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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)
October 31, 201717.334.26
October 13, 201718.454.54
September 29, 201717.714.36
September 15, 201731.547.76
August 31, 201730.967.62
August 15, 201730.57.50
July 31, 201729.37.21
July 14, 201728.837.10
June 30, 201729.617.29
June 15, 201732.467.99
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)
June 30, 201597.3835.04
March 31, 201596.7931.64
December 31, 201492.8630.03
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)
October 31, 20171.140.52
September 30, 20171.140.52
August 31, 20171.140.52
July 31, 20171.310.60
June 30, 20171.490.61
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 CEO374,3680.82%2017-02-01
Dr. Robert Tepper,M.D.N/A89,0170.19%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 Total
Assets Managed
% of Shares
Outstanding
Market Value($1000)
FMR LLC   Premium Plus6,838,4072017-09-300.11%N/A939,255
Capital Research Global Investors   Premium Plus5,584,6172017-09-300.23%N/A767,047
WELLINGTON MANAGEMENT GROUP LLP   Premium Plus4,091,1172017-09-300.13%N/A561,915
VANGUARD GROUP INC   Premium Plus3,683,8812017-09-300.02%N/A505,982
BlackRock Inc.   Premium Plus3,599,6742017-09-300.03%N/A494,415
PRICE T ROWE ASSOCIATES INC /MD/   Premium Plus2,736,6262017-09-300.06%N/A375,876
STATE STREET CORP   Premium Plus1,490,1282017-09-300.02%N/A204,669
Capital World Investors   Premium Plus1,133,7552017-09-300.04%N/A155,721
OPPENHEIMER FUNDS INC   Premium Plus968,1612017-09-300.16%N/A132,977
VICTORY CAPITAL MANAGEMENT INC   Premium Plus758,7912017-09-300.24%N/A104,219
JENNISON ASSOCIATES LLC   Premium Plus664,8562017-09-300.09%N/A91,318
NORTHERN TRUST CORP   Premium Plus559,6432017-09-300.02%N/A76,868
Balyasny Asset Management LLC   Premium Plus503,1222017-09-300.27%N/A69,104
FRANKLIN RESOURCES INC   Premium Plus486,0002017-09-300.03%N/A66,752
ORBIMED ADVISORS LLC   Premium Plus481,9462017-09-300.64%N/A66,195
GEODE CAPITAL MANAGEMENT, LLC   Premium Plus417,4092017-09-300.02%N/A57,331
EVENTIDE ASSET MANAGEMENT, LLC   Premium Plus412,0002017-09-303.21%N/A56,588
Steven Romick Premium378,5282017-09-300.11%N/A51,991
CI Can Am Small Cap Premium378,5282017-09-300.11%N/A51,991
IVA International Fund Premium378,5282017-09-300.11%N/A51,991
Bestinfond Premium378,5282017-09-300.11%N/A51,991
azValor Iberia FI Premium378,5282017-09-300.11%N/A51,991
Yacktman Fund Premium378,5282017-09-300.11%N/A51,991
Tweedy Browne Global Value Premium378,5282017-09-300.11%N/A51,991
Hennessy Japan Fund Premium378,5282017-09-300.11%N/A51,991
Matthews China Fund Premium378,5282017-09-300.11%N/A51,991
David Carlson Premium378,5282017-09-300.11%N/A51,991
FPA Capital Fund Premium378,5282017-09-300.11%N/A51,991
Mawer New Canada Fund Premium378,5282017-09-300.11%N/A51,991
Bernard Horn Premium378,5282017-09-300.11%N/A51,991
MS Global Franchise Fund Premium378,5282017-09-300.11%N/A51,991
Fairholme Focused Income Fund Premium378,5282017-09-300.11%N/A51,991
Chou RRSP Fund Premium378,5282017-09-300.11%N/A51,991
Matthews Japan Fund Premium378,5282017-09-300.11%N/A51,991
Meryl Witmer Premium378,5282017-09-300.11%N/A51,991
David Nadel Premium378,5282017-09-300.11%N/A51,991
Leith Wheeler Canadian Equity Premium378,5282017-09-300.11%N/A51,991
Invesco European Growth Fund Premium378,5282017-09-300.11%N/A51,991
Causeway International Value Premium378,5282017-09-300.11%N/A51,991
Jerome Dodson Premium378,5282017-09-300.11%N/A51,991
David Williams Premium378,5282017-09-300.11%N/A51,991
Signature Select Canadian Fund Premium378,5282017-09-300.11%N/A51,991
Wintergreen Fund Premium378,5282017-09-300.11%N/A51,991
Charles de Vaulx Premium378,5282017-09-300.11%N/A51,991
Spiros Segalas Premium378,5282017-09-300.11%N/A51,991
Yacktman Focused Fund Premium378,5282017-09-300.11%N/A51,991
David Herro Premium378,5282017-09-300.11%N/A51,991
Hennessy Japan Small Cap Fund Premium378,5282017-09-300.11%N/A51,991
Value Partners Premium378,5282017-09-300.11%N/A51,991
Eaton Vance Worldwide Health Sciences Fund Premium378,5282017-09-300.11%N/A51,991
Vanguard Health Care Fund Premium378,5282017-09-300.11%N/A51,991
Mawer Canadian Equity Fund Premium378,5282017-09-300.11%N/A51,991
Oakmark Intl Small Cap Premium378,5282017-09-300.11%N/A51,991
Wasatch International Growth Premium378,5282017-09-300.11%N/A51,991
Francisco García Paramés Premium378,5282017-09-300.11%N/A51,991
Arrowpoint Asset Management, LLC   Premium Plus361,8252017-09-300.56%N/A49,697
Ameriprise Financial Inc   Premium Plus340,2592017-09-300.02%N/A46,735

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