Vanguard Group’s Altimmune ALT Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | $34.3M | Buy |
9,491,159
+3,117,521
| +49% | +$13.6M | ﹤0.01% | 2369 |
|
|
2025
Q3 | $24M | Buy |
6,373,638
+1,206,514
| +23% | +$4.66M | ﹤0.01% | 2537 |
|
|
2025
Q2 | $20M | Buy |
5,167,124
+759,662
| +17% | +$4.11M | ﹤0.01% | 2559 |
|
|
2025
Q1 | $22M | Sell |
4,407,462
-24,150
| -0.5% | -$153K | ﹤0.01% | 2465 |
|
|
2024
Q4 | $32M | Sell |
4,431,612
-552,246
| -11% | -$4.22M | ﹤0.01% | 2355 |
|
|
2024
Q3 | $30.6M | Buy |
4,983,858
+77,244
| +2% | +$523K | ﹤0.01% | 2395 |
|
|
2024
Q2 | $32.6M | Buy |
4,906,614
+1,777,886
| +57% | +$13.1M | ﹤0.01% | 2325 |
|
|
2024
Q1 | $31.9M | Sell |
3,128,728
-443,244
| -12% | -$4.51M | ﹤0.01% | 2368 |
|
|
2023
Q4 | $40.2M | Buy |
3,571,972
+227,677
| +7% | +$951K | ﹤0.01% | 2278 |
|
|
2023
Q3 | $8.7M | Buy |
3,344,295
+38,323
| +1% | +$110K | ﹤0.01% | 2957 |
|
|
2023
Q2 | $11.7M | Buy |
3,305,972
+768,251
| +30% | +$3.45M | ﹤0.01% | 2853 |
|
|
2023
Q1 | $10.7M | Buy |
2,537,721
+5,301
| +0.2% | +$63K | ﹤0.01% | 2901 |
|
|
2022
Q4 | $41.7M | Buy |
2,532,420
+505,378
| +25% | +$5.68M | ﹤0.01% | 2271 |
|
|
2022
Q3 | $25.9M | Buy |
2,027,042
+301,496
| +17% | +$4.45M | ﹤0.01% | 2522 |
|
|
2022
Q2 | $20.2M | Sell |
1,725,546
-91,369
| -5% | -$563K | ﹤0.01% | 2637 |
|
|
2022
Q1 | $11.1M | Buy |
1,816,915
+83,160
| +5% | +$612K | ﹤0.01% | 3096 |
|
|
2021
Q4 | $15.9M | Buy |
1,733,755
+97,398
| +6% | +$1.03M | ﹤0.01% | 2959 |
|
|
2021
Q3 | $18.5M | Buy |
1,636,357
+50,264
| +3% | +$611K | ﹤0.01% | 2906 |
|
|
2021
Q2 | $15.6M | Buy |
1,586,093
+258,883
| +20% | +$3.54M | ﹤0.01% | 2966 |
|
|
2021
Q1 | $18.8M | Buy |
1,327,210
+89,984
| +7% | +$1.45M | ﹤0.01% | 2816 |
|
|
2020
Q4 | $14M | Buy |
1,237,226
+33,923
| +3% | +$400K | ﹤0.01% | 2820 |
|
|
2020
Q3 | $15.9M | Buy |
1,203,303
+597,258
| +99% | +$11.9M | ﹤0.01% | 2569 |
|
|
2020
Q2 | $6.49M | Buy |
606,045
+25,336
| +4% | +$139K | ﹤0.01% | 2978 |
|
|
2020
Q1 | $1.86M | Buy |
580,709
+46,534
| +9% | +$107K | ﹤0.01% | 3329 |
|
|
2019
Q4 | $1.01M | Hold |
534,175
| – | – | ﹤0.01% | 3638 |
|
|
2019
Q3 | $1.04M | Buy |
534,175
+54,540
| +11% | +$121K | ﹤0.01% | 3641 |
|
|
2019
Q2 | $1.14M | Buy |
479,635
+109,977
| +30% | +$294K | ﹤0.01% | 3636 |
|
|
2019
Q1 | $1.07M | Buy |
369,658
+259,289
| +235% | +$773K | ﹤0.01% | 3610 |
|
|
2018
Q4 | $227K | Buy |
+110,369
| New | +$391K | ﹤0.01% | 3881 |
|
|
2018
Q3 | – | Sell |
-9,212
| Closed | -$123K | – | 4169 |
|
|
2018
Q2 | $123K | Buy |
9,212
+18
| +0.2% | +$354 | ﹤0.01% | 4035 |
