We are live on ! Find out more
BLUE

bluebird bio

Delisted

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

278 hedge funds and large institutions have $3.94B invested in bluebird bio in 2020 Q2 according to their latest regulatory filings, with 71 funds opening new positions, 119 increasing their positions, 52 reducing their positions, and 39 closing their positions.

New
Increased
Maintained
Reduced
Closed

129% more repeat investments, than reductions

Existing positions increased: 119 | Existing positions reduced: 52

82% more first-time investments, than exits

New positions opened: 71 | Existing positions closed: 39

42% more capital invested

Capital invested by funds: $2.78B → $3.94B (+$1.16B)

33% more funds holding in top 10

Funds holding in top 10: 34 (+1)

13% more funds holding

Funds holding: 247278 (+31)

0.67% less ownership

Funds ownership: 8.36%7.69% (-0.67%)

14% less call options, than puts

Call options by funds: $39.6M | Put options by funds: $46.1M

Holders
278
Holders Change
+31
Holders Change %
+12.55%
% of All Funds
5.7%
Holding in Top 10
4
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+33.33%
% of All Funds
0.08%
New
71
Increased
119
Reduced
52
Closed
39
Calls
$39.6M
Puts
$46.1M
Net Calls
-$6.51M
Net Calls Change
+$4.37M
Name Holding Trade Value Shares
Change
Change in
Stake
Russell Investments Group
51
Russell Investments Group
United Kingdom
$8.98M +$4.82M +6,398 +129%
Swiss National Bank
52
Swiss National Bank
Switzerland
$8.82M +$2.17M +2,872 +35%
Ameriprise
53
Ameriprise
Minnesota
$8.6M -$13.4M -17,731 -62%
SM
54
Senvest Management
New York
$8.16M +$7.78M +10,322 New
Axa
55
Axa
France
$8.16M +$7.78M +10,318 New
California Public Employees Retirement System
56
California Public Employees Retirement System
California
$8.03M +$1.09M +1,444 +17%
Two Sigma Advisers
57
Two Sigma Advisers
New York
$7.99M +$1.09M +1,451 +17%
MIM
58
Monashee Investment Management
Massachusetts
$7.93M +$7.57M +10,036 New
MP
59
Mangrove Partners
Connecticut
$7.91M +$7.55M +10,007 New
Principal Financial Group
60
Principal Financial Group
Iowa
$6.88M +$3.4M +4,515 +108%
Citadel Advisors
61
Citadel Advisors
Florida
$6.73M -$55.6M -73,794 -90%
California State Teachers Retirement System (CalSTRS)
62
California State Teachers Retirement System (CalSTRS)
California
$6.72M +$1.07M +1,418 +20%
AIMCA
63
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$6.64M +$1.01M +1,339 +19%
RPAM
64
Rhenman & Partners Asset Management
Sweden
$6.58M +$2.38M +3,150 +61%
GIM
65
Granahan Investment Management
Massachusetts
$6.47M +$6.17M +8,181 New
Barclays
66
Barclays
United Kingdom
$6.42M +$2.2M +2,924 +56%
IC
67
Ikarian Capital
Texas
$6.4M +$5.73M +7,594 +1,513%
Citigroup
68
Citigroup
New York
$5.57M +$85.2K +113 +2%
Morgan Stanley
69
Morgan Stanley
New York
$5.47M -$12.9M -17,074 -71%
PCM
70
Peregrine Capital Management
Minnesota
$5.28M -$2.69M -3,571 -35%
Franklin Resources
71
Franklin Resources
California
$5.25M +$30.9K +41 +0.7%
State Board of Administration of Florida Retirement System
72
State Board of Administration of Florida Retirement System
Florida
$5.17M +$351K +465 +8%
TCM
73
Tekla Capital Management
Massachusetts
$5.14M
PP
74
PDT Partners
New York
$5.06M -$1.22M -1,621 -20%
Man Group
75
Man Group
United Kingdom
$5.04M +$4.81M +6,376 New

BLUE Hedge Fund Activity: Q2 2020 in Review

278 of the 4,878 institutional investors tracked by Wall St. Rank reported a position in bluebird bio (BLUE) for Q2 2020, worth a combined $3.94B — up 42% from $2.78B a quarter earlier.

Buyers outnumbered sellers: 71 funds opened new BLUE positions and 39 closed out — a net gain of 32 holders — while 119 added to existing stakes and 52 trimmed.

The largest buyer was Vanguard Group, adding an estimated $129M. The largest seller was Fidelity Investments, cutting an estimated $166M.

  • 278 institutional investors held bluebird bio (BLUE) as of Q2 2020, up from 247 in Q1 2020.
  • Funds reported $3.94B of bluebird bio stock for Q2 2020, up 42% quarter-over-quarter.
  • 71 funds opened new bluebird bio positions in Q2 2020 and 39 closed out, a net change of +32 holders.
  • The largest bluebird bio buyer in Q2 2020 was Vanguard Group, an estimated $129M added.
  • The largest bluebird bio seller in Q2 2020 was Fidelity Investments, an estimated $166M sold.

Based on aggregated 13F filings for Q2 2020.