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Altimmune
ALT

158 hedge funds and large institutions have $157M invested in Altimmune in 2025 Q3 according to their latest regulatory filings, with 23 funds opening new positions, 57 increasing their positions, 48 reducing their positions, and 42 closing their positions.

New
Increased
Maintained
Reduced
Closed

32% more call options, than puts

Call options by funds: $18.7M | Put options by funds: $14.1M

19% more repeat investments, than reductions

Existing positions increased: 57 | Existing positions reduced: 48

8% more capital invested

Capital invested by funds: $146M → $157M (+$11M)

0.63% more ownership

Funds ownership: 46.37% → 47% (+0.63%)

12% less funds holding

Funds holding: 180 → 158 (-22)

45% less first-time investments, than exits

New positions opened: 23 | Existing positions closed: 42

Holders
158
Holders Change
-22
Holders Change %
-12.22%
% of All Funds
2.07%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
23
Increased
57
Reduced
48
Closed
42
Calls
$18.7M
Puts
$14.1M
Net Calls
+$4.55M
Net Calls Change
+$925K

Top Buyers

1
Two Sigma Investments
Two Sigma Investments
New York
+$6.02M
2
Two Sigma Advisers
Two Sigma Advisers
New York
+$5.02M
3
Vanguard Group
Vanguard Group
Pennsylvania
+$4.66M
4
State Street
State Street
Massachusetts
+$3.27M
5
Citadel Advisors
Citadel Advisors
Florida
+$2.93M

Top Sellers

1
Federated Hermes
Federated Hermes
Pennsylvania
-$3.53M
2
CM
Caption Management
Oklahoma
-$3.28M
3
TCM
Tang Capital Management
California
-$2.39M
4
Bank of America
Bank of America
North Carolina
-$1.53M
5
Group One Trading
Group One Trading
Illinois
-$1.27M
Name Holding Trade Value Shares
Change 		Change in
Stake
Mirae Asset Global Investments
126
Mirae Asset Global Investments
South Korea
$12.9K +$1.08K +279 +9%
NA
127
NewEdge Advisors
Louisiana
$12K -$1.16K -300 -9%
PNC Financial Services Group
128
PNC Financial Services Group
Pennsylvania
$10.9K +$4.6K +1,192 +71%
AB
129
Amalgamated Bank
New York
$9K – – –
Carson Wealth (CWM LLC)
130
Carson Wealth (CWM LLC)
Nebraska
$9K +$1.44K +373 +20%
AWM
131
Activest Wealth Management
Florida
$7.54K – – –
GFM
132
GF Fund Management
China
$7.16K +$301 +78 +4%
Zurich Cantonal Bank
133
Zurich Cantonal Bank
Switzerland
$4.24K -$1.88K -487 -30%
GLF
134
Groupe la Francaise
France
$3.87K +$4.63K +1,200 New
CTB
135
Country Trust Bank
Illinois
$3.77K – – –
NS
136
NBC Securities
Alabama
$3.77K – – –
GRP
137
Global Retirement Partners
California
$3.77K +$3.86K +1,000 New
HCM
138
Hollencrest Capital Management
California
$2.9K – – –
Bessemer Group
139
Bessemer Group
New Jersey
$2K -$166 -43 -6%
SHIM
140
Stone House Investment Management
Pennsylvania
$1.89K – – –
MPWT
141
MassMutual Private Wealth & Trust
Connecticut
$1.58K +$1.61K +418 New
EWP
142
Elevation Wealth Partners
California
$1.08K – – –
Daiwa Securities Group
143
Daiwa Securities Group
Japan
$1K – – –
Fifth Third Bancorp
144
Fifth Third Bancorp
Ohio
$943 – – –
AAS
145
Ameritas Advisory Services
Nebraska
$754 – – –
IA
146
IFP Advisors
Florida
$754 – – –
SCM
147
Sterling Capital Management
North Carolina
$743 +$39 +10 +5%
MCM
148
MAI Capital Management
Ohio
$566 +$579 +150 New
Northwestern Mutual Wealth Management
149
Northwestern Mutual Wealth Management
Wisconsin
$381 -$259 -67 -40%
Nisa Investment Advisors
150
Nisa Investment Advisors
Missouri
$358 -$1.08K -281 -75%
4 5
6
7 8

ALT Hedge Fund Activity: Q3 2025 in Review

158 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Altimmune (ALT) for Q3 2025, worth a combined $157M — up 7.6% from $146M a quarter earlier.

Sellers outnumbered buyers: 42 funds closed out of ALT and 23 opened new positions — a net loss of 19 holders — while 48 trimmed existing stakes and 57 added.

The largest buyer was Two Sigma Investments, adding an estimated $6.02M. The largest seller was Federated Hermes, cutting an estimated $3.53M.

  • 158 institutional investors held Altimmune (ALT) as of Q3 2025, down from 180 in Q2 2025.
  • Funds reported $157M of Altimmune stock for Q3 2025, up 7.6% quarter-over-quarter.
  • 23 funds opened new Altimmune positions in Q3 2025 and 42 closed out, a net change of -19 holders.
  • The largest Altimmune buyer in Q3 2025 was Two Sigma Investments, an estimated $6.02M added.
  • The largest Altimmune seller in Q3 2025 was Federated Hermes, an estimated $3.53M sold.

Based on aggregated 13F filings for Q3 2025.