|
|
2018
Q1 | $320K | Buy |
9,194
+74
| +0.8% | +$3.71K | ﹤0.01% | 3883 |
|
|
2017
Q4 | $544K | Buy |
9,120
+55
| +0.6% | +$3.51K | ﹤0.01% | 3726 |
|
|
2017
Q3 | $631K | Buy |
9,065
+123
| +1% | +$9.16K | ﹤0.01% | 3696 |
|
|
2017
Q2 | $858K | Sell |
8,942
-3,963
| -31% | -$659K | ﹤0.01% | 3605 |
|
|
2017
Q1 | $3.14M | Buy |
12,905
+6,286
| +95% | +$3.36M | ﹤0.01% | 3232 |
|
|
2016
Q4 | $6.45M | Buy |
6,619
+123
| +2% | +$110K | ﹤0.01% | 2947 |
|
|
2016
Q3 | $5.65M | Sell |
6,496
-31
| -0.5% | -$24.3K | ﹤0.01% | 2945 |
|
|
2016
Q2 | $4.78M | Buy |
6,527
+671
| +11% | +$459K | ﹤0.01% | 3007 |
|
|
2016
Q1 | $3.32M | Buy |
5,856
+140
| +2% | +$71.6K | ﹤0.01% | 3168 |
|
|
2015
Q4 | $3.26M | Buy |
5,716
+384
| +7% | +$191K | ﹤0.01% | 3195 |
|
|
2015
Q3 | $2.13M | Buy |
5,332
+14
| +0.3% | +$6.63K | ﹤0.01% | 3351 |
|
|
2015
Q2 | $2.87M | Sell |
5,318
-29
| -0.5% | -$14.7K | ﹤0.01% | 3263 |
|
|
2015
Q1 | $2.62M | Buy |
5,347
+43
| +0.8% | +$21.4K | ﹤0.01% | 3294 |
|
|
2014
Q4 | $2.88M | Buy |
5,304
+668
| +14% | +$343K | ﹤0.01% | 3145 |
|
|
2014
Q3 | $2.48M | Buy |
4,636
+429
| +10% | +$224K | ﹤0.01% | 3173 |
|
|
2014
Q2 | $1.78M | Hold |
4,207
| – | – | ﹤0.01% | 3309 |
|
|
2014
Q1 | $2.31M | Buy |
4,207
+391
| +10% | +$228K | ﹤0.01% | 3159 |
|
|
2013
Q4 | $2.13M | Buy |
3,816
+164
| +4% | +$97.9K | ﹤0.01% | 3163 |
|
|
2013
Q3 | $2.3M | Hold |
3,652
| – | – | ﹤0.01% | 3084 |
|
|
2013
Q2 | $1.74M | Buy |
+3,652
| New | +$1.81M | ﹤0.01% | 3117 |
|
Other funds holding ALT
TCM
Vanguard Group's ALT Position: Q4 2025 in Review
Vanguard Group increased its Altimmune (ALT) stake by 49% in Q4 2025, buying an estimated $13.6M and bringing the position to 9,491,159 shares worth $34.3M. The position accounts for ﹤0.01% of the portfolio, ranked #2369.
Vanguard Group first reported a position in ALT in Q2 2013 and has held it in 50 quarters since. The position peaked at $41.7M in Q4 2022. 181 funds tracked by Wall St. Rank hold ALT as of Q4 2025.
- Vanguard Group held 9,491,159 shares of Altimmune worth $34.3M as of Q4 2025.
- Vanguard Group bought 3,117,521 Altimmune shares in Q4 2025, an estimated $13.6M.
- Altimmune made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #2369 holding.
- Vanguard Group first reported a position in Altimmune in Q2 2013 and has held it in 50 quarters since.
- Vanguard Group's Altimmune position peaked at $41.7M in Q4 2022.
- 181 funds tracked by Wall St. Rank held Altimmune as of Q4 2025.
Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.