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Day One Biopharmaceuticals
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Overview Fund Activity

139 hedge funds and large institutions have $941M invested in Day One Biopharmaceuticals in 2023 Q2 according to their latest regulatory filings, with 39 funds opening new positions, 60 increasing their positions, 23 reducing their positions, and 25 closing their positions.

Holders
139
Holders Change
+14
Holders Change %
+11.2%
% of All Funds
2.19%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
39
Increased
60
Reduced
23
Closed
25
Calls
$1.74M
Puts
$1.31M
Net Calls
+$429K
Net Calls Change
-$526K

Top Buyers

1
Adage Capital Partners
1
Adage Capital Partners
Massachusetts
$29.2M
2
BlackRock
2
BlackRock
New York
$42.6M
3
DM
3
Deerfield Management
New York
$15.2M
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$51.1M
5
PHS
5
PFM Health Sciences
California
$13.7M

Top Sellers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$90.3M
2
Lord, Abbett & Co
2
Lord, Abbett & Co
New Jersey
$0
3
Renaissance Technologies
3
Renaissance Technologies
New York
$1.66M
4
D.E. Shaw & Co
4
D.E. Shaw & Co
New York
$2.55M
5
CSS
5
Cubist Systematic Strategies
Connecticut
$0
Name Market Value Shares Shares
Change 		Shares
Change %
RCM
1
RA Capital Management
Massachusetts
$93.2M 7,809,852 +769,230 +11%
AVLSA
2
Atlas Venture Life Science Advisors
Massachusetts
$90.8M 7,608,394 – –
Fidelity Investments
3
Fidelity Investments
Massachusetts
$90.3M 7,559,903 -1,012,280 -12%
Vanguard Group
4
Vanguard Group
Pennsylvania
$51.1M 4,283,664 +1,151,683 +37%
Franklin Resources
5
Franklin Resources
California
$48.5M 4,065,668 +658,797 +19%
BlackRock
6
BlackRock
New York
$42.6M 3,564,733 +1,306,238 +58%
B
7
Braidwell
Connecticut
$40.1M 3,361,813 +201,918 +6%
State Street
8
State Street
Massachusetts
$40.1M 3,354,326 +1,097,535 +49%
Viking Global Investors
9
Viking Global Investors
Connecticut
$30.5M 2,558,563 +1,000,000 +64%
CPX
10
Canaan Partners XI
California
$30.4M 2,548,403 – –
Adage Capital Partners
11
Adage Capital Partners
Massachusetts
$29.2M 2,442,500 +1,702,500 +230%
Goldman Sachs
12
Goldman Sachs
New York
$28.6M 2,392,523 +109,187 +5%
T. Rowe Price Associates
13
T. Rowe Price Associates
Maryland
$27.6M 2,309,731 +644,980 +39%
NIP
14
Nicholas Investment Partners
California
$26.7M 2,237,111 +633,721 +40%
PCH
15
Polar Capital Holdings
United Kingdom
$21.2M 1,774,615 +375,067 +27%
DM
16
Deerfield Management
New York
$15.2M 1,269,992 +1,269,992 New
BC
17
Boxer Capital
California
$14.2M 1,189,943 – –
PHS
18
PFM Health Sciences
California
$13.7M 1,147,140 +1,147,140 New
BBA
19
Baker Bros. Advisors
New York
$11.9M 1,000,000 +1,000,000 New
Geode Capital Management
20
Geode Capital Management
Massachusetts
$11M 925,216 +336,740 +57%
TCM
21
TimesSquare Capital Management
New York
$9.62M 805,700 +805,700 New
Marshall Wace
22
Marshall Wace
United Kingdom
$9.43M 789,632 +789,632 New
Citadel Advisors
23
Citadel Advisors
Florida
$9.22M 772,156 +378,072 +96%
CC
24
Commodore Capital
New York
$8.83M 739,661 – –
Janus Henderson Group
25
Janus Henderson Group
United Kingdom
$8.21M 687,510 +124,716 +22%
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