ALT Institutional Ownership
Who owns Altimmune, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 210 funds reported holding ALT at Jun 30, 2026, together owning 77.9% of the company.
- ▲145 buying vs 51 selling
- ▲Held by funds +42.3 pts
- ▲Funds holding +37
- ▲Superinvestors: 4 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 210 | 173 | +21.4% |
| In funds' top 10 | 0 | 0 | – |
| 13F shares | 152M | 69.4M | +118.5% |
| Held by funds | 77.9% | 35.7% | +42.3 pts |
| New positions | 58 | 25 | +132.0% |
| Increased | 87 | 81 | +7.4% |
| Reduced | 33 | 35 | −5.7% |
| Sold out | 18 | 35 | −48.6% |
| Calls (shares) | 58K | 53K | +9.8% |
| Puts (shares) | 0 | 800 | −100.0% |
| Put/call ratio | 0.00 | 0.02 | −100.0% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ALT
All superinvestors →
Who owns ALT
share of fund held shares- Index and passive funds38.0%
- Active managers and hedge funds56.2%
- Banks and brokers5.6%
- Pensions, insurers and other0.2%
The top 10 holders own 67.5% of all ALT shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
43 funds changed their position- Hennion & Walsh Asset Management, Inc.Added+227K sh
- Kingswood Wealth Advisors, LLCSold out−75K sh
- Alps Advisors IncAdded+59K sh
- Creative PlanningTrimmed−57K sh
- Profund Advisors LLCTrimmed−44K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 10.48% | 20.4M | $62M | +7.6M |
| 2 | Deep Track Capital, LP | 9.90% | 19.3M | $58.5M | +19.3M |
| 3 | State Street Corp | 6.22% | 12.1M | $36.8M | +5M |
| 4 | TCG Crossover Management, LLC | 5.14% | 10M | $30.4M | +10M |
| 5 | Vanguard Capital Management LLC | 4.20% | 8.2M | $24.9M | +2.5M |
| 6 | Vanguard Portfolio Management LLC | 3.77% | 7.3M | $22.3M | +1.9M |
| 7 | Marshall Wace, LLP | 3.52% | 6.8M | $20.8M | +2.8M |
| 8 | Viking Global Investors LP | 3.44% | 6.7M | $20.4M | +6.7M |
| 9 | RA Capital Management, L.P. | 3.34% | 6.5M | $19.8M | +6.5M |
| 10 | Geode Capital Management, LLC | 2.58% | 5M | $15.2M | +1.9M |
- Deep Track Capital, LP+19.3M sh+$58.5M
- TCG Crossover Management, LLC+10M sh+$30.4M
- BlackRock, Inc.+7.6M sh+$23.1M
- Viking Global Investors LP+6.7M sh+$20.4M
- RA Capital Management, L.P.+6.5M sh+$19.8M
- State Street Corp+5M sh+$15.1M
- Woodline Partners LP+3.4M sh+$10.3M
- Nantahala Capital Management, LLC+3M sh+$9.1M
- Alyeska Investment Group, L.P.−2.6M sh−$8.1M
- Schroder Investment Management Group−668K sh−$1.9M
- Susquehanna International Group, LLP−595K sh−$1.8M
- D. E. Shaw & Co., Inc.−525K sh−$1.6M
- Dimensional Fund Advisors LP−406K sh−$1.2M
- Point72 Asset Management, L.P.−178K sh−$542K
- Two Sigma Investments, LP−98K sh−$297K
- HSBC Holdings PLC−90K sh−$278K
ALT institutional ownership FAQ
Who owns the most ALT stock?
In Q2 2026 13F filings the largest holder of ALT was BlackRock, Inc., followed by Deep Track Capital, LP and State Street Corp. Index fund managers are usually the biggest holders of large companies.
What percentage of ALT is owned by institutions?
Funds that file 13F reports held 77.9% of ALT's shares at Jun 30, 2026, compared with 35.7% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ALT?
In Q2 2026, 145 funds bought ALT (58 of them new positions) and 51 sold (18 sold out completely). Among well known investors, 4 added and 1 cut. Our fund sentiment for ALT is strongly bullish.
What is ALT's institutional put/call ratio?
Funds reported $0 of ALT puts against $176K of calls, a put/call ratio of 0.00 (0.02 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this ALT ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.