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Eton Pharmaceutcials

116 hedge funds and large institutions have $439M invested in Eton Pharmaceutcials in 2026 Q1 according to their latest regulatory filings, with 30 funds opening new positions, 36 increasing their positions, 32 reducing their positions, and 17 closing their positions.

New
Increased
Maintained
Reduced
Closed

400% more funds holding in top 10

Funds holding in top 10: 15 (+4)

76% more first-time investments, than exits

New positions opened: 30 | Existing positions closed: 17

58% more capital invested

Capital invested by funds: $277M → $439M (+$161M)

25% more call options, than puts

Call options by funds: $4.17M | Put options by funds: $3.33M

13% more repeat investments, than reductions

Existing positions increased: 36 | Existing positions reduced: 32

12% more funds holding

Funds holding: 104116 (+12)

4% more ownership

Funds ownership: 61.18%65.18% (+4%)

Holders
116
Holders Change
+12
Holders Change %
+11.54%
% of All Funds
1.43%
Holding in Top 10
5
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+400%
% of All Funds
0.06%
New
30
Increased
36
Reduced
32
Closed
17
Calls
$4.17M
Puts
$3.33M
Net Calls
+$834K
Net Calls Change
-$979K
Name Holding Trade Value Shares
Change
Change in
Stake
OM
1
Opaleye Management
Massachusetts
$70.6M
EC
2
EcoR1 Capital
California
$53.6M +$2.47M +141,394 +7%
BlackRock
3
BlackRock
New York
$42.4M -$378K -21,621 -1%
NCM
4
Nantahala Capital Management
Connecticut
$29M
VCM
5
Vanguard Capital Management
Pennsylvania
$24.5M +$17.4M +994,089 New
Geode Capital Management
6
Geode Capital Management
Massachusetts
$14.3M +$221K +12,615 +2%
State Street
7
State Street
Massachusetts
$13.1M +$495K +28,290 +6%
NPT
8
National Philanthropic Trust
Pennsylvania
$12.1M
Morgan Stanley
9
Morgan Stanley
New York
$11.8M -$279K -15,957 -3%
WIM
10
Westside Investment Management
California
$11.5M -$52.9K -3,025 -0.6%
OAM
11
Oberweis Asset Management
Illinois
$10.8M +$140K +8,000 +2%
TSW
12
Thompson Siegel & Walmsley
Virginia
$10M -$42.9K -2,452 -0.6%
PLC
13
Pillsbury Lake Capital
California
$9.01M +$6.38M +364,954 New
CC
14
Cannell Capital
Wyoming
$8.44M +$2.19M +125,068 +58%
BNP Paribas Financial Markets
15
BNP Paribas Financial Markets
France
$7.46M +$431K +24,650 +9%
Northern Trust
16
Northern Trust
Illinois
$5.87M +$105K +5,983 +3%
Goldman Sachs
17
Goldman Sachs
New York
$5.37M +$370K +21,183 +11%
PCM
18
Prelude Capital Management
New York
$4.66M +$2.51M +143,477 +317%
AC
19
Aristides Capital
Kentucky
$4.59M +$430K +24,605 +15%
PC
20
Panoramic Capital
California
$4.57M +$3.23M +185,000 New
LK
21
Lumbard & Kellner
New Hampshire
$4.34M +$16.9K +967 +0.6%
WP
22
Woodline Partners
California
$4.21M +$1.32M +75,212 +79%
UBS Group
23
UBS Group
Switzerland
$4.17M +$739K +42,284 +33%
SCM
24
Soleus Capital Management
Connecticut
$4.11M +$2.91M +166,381 New
VFT
25
Vanguard Fiduciary Trust
Pennsylvania
$4.07M +$2.88M +164,715 New