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GBIO

Generation Bio
GBIO

Delisted

GBIO was delisted on the 6th of February, 2026.

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88 hedge funds and large institutions have $390M invested in Generation Bio in 2021 Q4 according to their latest regulatory filings, with 22 funds opening new positions, 29 increasing their positions, 23 reducing their positions, and 14 closing their positions.

New
Increased
Maintained
Reduced
Closed

57% more first-time investments, than exits

New positions opened: 22 | Existing positions closed: 14

26% more repeat investments, than reductions

Existing positions increased: 29 | Existing positions reduced: 23

21% more call options, than puts

Call options by funds: $110K | Put options by funds: $91K

9% more funds holding

Funds holding: 81 → 88 (+7)

1.21% more ownership

Funds ownership: 8.45% → 9.66% (+1.2%)

68% less capital invested

Capital invested by funds: $1.2B → $390M (-$813M)

Holders
88
Holders Change
+7
Holders Change %
+8.64%
% of All Funds
1.35%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.02%
New
22
Increased
29
Reduced
23
Closed
14
Calls
$110K
Puts
$91K
Net Calls
+$19K
Net Calls Change
+$2.7M

Top Buyers

Rank Fund Capital Flow
1
BG
Bellevue Group
Switzerland
+$24.4M
2
Millennium Management
Millennium Management
New York
+$9.4M
3
YCM
Yiheng Capital Management
California
+$6.55M
4
Two Sigma Investments
Two Sigma Investments
New York
+$4.24M
5
Renaissance Technologies
Renaissance Technologies
New York
+$4M

Top Sellers

Rank Fund Capital Flow
1
CG
Carmignac Gestion
France
-$36.9M
2
JP Morgan Chase
JP Morgan Chase
New York
-$21.8M
3
Victory Capital Management
Victory Capital Management
Texas
-$20.5M
4
Ensign Peak Advisors
Ensign Peak Advisors
Utah
-$10.8M
5
Goldman Sachs
Goldman Sachs
New York
-$4.85M
Name Holding Trade Value Shares
Change 		Change in
Stake
Canada Life
76
Canada Life
Manitoba, Canada
$14K +$3.67K +21 +11%
S
77
SignatureFD
Georgia
$10K +$24.4K +140 +4,667%
CLOS
78
Compagnie Lombard Odier SCmA
Switzerland
$7K – – –
MCM
79
Manchester Capital Management
Vermont
$7K – – –
Nisa Investment Advisors
80
Nisa Investment Advisors
Missouri
$5K -$52.4K -300 -79%
PHK
81
Point72 Hong Kong
Hong Kong
$5K +$9.78K +56 +560%
Macquarie Group
82
Macquarie Group
Australia
$4K – – –
PA
83
Parallel Advisors
California
$3K +$6.81K +39 New
QT
84
Quantbot Technologies
New York
$2K -$3.49K -20 -40%
Daiwa Securities Group
85
Daiwa Securities Group
Japan
$1K – – –
Manulife (Manufacturers Life Insurance)
86
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$166 +$14K +80 +4%
CG
87
Carmignac Gestion
France
– -$36.9M -147,262 Closed
LCM
88
Laurion Capital Management
New York
– -$2.29M -9,135 Closed
Voloridge Investment Management
89
Voloridge Investment Management
Florida
– -$1.67M -6,661 Closed
PMAM
90
Penn Mutual Asset Management
Pennsylvania
– -$1.63M -6,504 Closed
Ameriprise
91
Ameriprise
Minnesota
– -$793K -3,164 Closed
SG Americas Securities
92
SG Americas Securities
New York
– -$552K -2,201 Closed
Principal Financial Group
93
Principal Financial Group
Iowa
– -$494K -1,968 Closed
ASRS
94
Arizona State Retirement System
Arizona
– -$251K -1,003 Closed
Handelsbanken Fonder
95
Handelsbanken Fonder
Sweden
– -$238K -950 Closed
State Board of Administration of Florida Retirement System
96
State Board of Administration of Florida Retirement System
Florida
– -$201K -802 Closed
TIM
97
Tortoise Investment Management
New York
– -$83K -333 Closed
PCM
98
Penserra Capital Management
California
– -$32K -130 Closed
RFWA
99
RPg Family Wealth Advisory
Massachusetts
– -$19K -76 Closed
TWA
100
TCI Wealth Advisors
Arizona
– -$4K -14 Closed
1 2 3
4
5

GBIO Hedge Fund Activity: Q4 2021 in Review

88 of the 6,499 institutional investors tracked by Wall St. Rank reported a position in Generation Bio (GBIO) for Q4 2021, worth a combined $390M — down 68% from $1.2B a quarter earlier.

Buyers outnumbered sellers: 22 funds opened new GBIO positions and 14 closed out — a net gain of 8 holders — while 29 added to existing stakes and 23 trimmed.

The largest buyer was Bellevue Group, adding an estimated $24.4M. The largest seller was Carmignac Gestion, exiting entirely with an estimated $36.9M sold.

  • 88 institutional investors held Generation Bio (GBIO) as of Q4 2021, up from 81 in Q3 2021.
  • Funds reported $390M of Generation Bio stock for Q4 2021, down 68% quarter-over-quarter.
  • 22 funds opened new Generation Bio positions in Q4 2021 and 14 closed out, a net change of +8 holders.
  • The largest Generation Bio buyer in Q4 2021 was Bellevue Group, an estimated $24.4M added.
  • The largest Generation Bio seller in Q4 2021 was Carmignac Gestion, an estimated $36.9M sold.

Based on aggregated 13F filings for Q4 2021.