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BLUE

bluebird bio
BLUE

Delisted

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

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67 hedge funds and large institutions have $236M invested in bluebird bio in 2013 Q3 according to their latest regulatory filings, with 62 funds opening new positions, 2 increasing their positions, 2 reducing their positions, and 1 closing their positions.

New
Increased
Maintained
Reduced
Closed

6,100% more first-time investments, than exits

New positions opened: 62 | Existing positions closed: 1

1,451% more capital invested

Capital invested by funds: $15.2M → $236M (+$221M)

1,017% more funds holding

Funds holding: 6 → 67 (+61)

0% more repeat investments, than reductions

Existing positions increased: 2 | Existing positions reduced: 2

Holders
67
Holders Change
+61
Holders Change %
+1,016.67%
% of All Funds
2.17%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
62
Increased
2
Reduced
2
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
+$44.9M
2
Capital Research Global Investors
Capital Research Global Investors
California
+$29.6M
3
WRF
Waddell & Reed Financial
Kansas
+$25.8M
4
Jennison Associates
Jennison Associates
New York
+$17.4M
5
RCM
RA Capital Management
Massachusetts
+$13.4M

Top Sellers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
-$1.25M
2
EEG
E.E. Geduld
-$452K
3
Ameriprise
Ameriprise
Minnesota
-$2.97K
Name Holding Trade Value Shares
Change 		Change in
Stake
Principal Financial Group
26
Principal Financial Group
Iowa
$1.35M +$1.43M +3,860 New
MCM
27
Mazama Capital Management
Oregon
$1.16M +$378K +1,017 +44%
Alyeska Investment Group
28
Alyeska Investment Group
Illinois
$1.08M +$287K +772 +33%
BG
29
BlackRock Group
United Kingdom
$1M +$1.07M +2,870 New
Geode Capital Management
30
Geode Capital Management
Massachusetts
$983K +$1.05M +2,814 New
Northern Trust
31
Northern Trust
Illinois
$979K +$1.04M +2,803 New
Deutsche Bank
32
Deutsche Bank
Germany
$942K +$1M +2,699 New
Bank of America
33
Bank of America
North Carolina
$941K +$1M +2,696 New
PAM
34
Panagora Asset Management
Massachusetts
$876K +$932K +2,509 New
Goldman Sachs
35
Goldman Sachs
New York
$787K +$837K +2,253 New
PMAM
36
Picton Mahoney Asset Management
Ontario, Canada
$787K +$837K +2,254 New
BIM
37
BlackRock Investment Management
Delaware
$507K +$539K +1,451 New
HHC
38
Hutchin Hill Capital
New York
$507K +$539K +1,451 New
Bank of New York Mellon
39
Bank of New York Mellon
New York
$470K +$500K +1,347 New
TCIM
40
TIAA CREF Investment Management
New York
$445K +$473K +1,274 New
Royal Bank of Canada
41
Royal Bank of Canada
Ontario, Canada
$438K +$467K +1,257 New
SIM
42
Spark Investment Management
New York
$406K +$430K +1,158 New
MWNA
43
Marshall Wace North America
New York
$404K +$430K +1,158 New
Charles Schwab
44
Charles Schwab
California
$387K +$409K +1,100 New
WC
45
Woodstock Corp
Massachusetts
$359K +$381K +1,027 New
Morgan Stanley
46
Morgan Stanley
New York
$347K +$370K +995 New
JP Morgan Chase
47
JP Morgan Chase
New York
$341K +$362K +975 New
DCM
48
Driehaus Capital Management
Illinois
$321K +$341K +919 New
EEG
49
E.E. Geduld
$270K -$452K -1,216 -61%
California State Teachers Retirement System (CalSTRS)
50
California State Teachers Retirement System (CalSTRS)
California
$264K +$281K +757 New
1
2
3

BLUE Hedge Fund Activity: Q3 2013 in Review

67 of the 3,084 institutional investors tracked by Wall St. Rank reported a position in bluebird bio (BLUE) for Q3 2013, worth a combined $236M — up 1,451% from $15.2M a quarter earlier.

Buyers outnumbered sellers: 62 funds opened new BLUE positions and 1 closed out — a net gain of 61 holders — while 2 added to existing stakes and 2 trimmed.

The largest buyer was Fidelity Investments, opening a new position worth an estimated $44.9M. The largest seller was Citadel Advisors, exiting entirely with an estimated $1.25M sold.

  • 67 institutional investors held bluebird bio (BLUE) as of Q3 2013, up from 6 in Q2 2013.
  • Funds reported $236M of bluebird bio stock for Q3 2013, up 1,451% quarter-over-quarter.
  • 62 funds opened new bluebird bio positions in Q3 2013 and 1 closed out, a net change of +61 holders.
  • The largest bluebird bio buyer in Q3 2013 was Fidelity Investments, an estimated $44.9M added.
  • The largest bluebird bio seller in Q3 2013 was Citadel Advisors, an estimated $1.25M sold.

Based on aggregated 13F filings for Q3 2013.