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BLUE

bluebird bio

Delisted

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

232 hedge funds and large institutions have $1.71B invested in bluebird bio in 2021 Q2 according to their latest regulatory filings, with 44 funds opening new positions, 81 increasing their positions, 60 reducing their positions, and 41 closing their positions.

New
Increased
Maintained
Reduced
Closed

35% more repeat investments, than reductions

Existing positions increased: 81 | Existing positions reduced: 60

7% more capital invested

Capital invested by funds: $1.59B → $1.71B (+$118M)

1% more funds holding

Funds holding: 229232 (+3)

7% more first-time investments, than exits

New positions opened: 44 | Existing positions closed: 41

0.07% more ownership

Funds ownership: 6.03%6.11% (+0.07%)

0% more funds holding in top 10

Funds holding in top 10: 11 (0)

20% less call options, than puts

Call options by funds: $26.1M | Put options by funds: $32.6M

Holders
232
Holders Change
+3
Holders Change %
+1.31%
% of All Funds
4.04%
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.02%
New
44
Increased
81
Reduced
60
Closed
41
Calls
$26.1M
Puts
$32.6M
Net Calls
-$6.51M
Net Calls Change
+$13.5M
Name Holding Trade Value Shares
Change
Change in
Stake
Principal Financial Group
26
Principal Financial Group
Iowa
$13.7M +$4.73M +11,935 +56%
Millennium Management
27
Millennium Management
New York
$13.3M -$798K -2,015 -6%
Susquehanna International Group
28
Susquehanna International Group
Pennsylvania
$11.4M -$5.45M -13,766 -33%
Ameriprise
29
Ameriprise
Minnesota
$11M +$500K +1,262 +5%
Canada Pension Plan Investment Board
30
Canada Pension Plan Investment Board
Ontario, Canada
$10.3M +$7.96M +20,101 +418%
Bank of New York Mellon
31
Bank of New York Mellon
New York
$10.1M +$2.8M +7,064 +41%
Dimensional Fund Advisors
32
Dimensional Fund Advisors
Texas
$8.97M -$516K -1,302 -6%
BBA
33
Baker Bros. Advisors
New York
$7.26M
QOP
34
Quinn Opportunity Partners
Virginia
$6.88M -$704K -1,776 -10%
Wells Fargo
35
Wells Fargo
California
$6.28M -$1.31M -3,305 -18%
PAMU
36
Pictet Asset Management (UK)
United Kingdom
$5.99M +$3.39M +8,566 +145%
Bank of America
37
Bank of America
North Carolina
$5.86M -$2.64M -6,666 -32%
PPA
38
Parametric Portfolio Associates
Washington
$5.59M +$2.55M +6,441 +91%
Citigroup
39
Citigroup
New York
$5.53M +$105K +266 +2%
Mirae Asset Global Investments
40
Mirae Asset Global Investments
South Korea
$5.52M +$79.2K +200 +2%
BAM
41
Bullseye Asset Management
Colorado
$5.05M +$2.75M +6,948 +133%
Group One Trading
42
Group One Trading
Illinois
$4.97M -$958K -2,417 -17%
CSS
43
Cubist Systematic Strategies
Connecticut
$4.89M -$182K -460 -4%
MP
44
Mangrove Partners
Connecticut
$4.83M -$734K -1,853 -14%
Swiss National Bank
45
Swiss National Bank
Switzerland
$4.73M -$110K -278 -2%
Swedbank
46
Swedbank
Sweden
$4.32M
Russell Investments Group
47
Russell Investments Group
United Kingdom
$4.24M -$3.29M -8,301 -45%
GPCM
48
Granite Point Capital Management
Massachusetts
$4.16M -$3.36M -8,492 -46%
Tudor Investment Corp
49
Tudor Investment Corp
Connecticut
$3.8M -$1.99M -5,031 -35%
Jane Street
50
Jane Street
New York
$3.44M -$1.89M -4,764 -36%

BLUE Hedge Fund Activity: Q2 2021 in Review

232 of the 5,746 institutional investors tracked by Wall St. Rank reported a position in bluebird bio (BLUE) for Q2 2021, worth a combined $1.71B — up 7.4% from $1.59B a quarter earlier.

Buyers outnumbered sellers: 44 funds opened new BLUE positions and 41 closed out — a net gain of 3 holders — while 81 added to existing stakes and 60 trimmed.

The largest buyer was BlackRock, adding an estimated $58.8M. The largest seller was Royal Bank of Canada, cutting an estimated $97.2M.

  • 232 institutional investors held bluebird bio (BLUE) as of Q2 2021, up from 229 in Q1 2021.
  • Funds reported $1.71B of bluebird bio stock for Q2 2021, up 7.4% quarter-over-quarter.
  • 44 funds opened new bluebird bio positions in Q2 2021 and 41 closed out, a net change of +3 holders.
  • The largest bluebird bio buyer in Q2 2021 was BlackRock, an estimated $58.8M added.
  • The largest bluebird bio seller in Q2 2021 was Royal Bank of Canada, an estimated $97.2M sold.

Based on aggregated 13F filings for Q2 2021.