BLUE

bluebird bio

Delisted

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

172 hedge funds and large institutions have $581M invested in bluebird bio in 2021 Q4 according to their latest regulatory filings, with 27 funds opening new positions, 21 increasing their positions, 119 reducing their positions, and 49 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less call options, than puts

Call options by funds: $ | Put options by funds: $

less capital invested

Capital invested by funds: $ → $

45% less first-time investments, than exits

New positions opened: 27 | Existing positions closed: 49

82% less repeat investments, than reductions

Existing positions increased: 21 | Existing positions reduced: 119

Holders
172
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$4.38M
Puts
$6.11M
Net Calls
Net Calls Change

Top Buyers

1 +$16.5M
2 +$7.15M
3 +$5.19M
4
Rafferty Asset Management
Rafferty Asset Management
New York
+$3.19M
5
Citigroup
Citigroup
New York
+$2.77M

Top Sellers

1 -$45.4M
2 -$37.1M
3 -$29.9M
4
SC
Sessa Capital
New York
-$19.2M
5
EC
EcoR1 Capital
California
-$15.3M
Name Holding Trade Value Shares
Change
Change in
Stake
101
$156K
102
$153K
103
$146K
104
$138K
105
$136K
106
$129K
107
$128K
108
$128K
109
$112K
110
$111K
111
$108K
112
$101K
113
$101K
114
$96K
115
$91K
116
$87K
117
$76K
118
$75K
119
$53K
120
$49K
121
$47K
122
$38K
123
$28K
124
$21K
125
$15K