ATYR

aTyr Pharma
ATYR

Overview Fund Activity

86 hedge funds and large institutions have $187M invested in aTyr Pharma in 2025 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 36 increasing their positions, 14 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
86
Holders Change
+9
Holders Change %
+11.69%
% of All Funds
1.17%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
25
Increased
36
Reduced
14
Closed
16
Calls
$778K
Puts
$2.32M
Net Calls
-$1.54M
Net Calls Change
-$1.5M

Top Buyers

1
OCA
Octagon Capital Advisors
New York
+$8.01M
2
UBS Group
UBS Group
Switzerland
+$4.25M
3
Millennium Management
Millennium Management
New York
+$3.72M
4
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$2.85M
5
Marshall Wace
Marshall Wace
United Kingdom
+$2.53M

Top Sellers

1
Point72 Asset Management
Point72 Asset Management
Connecticut
-$6.16M
2
LGM
Logos Global Management
California
-$3.62M
3
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$3.62M
4
CC
Checkpoint Capital
California
-$1.57M
5
6CM
683 Capital Management
New York
-$898K
Name Holding Trade Value Shares
Change 		Shares
Change %
Federated Hermes
1
Federated Hermes
Pennsylvania
$44.3M – – –
Fidelity Investments
2
Fidelity Investments
Massachusetts
$38.9M +$2.4M +796,100 +7%
Vanguard Group
3
Vanguard Group
Pennsylvania
$12.1M +$1.21M +401,808 +11%
OCA
4
Octagon Capital Advisors
New York
$10.7M +$8.01M +2,652,000 +295%
Point72 Asset Management
5
Point72 Asset Management
Connecticut
$8.59M -$6.16M -2,039,098 -42%
TM
6
Tikvah Management
North Carolina
$7.43M – – –
Susquehanna International Group
7
Susquehanna International Group
Pennsylvania
$5.23M +$2.85M +945,239 +120%
WP
8
Woodline Partners
California
$5.08M -$4.24K -1,405 -0.1%
UBS Group
9
UBS Group
Switzerland
$4.94M +$4.25M +1,407,610 +613%
Millennium Management
10
Millennium Management
New York
$4.83M +$3.72M +1,231,052 +335%
BlackRock
11
BlackRock
New York
$4.81M +$208K +68,868 +5%
Alyeska Investment Group
12
Alyeska Investment Group
Illinois
$3.86M -$1.64K -544 -0%
Geode Capital Management
13
Geode Capital Management
Massachusetts
$2.8M +$110K +36,393 +4%
Marshall Wace
14
Marshall Wace
United Kingdom
$2.53M +$2.53M +838,452 New
ABG
15
Ally Bridge Group
New York
$2.35M +$233K +77,290 +11%
IHAM
16
Integral Health Asset Management
New York
$2.11M +$982K +325,000 +87%
TCM
17
Tang Capital Management
California
$2.03M – – –
MCM
18
MAI Capital Management
Ohio
$1.99M +$1.99M +658,115 +306,100%
EAM
19
Erste Asset Management
Austria
$1.81M +$1.81M +600,000 New
Renaissance Technologies
20
Renaissance Technologies
New York
$1.45M -$285K -94,500 -16%
Qube Research & Technologies (QRT)
21
Qube Research & Technologies (QRT)
United Kingdom
$1.25M -$46.6K -15,432 -4%
Goldman Sachs
22
Goldman Sachs
New York
$1.15M +$364K +120,496 +46%
State Street
23
State Street
Massachusetts
$1.11M +$202K +66,800 +22%
GCP
24
GSA Capital Partners
United Kingdom
$1M +$175K +57,898 +21%
Bank of America
25
Bank of America
North Carolina
$871K +$595K +197,087 +216%
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