BLUE

bluebird bio

Delisted

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

196 hedge funds and large institutions have $996M invested in bluebird bio in 2021 Q3 according to their latest regulatory filings, with 26 funds opening new positions, 63 increasing their positions, 60 reducing their positions, and 58 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

49% less call options, than puts

Call options by funds: $9.13M | Put options by funds: $17.8M

55% less first-time investments, than exits

New positions opened: 26 | Existing positions closed: 58

100% less funds holding in top 10

Funds holding in top 10: 10 (-1)

Holders
196
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
$9.13M
Puts
$17.8M
Net Calls
Net Calls Change

Top Buyers

1 +$43.4M
2 +$33M
3 +$15.3M
4
AC
Armistice Capital
New York
+$12.2M
5
SC
Sessa Capital
New York
+$12.1M

Top Sellers

1 -$40.1M
2 -$37M
3 -$18M
4
DM
Deerfield Management
New York
-$15.4M
5
CS
Credit Suisse
Switzerland
-$12.1M
Name Holding Trade Value Shares
Change
Change in
Stake
126
$167K
127
$147K
128
$143K
129
$126K
130
$124K
131
$101K
132
$69K
133
$69K
134
$58K
135
$46K
136
$46K
137
$44K
138
$39K
139
$33K
140
$33K
141
$32K
142
$31K
143
$30K
144
$29K
145
$23K
146
$20K
147
$19K
148
$17K
149
$16K
150
$14K