158,161
Vanguard Small Cap Index933,1082017-02-282.280.1181,787
Vanguard Total Stock Mkt Idx887,5152017-02-282.170.0177,791

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