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BLUE

bluebird bio
BLUE

Delisted

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

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3 hedge funds and large institutions have $6.89K invested in bluebird bio in 2025 Q2 according to their latest regulatory filings, with 1 funds opening new positions, 1 increasing their positions, 1 reducing their positions, and 82 closing their positions.

New
Increased
Maintained
Reduced
Closed

0% more repeat investments, than reductions

Existing positions increased: 1 | Existing positions reduced: 1

35.93% less ownership

Funds ownership: 35.95% → 0.01% (-36%)

96% less funds holding

Funds holding: 85 → 3 (-82)

99% less first-time investments, than exits

New positions opened: 1 | Existing positions closed: 82

100% less capital invested

Capital invested by funds: $17.1M → $6.89K (-$17.1M)

100% less funds holding in top 10

Funds holding in top 10: 2 → 0 (-2)

Holders
3
Holders Change
-82
Holders Change %
-96.47%
% of All Funds
0.04%
Holding in Top 10
–
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-100%
% of All Funds
–
New
1
Increased
1
Reduced
1
Closed
82
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Russell Investments Group
Russell Investments Group
United Kingdom
+$5.72K
2
IA
IFP Advisors
Florida
+$31

Top Sellers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
-$3.41M
2
Vanguard Group
Vanguard Group
Pennsylvania
-$2.53M
3
TCM
Tang Capital Management
California
-$1.95M
4
Geode Capital Management
Geode Capital Management
Massachusetts
-$1.2M
5
State Street
State Street
Massachusetts
-$957K
Name Holding Trade Value Shares
Change 		Change in
Stake
Russell Investments Group
1
Russell Investments Group
United Kingdom
$6.89K +$5.72K +1,278 +1,183%
Barclays
2
Barclays
United Kingdom
$4 -$43.9K -9,812 -100%
IA
3
IFP Advisors
Florida
$3 +$31 +7 New
BlackRock
4
BlackRock
New York
– -$3.41M -697,973 Closed
Vanguard Group
5
Vanguard Group
Pennsylvania
– -$2.53M -518,238 Closed
TCM
6
Tang Capital Management
California
– -$1.95M -400,000 Closed
Geode Capital Management
7
Geode Capital Management
Massachusetts
– -$1.2M -246,117 Closed
State Street
8
State Street
Massachusetts
– -$957K -196,179 Closed
CIEC
9
Crédit Industriel et Commercial
France
– -$732K -150,000 Closed
GLF
10
Groupe la Francaise
France
– -$679K -135,000 Closed
EPM
11
Equitec Proprietary Markets
Illinois
– -$540K -110,714 Closed
Fidelity Investments
12
Fidelity Investments
Massachusetts
– -$428K -87,667 Closed
QOP
13
Quinn Opportunity Partners
Virginia
– -$397K -81,429 Closed
Northern Trust
14
Northern Trust
Illinois
– -$392K -80,401 Closed
LPC
15
Lion Point Capital
New York
– -$385K -78,912 Closed
Goldman Sachs
16
Goldman Sachs
New York
– -$317K -64,950 Closed
BMCM
17
Black Maple Capital Management
Wisconsin
– -$294K -60,197 Closed
Susquehanna International Group
18
Susquehanna International Group
Pennsylvania
– -$276K -56,588 Closed
Simplex Trading
19
Simplex Trading
Illinois
– -$259K -53,134 Closed
M
20
Murchinson
Ontario, Canada
– -$254K -52,000 Closed
UBS Group
21
UBS Group
Switzerland
– -$253K -51,804 Closed
Bank of New York Mellon
22
Bank of New York Mellon
New York
– -$160K -32,759 Closed
CL
23
CSS LLC
Illinois
– -$150K -30,772 Closed
Morgan Stanley
24
Morgan Stanley
New York
– -$140K -28,723 Closed
JP Morgan Chase
25
JP Morgan Chase
New York
– -$131K -26,870 Closed
1
2 3 4

BLUE Hedge Fund Activity: Q2 2025 in Review

3 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in bluebird bio (BLUE) for Q2 2025, worth a combined $6.89K — down 100% from $17.1M a quarter earlier.

Sellers outnumbered buyers: 82 funds closed out of BLUE and 1 opened new positions — a net loss of 81 holders — while 1 trimmed existing stakes and 1 added.

The largest buyer was Russell Investments Group, adding an estimated $5.72K. The largest seller was BlackRock, exiting entirely with an estimated $3.41M sold.

  • 3 institutional investors held bluebird bio (BLUE) as of Q2 2025, down from 85 in Q1 2025.
  • Funds reported $6.89K of bluebird bio stock for Q2 2025, down 100% quarter-over-quarter.
  • 1 fund opened new bluebird bio positions in Q2 2025 and 82 closed out, a net change of -81 holders.
  • The largest bluebird bio buyer in Q2 2025 was Russell Investments Group, an estimated $5.72K added.
  • The largest bluebird bio seller in Q2 2025 was BlackRock, an estimated $3.41M sold.

Based on aggregated 13F filings for Q2 2025.