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Altimmune

173 hedge funds and large institutions have $214M invested in Altimmune in 2026 Q1 according to their latest regulatory filings, with 30 funds opening new positions, 82 increasing their positions, 34 reducing their positions, and 33 closing their positions.

New
Increased
Maintained
Reduced
Closed

225% more call options, than puts

Call options by funds: $10.4M | Put options by funds: $3.21M

141% more repeat investments, than reductions

Existing positions increased: 82 | Existing positions reduced: 34

8% more capital invested

Capital invested by funds: $198M → $214M (+$15.5M)

0.76% more ownership

Funds ownership: 52.56%53.32% (+0.76%)

9% less first-time investments, than exits

New positions opened: 30 | Existing positions closed: 33

4% less funds holding

Funds holding: 181173 (-8)

Holders
173
Holders Change
-8
Holders Change %
-4.42%
% of All Funds
2.13%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
30
Increased
82
Reduced
34
Closed
33
Calls
$10.4M
Puts
$3.21M
Net Calls
+$7.22M
Net Calls Change
+$9.84M
Name Holding Trade Value Shares
Change
Change in
Stake
Bank of New York Mellon
26
Bank of New York Mellon
New York
$1.27M +$252K +59,302 +17%
BWCS
27
Beirne Wealth Consulting Services
Connecticut
$1.27M +$150K +35,400 +9%
Charles Schwab
28
Charles Schwab
California
$1.08M +$289K +68,012 +24%
SPIA
29
Steward Partners Investment Advisory
New York
$775K +$27.1K +6,388 +3%
Wellington Management Group
30
Wellington Management Group
Massachusetts
$764K -$38.7K -9,113 -4%
MP
31
Mangrove Partners
Connecticut
$737K +$1.02M +239,280 New
Baird Financial Group
32
Baird Financial Group
Wisconsin
$732K +$501K +118,082 +99%
BWM
33
Brown Wealth Management
Illinois
$727K -$95.7K -22,537 -9%
Rafferty Asset Management
34
Rafferty Asset Management
New York
$712K +$151K +35,505 +18%
Invesco
35
Invesco
Georgia
$702K +$55.3K +13,033 +6%
HWAM
36
Hennion & Walsh Asset Management
New Jersey
$622K -$53.7K -12,643 -6%
Barclays
37
Barclays
United Kingdom
$594K -$882K -207,724 -52%
Janney Montgomery Scott
38
Janney Montgomery Scott
Pennsylvania
$532K +$297K +70,000 +68%
Commonwealth Equity Services
39
Commonwealth Equity Services
Massachusetts
$494K -$89.6K -21,109 -12%
KCM
40
Knoll Capital Management
Florida
$493K -$4.08M -961,524 -86%
RhumbLine Advisers
41
RhumbLine Advisers
Massachusetts
$479K +$145K +34,158 +28%
HSBC Holdings
42
HSBC Holdings
United Kingdom
$476K +$94K +22,144 +17%
Stifel Financial
43
Stifel Financial
Missouri
$415K +$47.6K +11,200 +9%
WE
44
Wealth Effects
Massachusetts
$406K +$85.8K +20,200 +18%
Man Group
45
Man Group
United Kingdom
$400K +$471K +110,910 +586%
Grantham, Mayo, Van Otterloo & Co (GMO)
46
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
$389K -$196K -46,170 -27%
Deutsche Bank
47
Deutsche Bank
Germany
$384K +$189K +44,576 +56%
JP Morgan Chase
48
JP Morgan Chase
New York
$367K +$97.5K +22,966 +22%
EGM
49
Engineers Gate Manager
New York
$358K +$122K +28,848 +33%
JFG
50
Jefferies Financial Group
New York
$339K -$203K -47,800 -30%