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BLUE

bluebird bio

Delisted

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

241 hedge funds and large institutions have $5.87B invested in bluebird bio in 2019 Q3 according to their latest regulatory filings, with 24 funds opening new positions, 81 increasing their positions, 78 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more funds holding in top 10

Funds holding in top 10: 12 (+1)

4% more repeat investments, than reductions

Existing positions increased: 81 | Existing positions reduced: 78

0.21% more ownership

Funds ownership: 8.72%8.93% (+0.21%)

12% less funds holding

Funds holding: 273241 (-32)

21% less call options, than puts

Call options by funds: $81.7M | Put options by funds: $103M

26% less capital invested

Capital invested by funds: $7.92B → $5.87B (-$2.05B)

56% less first-time investments, than exits

New positions opened: 24 | Existing positions closed: 54

Holders
241
Holders Change
-32
Holders Change %
-11.72%
% of All Funds
5.28%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.04%
New
24
Increased
81
Reduced
78
Closed
54
Calls
$81.7M
Puts
$103M
Net Calls
-$21.7M
Net Calls Change
+$9.31M
Name Holding Trade Value Shares
Change
Change in
Stake
PCM
51
Peregrine Capital Management
Minnesota
$10.7M +$13.8M +9,017 New
California Public Employees Retirement System
52
California Public Employees Retirement System
California
$9.6M +$4.63M +3,034 +60%
Swiss National Bank
53
Swiss National Bank
Switzerland
$9.53M +$189K +124 +2%
AG
54
Artal Group
Luxembourg
$9.18M
California State Teachers Retirement System (CalSTRS)
55
California State Teachers Retirement System (CalSTRS)
California
$8.06M +$29K +19 +0.3%
State Board of Administration of Florida Retirement System
56
State Board of Administration of Florida Retirement System
Florida
$7.26M -$87K -57 -0.9%
UBS Group
57
UBS Group
Switzerland
$6.71M +$3.79M +2,484 +79%
Millennium Management
58
Millennium Management
New York
$6.52M -$1.47M -963 -15%
Citigroup
59
Citigroup
New York
$6.27M +$686K +449 +9%
JP Morgan Chase
60
JP Morgan Chase
New York
$6.14M +$1.03M +674 +15%
BNP Paribas Financial Markets
61
BNP Paribas Financial Markets
France
$5.87M +$5.2M +3,407 +223%
Rafferty Asset Management
62
Rafferty Asset Management
New York
$5.68M +$2.34M +1,530 +47%
Principal Financial Group
63
Principal Financial Group
Iowa
$5.2M -$249K -163 -4%
RPAM
64
Rhenman & Partners Asset Management
Sweden
$4.78M -$2.12M -1,390 -26%
GH
65
GAM Holding
Switzerland
$4.55M
AIMCA
66
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$4.53M +$2.99M +1,961 +106%
RhumbLine Advisers
67
RhumbLine Advisers
Massachusetts
$4.33M +$45.8K +30 +0.8%
RSCM
68
Rock Springs Capital Management
Maryland
$4.32M
FCM
69
Frontier Capital Management
Massachusetts
$4M -$7.53M -4,930 -59%
Morgan Stanley
70
Morgan Stanley
New York
$4M -$6.15M -4,029 -55%
State of New Jersey Common Pension Fund D
71
State of New Jersey Common Pension Fund D
New Jersey
$3.96M +$5.08M +3,327 New
AIM
72
ARK Investment Management
Florida
$3.69M -$8.03M -5,261 -63%
PPA
73
Parametric Portfolio Associates
Washington
$3.68M -$122K -80 -3%
BBA
74
Baker Bros. Advisors
New York
$3.67M
Allianz Asset Management
75
Allianz Asset Management
Germany
$3.47M -$2.91M -1,903 -40%

BLUE Hedge Fund Activity: Q3 2019 in Review

241 of the 4,561 institutional investors tracked by Wall St. Rank reported a position in bluebird bio (BLUE) for Q3 2019, worth a combined $5.87B — down 26% from $7.92B a quarter earlier.

Sellers outnumbered buyers: 54 funds closed out of BLUE and 24 opened new positions — a net loss of 30 holders — while 78 trimmed existing stakes and 81 added.

The largest buyer was Sands Capital Management, adding an estimated $126M. The largest seller was Baillie Gifford & Co, cutting an estimated $90.5M.

  • 241 institutional investors held bluebird bio (BLUE) as of Q3 2019, down from 273 in Q2 2019.
  • Funds reported $5.87B of bluebird bio stock for Q3 2019, down 26% quarter-over-quarter.
  • 24 funds opened new bluebird bio positions in Q3 2019 and 54 closed out, a net change of -30 holders.
  • The largest bluebird bio buyer in Q3 2019 was Sands Capital Management, an estimated $126M added.
  • The largest bluebird bio seller in Q3 2019 was Baillie Gifford & Co, an estimated $90.5M sold.

Based on aggregated 13F filings for Q3 2019.