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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
Bank of America
26
Bank of America
North Carolina
– -$128K -26,224 Closed
SXL
27
Summit X LLC
Missouri
– -$122K -25,045 Closed
Charles Schwab
28
Charles Schwab
California
– -$113K -23,235 Closed
AQR Capital Management
29
AQR Capital Management
Connecticut
– -$108K -22,098 Closed
Group One Trading
30
Group One Trading
Illinois
– -$106K -21,693 Closed
RP
31
Regeneron Pharmaceuticals
New York
– -$102K -21,000 Closed
Deutsche Bank
32
Deutsche Bank
Germany
– -$97.9K -20,068 Closed
AllianceBernstein
33
AllianceBernstein
Tennessee
– -$71.8K -14,723 Closed
Two Sigma Investments
34
Two Sigma Investments
New York
– -$67.1K -13,745 Closed
RhumbLine Advisers
35
RhumbLine Advisers
Massachusetts
– -$61.1K -12,522 Closed
Citigroup
36
Citigroup
New York
– -$36.6K -7,503 Closed
Wells Fargo
37
Wells Fargo
California
– -$31.7K -6,499 Closed
Mirae Asset Global ETFs Holdings
38
Mirae Asset Global ETFs Holdings
Hong Kong
– -$28.6K -5,862 Closed
Osaic Holdings
39
Osaic Holdings
Arizona
– -$26.7K -5,476 Closed
CF
40
Corebridge Financial
Texas
– -$23.3K -4,781 Closed
PMAM
41
Picton Mahoney Asset Management
Ontario, Canada
– -$16K -3,220 Closed
PFSRSONJ
42
Police & Firemen's Retirement System of New Jersey
New Jersey
– -$13.3K -2,731 Closed
TRCT
43
Tower Research Capital (TRC)
New York
– -$11.8K -2,421 Closed
Carson Wealth (CWM LLC)
44
Carson Wealth (CWM LLC)
Nebraska
– -$8K -1,722 Closed
New York State Common Retirement Fund
45
New York State Common Retirement Fund
New York
– -$8.17K -1,675 Closed
Royal Bank of Canada
46
Royal Bank of Canada
Ontario, Canada
– -$5K -1,145 Closed
FDCDDQ
47
Federation des caisses Desjardins du Quebec
Quebec, Canada
– -$4.88K -1,000 Closed
AIP
48
Ameritas Investment Partners
Nebraska
– -$4.66K -954 Closed
Legal & General Group
49
Legal & General Group
United Kingdom
– -$4.58K -939 Closed
California State Teachers Retirement System (CalSTRS)
50
California State Teachers Retirement System (CalSTRS)
California
– -$3.39K -694 Closed
1
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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.