Security record · archived quarter
ALT
Altimmune, Inc. · Healthcare · Biotechnology
77Tracked holders
+2Δ holders
45.71MShares held
$165.02MReported value
+3New positions
−1Exits
Momentum inputs (comparable managers):
holder breadth +2.7% ·
share flow +26.4% ·
net new positions +2.6%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 82 | +6 | 85.94M | $261.24M | +14 | −8 |
| Q1 2026 | 78 | 0 | 58.31M | $179.46M | +8 | −8 |
| Q4 2025 | 77 | +2 | 45.71M | $165.02M | +3 | −1 |
| Q3 2025 | 15 | 0 | 25.85M | $97.47M | +1 | −1 |
| Q2 2025 | 12 | +1 | 18.03M | $69.77M | +1 | — |
| Q1 2025 | 8 | -2 | 8.83M | $44.16M | — | −2 |
| Q4 2024 | 10 | +1 | 7.53M | $54.26M | +1 | — |
| Q3 2024 | 8 | 0 | 3.66M | $22.46M | — | — |
| Q2 2024 | 8 | — | 3.17M | $21.05M | — | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 9.70M | +52.3% | $35.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 9.49M | +48.9% | $34.26M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | The Vanguard Group ✦ (passive) | 9.49M | +48.9% | $34.26M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | The Vanguard Group ✦ (passive) | 9.49M | +48.9% | $34.26M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | State Street Global Advisors ✦ (passive) | 5.12M | +42.2% | $18.48M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | Geode Capital Management ✦ (passive) | 2.29M | +13.6% | $8.28M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 16 | Geode Capital Management ✦ (passive) | 2.29M | +13.6% | $8.28M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 17 | Jane Street Group, Llc | 1.78M | — | $6.44M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | Jane Street Group, Llc | 1.78M | — | $6.44M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Susquehanna International Group, Llp | 1.37M | — | $4.94M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | Morgan Stanley ✦ | 1.36M | -8.8% | $4.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | Morgan Stanley ✦ | 1.36M | -8.8% | $4.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | Morgan Stanley ✦ | 1.36M | -8.8% | $4.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 23 | Morgan Stanley ✦ | 1.36M | -8.8% | $4.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 24 | Morgan Stanley ✦ | 1.36M | -8.8% | $4.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 1.36M | -8.8% | $4.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 26 | Morgan Stanley ✦ | 1.36M | -8.8% | $4.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Goldman Sachs Group ✦ | 1.35M | +140.0% | $4.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | Goldman Sachs Group ✦ | 1.35M | +140.0% | $4.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 29 | D. E. Shaw & Co. ✦ | 1.34M | +272.8% | $4.85M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 30 | Citadel Advisors ✦ | 1.34M | +4.4% | $4.83M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 31 | Citadel Advisors ✦ | 1.34M | +4.4% | $4.83M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 32 | Two Sigma Investments ✦ | 1.27M | -36.6% | $4.57M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 33 | Nuveen, LLC | 1.24M | — | $4.49M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Nuveen, LLC | 1.24M | — | $4.49M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Marshall Wace ✦ | 922.78K | New | $3.33M | 0.0% | New | 1 | SEC ↗ |
| 36 | Marshall Wace ✦ | 922.78K | New | $3.33M | 0.0% | New | 1 | SEC ↗ |
| 37 | Northern Trust Corp | 715.99K | — | $2.58M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Northern Trust Corp | 715.99K | — | $2.58M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Northern Trust Corp | 715.99K | — | $2.58M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | UBS Group AG | 642.05K | — | $2.32M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | UBS Group AG | 642.05K | — | $2.32M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | UBS Group AG | 642.05K | — | $2.32M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Fidelity (FMR) ✦ | 564.09K | +26.7% | $2.04M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 44 | Fidelity (FMR) ✦ | 564.09K | +26.7% | $2.04M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 45 | Barclays Plc | 400.60K | — | $1.45M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Barclays Plc | 400.60K | — | $1.45M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Bank Of America Corp /De/ | 383.78K | — | $1.39M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Bank Of America Corp /De/ | 383.78K | — | $1.39M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Bank Of America Corp /De/ | 383.78K | — | $1.39M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Bank Of America Corp /De/ | 383.78K | — | $1.39M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | Bank Of America Corp /De/ | 383.78K | — | $1.39M | 0.0% | n/c | 1 | SEC ↗ |
