BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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174 hedge funds and large institutions have $308M invested in bluebird bio in 2023 Q2 according to their latest regulatory filings, with 27 funds opening new positions, 66 increasing their positions, 41 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
174
Holders Change
-2
Holders Change %
-1.14%
% of All Funds
2.74%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
27
Increased
66
Reduced
41
Closed
29
Calls
$3.89M
Puts
$5.74M
Net Calls
-$1.85M
Net Calls Change
-$1.36M

Top Buyers

1
GIM
1
Granahan Investment Management
Massachusetts
$16M
2
PHS
2
PFM Health Sciences
California
$24M
3
PAMS
3
Pictet Asset Management (Switzerland)
Switzerland
$15.4M
4
Walleye Capital
4
Walleye Capital
New York
$2.75M
5
Jacobs Levy Equity Management
5
Jacobs Levy Equity Management
New Jersey
$6.88M

Top Sellers

1
TCM
1
Tang Capital Management
California
$24.3M
2
DM
2
Deerfield Management
New York
$0
3
Citadel Advisors
3
Citadel Advisors
Florida
$1.44M
4
Millennium Management
4
Millennium Management
New York
$0
5
State Street
5
State Street
Massachusetts
$53.8M
Name Holding Trade Value Shares
Change 		Shares
Change %
DM
176
Deerfield Management
New York
– -$6.92M -108,750 Closed
Millennium Management
177
Millennium Management
New York
– -$5.15M -80,958 Closed
Balyasny Asset Management
178
Balyasny Asset Management
Illinois
– -$4.61M -72,512 Closed
Voloridge Investment Management
179
Voloridge Investment Management
Florida
– -$3.35M -52,612 Closed
Qube Research & Technologies (QRT)
180
Qube Research & Technologies (QRT)
United Kingdom
– -$2.33M -36,616 Closed
SI
181
Sofinnova Investments
California
– -$2.14M -33,641 Closed
MS
182
Maven Securities
Jersey
– -$795K -12,500 Closed
EGM
183
Engineers Gate Manager
New York
– -$747K -11,741 Closed
Federated Hermes
184
Federated Hermes
Pennsylvania
– -$699K -10,985 Closed
SFI
185
Susquehanna Fundamental Investments
Pennsylvania
– -$602K -9,471 Closed
GCP
186
GSA Capital Partners
United Kingdom
– -$311K -4,887 Closed
State of Wisconsin Investment Board
187
State of Wisconsin Investment Board
Wisconsin
– -$302K -4,746 Closed
NC
188
NinePointTwo Capital
California
– -$188K -2,961 Closed
SG Americas Securities
189
SG Americas Securities
New York
– -$134K -2,103 Closed
BC
190
Bridgefront Capital
Texas
– -$85K -1,337 Closed
PCM
191
Prelude Capital Management
New York
– -$84.8K -1,333 Closed
FRM
192
Fox Run Management
Connecticut
– -$74.2K -1,167 Closed
HSBC Holdings
193
HSBC Holdings
United Kingdom
– -$54K -859 Closed
BHCM
194
Boulder Hill Capital Management
New York
– -$50.6K -795 Closed
AC
195
AXQ Capital
New Jersey
– -$50.3K -791 Closed
VIA
196
Vident Investment Advisory
Georgia
– -$43.6K -686 Closed
BAM
197
Byrne Asset Management
New Jersey
– -$9K -145 Closed
ASN
198
Advisory Services Network
Georgia
– -$6.49K -102 Closed
RTL
199
Red Tortoise LLC
Georgia
– -$2.93K -46 Closed
Baillie Gifford & Co
200
Baillie Gifford & Co
United Kingdom
– -$2.74K -43 Closed
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