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BLUE

bluebird bio
BLUE

Delisted

BLUE was delisted on the 30th of May, 2025.

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81 hedge funds and large institutions have $378M invested in bluebird bio in 2013 Q4 according to their latest regulatory filings, with 26 funds opening new positions, 32 increasing their positions, 16 reducing their positions, and 12 closing their positions.

New
Increased
Maintained
Reduced
Closed

117% more first-time investments, than exits

New positions opened: 26 | Existing positions closed: 12

100% more repeat investments, than reductions

Existing positions increased: 32 | Existing positions reduced: 16

60% more capital invested

Capital invested by funds: $236M → $378M (+$142M)

21% more funds holding

Funds holding: 67 → 81 (+14)

Holders
81
Holders Change
+14
Holders Change %
+20.9%
% of All Funds
2.35%
Holding in Top 10
2
Holding in Top 10 Change
+2
Holding in Top 10 Change %
% of All Funds
0.06%
New
26
Increased
32
Reduced
16
Closed
12
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
+$43.1M
2
Capital Research Global Investors
Capital Research Global Investors
California
+$34.1M
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$10.4M
4
BFA
BlackRock Fund Advisors
California
+$5.8M
5
FAM
Fred Alger Management
New York
+$5.12M

Top Sellers

Rank Fund Capital Flow
1
O
OrbiMed
New York
-$6M
2
Ameriprise
Ameriprise
Minnesota
-$2.63M
3
PC
PointState Capital
New York
-$2.16M
4
QF
QVT Financial
New York
-$2.02M
5
PAM
Panagora Asset Management
Massachusetts
-$876K
Name Holding Trade Value Shares
Change 		Change in
Stake
SCM
26
Sigma Capital Management
Connecticut
$2.06M +$2.12M +7,599 New
Northern Trust
27
Northern Trust
Illinois
$2.02M +$1.29M +4,617 +165%
SFM
28
Sphera Funds Management
Israel
$1.94M +$1.99M +7,136 New
HLA
29
Hamilton Lane Advisors
Pennsylvania
$1.86M +$1.91M +6,842 New
State Street
30
State Street
Massachusetts
$1.58M +$402K +1,438 +33%
BIT
31
BlackRock Institutional Trust
California
$1.44M +$108K +386 +8%
Millennium Management
32
Millennium Management
New York
$1.33M -$37.4K -134 -3%
HP
33
Harbourvest Partners
Massachusetts
$1.24M +$1.28M +4,575 New
TRSOTSOK
34
Teachers Retirement System of the State of Kentucky
Kentucky
$1.15M – – –
California Public Employees Retirement System
35
California Public Employees Retirement System
California
$1.09M +$1.1M +3,939 New
Principal Financial Group
36
Principal Financial Group
Iowa
$1.07M +$19.3K +69 +2%
Geode Capital Management
37
Geode Capital Management
Massachusetts
$945K +$186K +665 +24%
BlackRock
38
BlackRock
New York
$779K +$798K +2,857 +25,973%
BG
39
BlackRock Group
United Kingdom
$768K -$12.3K -44 -2%
Goldman Sachs
40
Goldman Sachs
New York
$758K +$150K +538 +24%
GACM
41
Green Arrow Capital Management
New York
$629K +$647K +2,316 New
Bank of New York Mellon
42
Bank of New York Mellon
New York
$586K +$226K +810 +60%
LI
43
LMCG Investments
Massachusetts
$585K +$601K +2,151 New
EAM
44
Eventide Asset Management
Massachusetts
$539K +$554K +1,984 New
Bank of America
45
Bank of America
North Carolina
$501K -$237K -849 -31%
TCIM
46
TIAA CREF Investment Management
New York
$499K +$157K +563 +44%
Alyeska Investment Group
47
Alyeska Investment Group
Illinois
$486K -$364K -1,301 -42%
PA
48
Perceptive Advisors
New York
$420K +$431K +1,544 New
BIM
49
BlackRock Investment Management
Delaware
$395K +$1.12K +4 +0.3%
JRP
50
Jasper Ridge Partners
California
$394K +$405K +1,451 New
1
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BLUE Hedge Fund Activity: Q4 2013 in Review

81 of the 3,446 institutional investors tracked by Wall St. Rank reported a position in bluebird bio (BLUE) for Q4 2013, worth a combined $378M — up 60% from $236M a quarter earlier.

Buyers outnumbered sellers: 26 funds opened new BLUE positions and 12 closed out — a net gain of 14 holders — while 32 added to existing stakes and 16 trimmed.

The largest buyer was Fidelity Investments, adding an estimated $43.1M. The largest seller was OrbiMed, exiting entirely with an estimated $6M sold.

  • 81 institutional investors held bluebird bio (BLUE) as of Q4 2013, up from 67 in Q3 2013.
  • Funds reported $378M of bluebird bio stock for Q4 2013, up 60% quarter-over-quarter.
  • 26 funds opened new bluebird bio positions in Q4 2013 and 12 closed out, a net change of +14 holders.
  • The largest bluebird bio buyer in Q4 2013 was Fidelity Investments, an estimated $43.1M added.
  • The largest bluebird bio seller in Q4 2013 was OrbiMed, an estimated $6M sold.

Based on aggregated 13F filings for Q4 2013.