BlackRock’s Altimmune ALT Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$39.4M Buy
12,795,277
+3,090,979
+32% +$13.1M ﹤0.01% 2669
2025
Q4
$35M Buy
9,704,298
+3,331,039
+52% +$14.5M ﹤0.01% 2747
2025
Q3
$24M Buy
6,373,259
+699
+0% +$2.7K ﹤0.01% 2980
2025
Q2
$24.7M Buy
6,372,560
+237,330
+4% +$1.28M ﹤0.01% 2889
2025
Q1
$30.7M Sell
6,135,230
-24,075
-0.4% -$153K ﹤0.01% 2679
2024
Q4
$44.4M Buy
6,159,305
+693,211
+13% +$5.3M ﹤0.01% 2526
2024
Q3
$33.6M Buy
5,466,094
+145,005
+3% +$982K ﹤0.01% 2710
2024
Q2
$35.4M Buy
5,321,089
+1,278,863
+32% +$9.44M ﹤0.01% 2624
2024
Q1
$41.1M Sell
4,042,226
-2,481
-0.1% -$25.2K ﹤0.01% 2555
2023
Q4
$45.5M Buy
4,044,707
+257,791
+7% +$1.08M ﹤0.01% 2534
2023
Q3
$9.85M Buy
3,786,916
+122,642
+3% +$352K ﹤0.01% 3342
2023
Q2
$12.9M Buy
3,664,274
+2,270,219
+163% +$10.2M ﹤0.01% 3294
2023
Q1
$5.88M Buy
1,394,055
+40,022
+3% +$475K ﹤0.01% 3562
2022
Q4
$22.3M Buy
1,354,033
+134,733
+11% +$1.51M ﹤0.01% 2972
2022
Q3
$15.6M Buy
1,219,300
+257,116
+27% +$3.8M ﹤0.01% 3179
2022
Q2
$11.3M Sell
962,184
-1,974,140
-67% -$12.2M ﹤0.01% 3440
2022
Q1
$17.9M Sell
2,936,324
-19,943
-0.7% -$147K ﹤0.01% 3240
2021
Q4
$27.1M Buy
2,956,267
+14,477
+0.5% +$154K ﹤0.01% 3089
2021
Q3
$33.3M Buy
2,941,790
+384,548
+15% +$4.68M ﹤0.01% 2927
2021
Q2
$25.2M Buy
2,557,242
+1,499,055
+142% +$20.5M ﹤0.01% 3157
2021
Q1
$15M Buy
1,058,187
+65,511
+7% +$1.06M ﹤0.01% 3344
2020
Q4
$11.2M Buy
992,676
+495,943
+100% +$5.84M ﹤0.01% 3301
2020
Q3
$6.56M Sell
496,733
-84,547
-15% -$1.69M ﹤0.01% 3457
2020
Q2
$6.22M Buy
581,280
+545,063
+1,505% +$2.99M ﹤0.01% 3437
2020
Q1
$116K Buy
36,217
+2,025
+6% +$4.66K ﹤0.01% 4326
2019
Q4
$64K Sell
34,192
-354
-1% -$654 ﹤0.01% 4505
2019
Q3
$67K Sell
34,546
-1,949
-5% -$4.32K ﹤0.01% 4497
2019
Q2
$87K Buy
36,495
+36,308
+19,416% +$97.1K ﹤0.01% 4490
2019
Q1
$0 Buy
187
+1
+0.5% +$3 ﹤0.01% 4920
2018
Q4
$0 Buy
186
+3
+2% +$11 ﹤0.01% 4946
2018
Q3
$1K Buy
183
+3
+2% +$33 ﹤0.01% 4916
2018
Q2
$3K Sell
180
-980
-84% -$19.3K ﹤0.01% 4859
2018
Q1
$40K Sell
1,160
-68
-6% -$3.41K ﹤0.01% 4465
2017
Q4
$73K Buy
1,228
+48
+4% +$3.07K ﹤0.01% 4380
2017
Q3
$82K Sell
1,180
-42
-3% -$3.13K ﹤0.01% 4398
2017
Q2
$117K Sell
1,222
-7,991
-87% -$1.33M ﹤0.01% 4371
2017
Q1
$2.24M Buy
9,213
+9,202
+83,655% +$4.92M ﹤0.01% 3620
2016
Q4
$11K Hold
11
﹤0.01% 3367
2016
Q3
$10K Buy
11
+4
+57% +$3.14K ﹤0.01% 3395
2016
Q2
$5K Buy
+7
New +$4.79K ﹤0.01% 3508

Other funds holding ALT

BlackRock's ALT Position: Q1 2026 in Review

BlackRock increased its Altimmune (ALT) stake by 32% in Q1 2026, buying an estimated $13.1M and bringing the position to 12,795,277 shares worth $39.4M. The position accounts for ﹤0.01% of the portfolio, ranked #2669.

BlackRock first reported a position in ALT in Q2 2016 and has held it in 40 quarters since. The position peaked at $45.5M in Q4 2023. 173 funds tracked by Wall St. Rank hold ALT as of Q1 2026.

  • BlackRock held 12,795,277 shares of Altimmune worth $39.4M as of Q1 2026.
  • BlackRock bought 3,090,979 Altimmune shares in Q1 2026, an estimated $13.1M.
  • Altimmune made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #2669 holding.
  • BlackRock first reported a position in Altimmune in Q2 2016 and has held it in 40 quarters since.
  • BlackRock's Altimmune position peaked at $45.5M in Q4 2023.
  • 173 funds tracked by Wall St. Rank held Altimmune as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.