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BLUE

bluebird bio
BLUE

Delisted

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

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85 hedge funds and large institutions have $17.1M invested in bluebird bio in 2025 Q1 according to their latest regulatory filings, with 22 funds opening new positions, 15 increasing their positions, 24 reducing their positions, and 19 closing their positions.

New
Increased
Maintained
Reduced
Closed

239% more call options, than puts

Call options by funds: $23.8M | Put options by funds: $7M

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

16% more first-time investments, than exits

New positions opened: 22 | Existing positions closed: 19

6.58% more ownership

Funds ownership: 29.37% → 35.95% (+6.6%)

2% more funds holding

Funds holding: 83 → 85 (+2)

28% less capital invested

Capital invested by funds: $23.8M → $17.1M (-$6.7M)

38% less repeat investments, than reductions

Existing positions increased: 15 | Existing positions reduced: 24

Holders
85
Holders Change
+2
Holders Change %
+2.41%
% of All Funds
1.14%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
22
Increased
15
Reduced
24
Closed
19
Calls
$23.8M
Puts
$7M
Net Calls
+$16.8M
Net Calls Change
-$19M

Top Buyers

Rank Fund Capital Flow
1
TCM
Tang Capital Management
California
+$2.41M
2
CIEC
Crédit Industriel et Commercial
France
+$902K
3
GLF
Groupe la Francaise
France
+$812K
4
EPM
Equitec Proprietary Markets
Illinois
+$666K
5
QOP
Quinn Opportunity Partners
Virginia
+$490K

Top Sellers

Rank Fund Capital Flow
1
APM
Avidity Partners Management
Texas
-$680K
2
PHS
PFM Health Sciences
California
-$632K
3
National Bank of Canada
National Bank of Canada
Quebec, Canada
-$491K
4
MCM
Masters Capital Management
Georgia
-$407K
5
UBS Group
UBS Group
Switzerland
-$328K
Name Holding Trade Value Shares
Change 		Change in
Stake
Nisa Investment Advisors
51
Nisa Investment Advisors
Missouri
$2.04K +$1.56K +260 +164%
AB
52
Amalgamated Bank
New York
$2K -$6 -1 -0.3%
RAM
53
Riggs Asset Management
Pennsylvania
$1.71K – – –
HPC
54
HM Payson & Co
Maine
$976 – – –
SCM
55
Sterling Capital Management
North Carolina
$854 -$902 -150 -46%
SS
56
SBI Securities
Japan
$834 -$204 -34 -17%
NA
57
NewEdge Advisors
Louisiana
$732 – – –
Optiver Holding
58
Optiver Holding
Netherlands
$571 +$704 +117 New
VWM
59
Vermillion Wealth Management
Minnesota
$556 – – –
RBI
60
Raiffeisen Bank International
Austria
$547 – – –
Russell Investments Group
61
Russell Investments Group
United Kingdom
$527 +$649 +108 New
CA
62
CoreCap Advisors
Michigan
$439 +$541 +90 New
PFBT
63
Parkside Financial Bank & Trust
Missouri
$415 +$511 +85 New
RIL
64
Rothschild Investment LLC
Illinois
$293 +$90 +15 +33%
ACM
65
Accent Capital Management
Ohio
$244 – – –
AWM
66
Activest Wealth Management
Florida
$244 – – –
SSB
67
Sandy Spring Bank
Maryland
$162 – – –
GI
68
GAMMA Investing
California
$146 +$66 +11 +58%
SPIA
69
Steward Partners Investment Advisory
New York
$98 – – –
Jones Financial Companies
70
Jones Financial Companies
Missouri
$73 +$48 +8 +80%
HWM
71
HighMark Wealth Management
Minnesota
$54 – – –
TCOV
72
Trust Company of Vermont
Vermont
$54 – – –
Northwestern Mutual Wealth Management
73
Northwestern Mutual Wealth Management
Wisconsin
$49 +$12 +2 +25%
TFA
74
Toth Financial Advisory
Virginia
$49 +$60 +10 New
TC
75
Truvestments Capital
Florida
$29 – – –
1 2
3
4 5

BLUE Hedge Fund Activity: Q1 2025 in Review

85 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in bluebird bio (BLUE) for Q1 2025, worth a combined $17.1M — down 28% from $23.8M a quarter earlier.

Buyers outnumbered sellers: 22 funds opened new BLUE positions and 19 closed out — a net gain of 3 holders — while 15 added to existing stakes and 24 trimmed.

The largest buyer was Tang Capital Management, opening a new position worth an estimated $2.41M. The largest seller was Avidity Partners Management, exiting entirely with an estimated $680K sold.

  • 85 institutional investors held bluebird bio (BLUE) as of Q1 2025, up from 83 in Q4 2024.
  • Funds reported $17.1M of bluebird bio stock for Q1 2025, down 28% quarter-over-quarter.
  • 22 funds opened new bluebird bio positions in Q1 2025 and 19 closed out, a net change of +3 holders.
  • The largest bluebird bio buyer in Q1 2025 was Tang Capital Management, an estimated $2.41M added.
  • The largest bluebird bio seller in Q1 2025 was Avidity Partners Management, an estimated $680K sold.

Based on aggregated 13F filings for Q1 2025.