| 52 | Bank of New York Mellon Corp | 354.20K | — | $1.28M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Bank of New York Mellon Corp | 354.20K | — | $1.28M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Bank of New York Mellon Corp | 354.20K | — | $1.28M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Bank of New York Mellon Corp | 354.20K | — | $1.28M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Dimensional Fund Advisors Lp | 283.70K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Dimensional Fund Advisors Lp | 283.70K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Dimensional Fund Advisors Lp | 283.70K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Charles Schwab Investment… | 283.67K | — | $1.02M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Hsbc Holdings Plc | 264.44K | — | $948,024 | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Hsbc Holdings Plc | 264.44K | — | $948,024 | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Wellington Management ✦ | 257.27K | -2.8% | $928,748 | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 63 | Wellington Management ✦ | 257.27K | -2.8% | $928,748 | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 64 | Wellington Management ✦ | 257.27K | -2.8% | $928,748 | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 65 | Invesco Ltd. | 214.82K | — | $775,515 | 0.0% | n/c | 1 | SEC ↗ |
| 66 | Invesco Ltd. | 214.82K | — | $775,515 | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Invesco Ltd. | 214.82K | — | $775,515 | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Millennium Management ✦ | 207.38K | -43.6% | $748,653 | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 69 | Commonwealth Equity Services, Llc | 181.48K | — | $655,150 | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Bnp Paribas Financial Markets | 177.31K | — | $640,071 | 0.0% | n/c | 1 | SEC ↗ |
| 71 | IMC-Chicago, LLC | 173.13K | — | $624,999 | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Grantham, Mayo, Van Otterloo & Co.… | 172.56K | — | $622,938 | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Wells Fargo & Company/Mn | 141.28K | — | $510,028 | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Wells Fargo & Company/Mn | 141.28K | — | $510,028 | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Wells Fargo & Company/Mn | 141.28K | — | $510,028 | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Stifel Financial Corp | 123.42K | — | $445,535 | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Rhumbline Advisers | 121.51K | — | $438,652 | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Baird Financial Group, Inc. | 119.44K | — | $431,178 | 0.0% | n/c | 1 | SEC ↗ |
| 79 | JPMorgan Chase ✦ | 104.53K | -47.3% | $377,361 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 80 | JPMorgan Chase ✦ | 104.53K | -47.3% | $377,361 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 81 | JPMorgan Chase ✦ | 104.53K | -47.3% | $377,361 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 82 | JPMorgan Chase ✦ | 104.53K | -47.3% | $377,361 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 83 | Nomura Asset Management… | 100.00K | — | $361,000 | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Deutsche Bank Ag\ | 79.94K | — | $288,583 | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Deutsche Bank Ag\ | 79.94K | — | $288,583 | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Ameriprise Financial Inc | 73.84K | — | $266,557 | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Ameriprise Financial Inc | 73.84K | — | $266,557 | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Ameriprise Financial Inc | 73.84K | — | $266,557 | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Alliancebernstein L.P. | 71.76K | — | $259,054 | 0.0% | n/c | 1 | SEC ↗ |
| 90 | LMR Partners LLP | 61.30K | — | $221,293 | 0.0% | n/c | 1 | SEC ↗ |
| 91 | Balyasny Asset Management L.P. | 60.11K | — | $216,993 | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Blair William & Co/Il | 56.43K | — | $203,727 | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Raymond James Financial Inc | 55.86K | — | $201,651 | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Raymond James Financial Inc | 55.86K | — | $201,651 | 0.0% | n/c | 1 | SEC ↗ |
| 95 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 52.57K | — | $189,763 | 0.0% | n/c | 1 | SEC ↗ |
| 96 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 52.57K | — | $189,763 | 0.0% | n/c | 1 | SEC ↗ |
| 97 | T. Rowe Price ✦ | 49.88K | +20.2% | $181,000 | 0.0% | ▲ Add | 7 | SEC ↗ |
| 98 | LPL Financial LLC | 48.63K | — | $175,540 | 0.0% | n/c | 1 | SEC ↗ |
| 99 | Creative Planning | 46.89K | — | $169,258 | 0.0% | n/c | 1 | SEC ↗ |
| 100 | Rockefeller Capital Management L.P. | 43.17K | — | $155,833 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $3.33M | 0.0% |
| Marshall Wace | $3.33M | 0.0% |
Exited
| Point72 Asset Management | $1.80M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 170 holders, 69.15M shares, $212.24M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Aug 13
Durso Jerome Benedict
Officer, Director · President and CEO · 15.00K sh @ 2.95 · $44,250
Open-market sales (S)
No open-market insider sales in our coverage window.
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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