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Generation Bio
GBIO

Overview Fund Activity

88 hedge funds and large institutions have $1.27B invested in Generation Bio in 2021 Q1 according to their latest regulatory filings, with 30 funds opening new positions, 44 increasing their positions, 8 reducing their positions, and 9 closing their positions.

Holders
88
Holders Change
+20
Holders Change %
+29.41%
% of All Funds
1.55%
Holding in Top 10
1
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-75%
% of All Funds
0.02%
New
30
Increased
44
Reduced
8
Closed
9
Calls
–
Puts
$6.11M
Net Calls
-$6.11M
Net Calls Change
-$6.11M

Top Buyers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$185M
2
Vanguard Group
2
Vanguard Group
Pennsylvania
$83.5M
3
State Street
3
State Street
Massachusetts
$60.1M
4
BlackRock
4
BlackRock
New York
$82.9M
5
CG
5
Carmignac Gestion
France
$43.7M

Top Sellers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$16.3M
2
FCMI
2
Foresite Capital Management IV
California
$0
3
TOCUITCONY
3
Trustees of Columbia University in the City of New York
New York
$0
4
DM
4
Deerfield Management
New York
$25.6M
5
Millennium Management
5
Millennium Management
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
American Century Companies
26
American Century Companies
Missouri
$4.06M 142,494 +22,572 +19%
D.E. Shaw & Co
27
D.E. Shaw & Co
New York
$3.82M 134,060 +117,707 +720%
Voloridge Investment Management
28
Voloridge Investment Management
Florida
$3.64M 127,906 +127,906 New
LCM
29
Laurion Capital Management
New York
$3.56M 125,000 +125,000 New
Citigroup
30
Citigroup
New York
$3.43M 120,349 +116,395 +2,944%
Nuveen Asset Management
31
Nuveen Asset Management
Illinois
$3.36M 118,120 +71,512 +153%
Rafferty Asset Management
32
Rafferty Asset Management
New York
$2.73M 95,875 +95,875 New
Swiss National Bank
33
Swiss National Bank
Switzerland
$1.99M 70,000 +43,800 +167%
PMAM
34
Penn Mutual Asset Management
Pennsylvania
$1.94M 68,065 +27,520 +68%
California State Teachers Retirement System (CalSTRS)
35
California State Teachers Retirement System (CalSTRS)
California
$1.73M 60,774 +42,193 +227%
Simplex Trading
36
Simplex Trading
Illinois
$1.59M 56,030 +56,030 New
State of Wisconsin Investment Board
37
State of Wisconsin Investment Board
Wisconsin
$1.55M 54,300 +37,000 +214%
AllianceBernstein
38
AllianceBernstein
Tennessee
$1.31M 46,006 +46,006 New
RhumbLine Advisers
39
RhumbLine Advisers
Massachusetts
$1.2M 42,195 +28,495 +208%
Susquehanna International Group
40
Susquehanna International Group
Pennsylvania
$1.16M 40,697 +40,697 New
Citadel Advisors
41
Citadel Advisors
Florida
$1.04M 36,483 +36,483 New
Los Angeles Capital Management
42
Los Angeles Capital Management
California
$933K 32,792 +32,792 New
UBS Group
43
UBS Group
Switzerland
$774K 27,185 +27,185 New
CS
44
Credit Suisse
Switzerland
$641K 22,553 +1,500 +7%
California Public Employees Retirement System
45
California Public Employees Retirement System
California
$635K 22,300 -2,057 -8%
New York State Common Retirement Fund
46
New York State Common Retirement Fund
New York
$632K 22,200 +11,000 +98%
Manulife (Manufacturers Life Insurance)
47
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$627K 22,020 +14,841 +207%
SAM
48
Sectoral Asset Management
Quebec, Canada
$613K 21,522 +21,522 New
Ameriprise
49
Ameriprise
Minnesota
$584K 20,522 -4,284 -17%
SFI
50
Susquehanna Fundamental Investments
Pennsylvania
$555K 19,500 – –
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