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ALT — ALTIMMUNE INC

Reported value held$212.27M
Funds holding (latest)37
SectorHealth Care
Funds holding (Q2 2026)31
Institutional value$177.45M · 58.54M sh
New / Add / Cut / Exit3 / 23 / 5 / 1
Top-5 / Top-10 concentration72.4% / 88.1%
Institutional holdings change Accumulating +66.4% (+23.37M sh)
Institutional value change Up +64.2%

As of Q2 2026, 31 SEC-registered investment managers reported holding ALT (ALTIMMUNE INC) in their latest 13F filings, with a combined reported value of $177.45M across 58.54M shares. That is +66.4% by share count (+23.37M shares) versus the previous quarter, while reported value moved +64.2%. Ownership is concentrated: the five largest holders account for 72.4% of reported value and the top ten for 88.1%.

Compared with the prior quarter, 3 opened new positions, 23 added to existing stakes, 5 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

ALT is classified in the Health Care sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
BlackRock Inc history Q2 2026 20.39M $61.97M 0.00% Add
Vanguard Group history Q4 2025 9.49M $34.26M 0.00% Add
Marshall Wace history Q2 2026 6.84M $20.80M 0.02% Add
Viking Global Investors history Q2 2026 6.70M $20.37M 0.06% New
Geode Capital Management history Q2 2026 5.01M $15.24M 0.00% Add
Millennium Management history Q2 2026 3.31M $10.06M 0.00% Add
Two Sigma Investments history Q2 2026 2.38M $7.24M 0.01% Reduce
Goldman Sachs Group history Q2 2026 2.21M $6.73M 0.00% Add
Citadel Advisors history Q2 2026 1.74M $5.30M 0.00% Add
Northern Trust Corp history Q2 2026 1.60M $4.86M 0.00% Add
AQR Capital Management history Q2 2026 1.22M $3.71M 0.00% Add
UBS Group AG history Q2 2026 866.38K $2.63M 0.00% Reduce
Morgan Stanley history Q2 2026 758.43K $2.31M 0.00% Reduce
Bank of America Corp history Q2 2026 757.92K $2.30M 0.00% Add
Fidelity Management & Research (FMR) history Q2 2026 748.97K $2.28M 0.00% Add
BNY Mellon history Q2 2026 689.71K $2.10M 0.00% Add
Charles Schwab Investment Management history Q2 2026 624.50K $1.90M 0.00% Add
Point72 Asset Management history Q2 2026 486.88K $1.48M 0.00% Reduce
Wellington Management Group history Q2 2026 420.30K $1.28M 0.00% Add
Invesco Ltd history Q2 2026 332.59K $1.01M 0.00% Add

View all 37 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 5.47M 6.16M 6.14M 6.37M 6.37M 9.70M 12.80M 20.39M
Marshall Wace 478.92K — — 270.33K 1.10M 1.24M 1.60M 2.06M 1.80M 86.13K — — — 65.52K 1.17M 22.10K — 922.78K 4.02M 6.84M
Viking Global Investors — — — — — — — — — — — — — — — — — — — 6.70M
Geode Capital Management 658.85K 633.04K 641.82K 379.83K 476.07K 438.88K 482.36K 969.86K 1.05M 1.19M 1.24M 1.59M 1.67M 1.66M 1.71M 1.93M 2.02M 2.29M 3.11M 5.01M
Millennium Management 198.25K 108.86K 697.16K 824.65K 505.73K 144.74K 1.42M 942.09K 97.23K 174.14K 1.59M 13.36K 144.15K 345.64K 1.41M 194.79K 367.58K 207.38K 3.26M 3.31M
Two Sigma Investments — 576.42K 604.42K 615.62K 977.65K 776.30K 1.04M 986.82K 667.42K — — 576.57K 454.30K 605.30K 1.15M 437.29K 2.00M 1.27M 2.48M 2.38M
Goldman Sachs Group 476.81K 485.42K 728.87K 504.76K 735.74K 767.83K 855.06K 173.17K 122.48K 524.25K 861.41K 1.01M 932.83K 526.17K 390.33K 499.24K 562.26K 1.35M 1.35M 2.21M
Citadel Advisors 1.46M 1.22M 1.28M 1.35M 658.85K 1.43M 2.59M 518.93K 353.50K 528.00K 641.07K 414.02K 949.29K 1.28M 568.70K 1.67M 2.02M 2.34M 982.37K 1.74M
Northern Trust Corp 387.29K 376.48K 360.13K 101.79K 111.39K 139.92K 142.04K 422.44K 450.41K 473.83K 493.97K 527.30K 630.00K 665.92K 636.71K 640.35K 657.02K 715.99K 996.72K 1.60M
AQR Capital Management — — — — — — 21.66K — — — 60.69K 41.38K 23.89K 12.58K — — — 21.15K 85.45K 1.22M
UBS Group AG 101.74K 174.85K 2.01K 508 70.98K 383.07K 162.20K 18.56K 24.26K 58.26K 490.00K 159.60K 282.45K 719.55K 788.16K 886.92K 928.74K 917.55K 904.77K 866.38K
Morgan Stanley 721.80K 1.15M 1.41M 1.37M 591.91K 434.58K 785.52K 1.08M 484.06K 1.04M 2.21M 1.29M 1.30M 921.82K 657.25K 835.41K 1.49M 1.36M 775.26K 758.43K
Bank of America Corp 21.52K 225.57K 22.84K 64.97K 362.20K 629.64K 996.15K 81.67K 60.50K 26.98K 499.87K 279.34K 149.51K 181.89K 280.55K 716.02K 320.44K 383.78K 570.20K 757.92K
Fidelity Management & Research (FMR) — — 508 793 40.71K 2.29K 1.96K 784 67.05K 62.11K 11.11K 7.89K 51.06K 56.74K 20.80K 401.84K 445.14K 564.09K 673.96K 748.97K
BNY Mellon 161.18K 200.20K 197.25K 49.05K 73.10K 53.29K 58.95K 194.12K 178.91K 191.59K 189.65K 243.81K 188.62K 186.84K 189.00K 332.02K 341.99K 354.20K 413.50K 689.71K
Charles Schwab Investment Management 98.25K 100.82K 104.22K 17.27K 17.27K 17.27K 20.40K 133.40K 133.40K 142.71K 142.71K 206.85K 211.63K 211.88K 211.88K 233.51K 204.45K 283.67K 351.68K 624.50K
Point72 Asset Management — — — 609.10K — — 13.99K — — 1.25M 7.60K — — — — — 476.93K — 665.29K 486.88K
Wellington Management Group — — — — — — — — — — 156.91K 154.68K 197.23K 205.23K 224.95K 251.87K 264.80K 257.27K 248.16K 420.30K
Invesco Ltd 12.94K 11.83K 12.32K — — 425.85K — 28.07K 33.03K 746.18K 27.76K 30.74K 31.71K 247.09K 81.13K 106.86K 161.94K 214.82K 227.86K 332.59K
Citigroup Inc 109.06K 1.07M 790.13K 889.47K 272.11K 291.81K 412.55K 15.69K 4.67K 7.58K 742.91K 36.38K 51.81K 124.69K 163.52K 68.18K 9.77K 28.32K 76.33K 293.95K

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