Woodline Partners’s Altimmune ALT Stock Holding History

Woodline Partners’s Portfolio ALT Stock Details ALT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$10.3M	Buy	+3,400,312	New	+$10.2M	0.03%	528
2025 Q3	–	Sell	-142,863	Closed	-$553K	–	877
2025 Q2	$553K	Buy	+142,863	New	+$773K	﹤0.01%	848
2024 Q2	–	Sell	-214,245	Closed	-$2.18M	–	556
2024 Q1	$2.18M	Buy	+214,245	New	+$2.18M	0.02%	423
2023 Q1	–	Sell	-1,304,024	Closed	-$21.5M	–	627
2022 Q4	$21.5M	Buy	1,304,024 +285,933	+28%	+$3.21M	0.29%	95
2022 Q3	$13M	Buy	1,018,091 +467,406	+85%	+$6.9M	0.18%	162
2022 Q2	$6.44M	Sell	550,685 -295,933	-35%	-$1.82M	0.1%	222
2022 Q1	$5.16M	Buy	846,618 +225,940	+36%	+$1.66M	0.08%	240
2021 Q4	$5.68M	Buy	620,678 +271,855	+78%	+$2.89M	0.08%	269
2021 Q3	$3.94M	Buy	+348,823	New	+$4.24M	0.06%	294

Other funds holding ALT

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

DTC

Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

TCM

TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Viking Global Investors Stamford, Connecticut $35.1B AUM 21.36% 1-Year Est. Return

RCM

RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Woodline Partners's ALT Position: Q2 2026 in Review

Woodline Partners opened a new position in Altimmune (ALT) in Q2 2026: 3,400,312 shares worth $10.3M. The stake represents 0.03% of the portfolio and ranks #528 among its holdings. This is a return to the name: Woodline Partners previously reported a position in ALT as recently as Q2 2025.

Woodline Partners first reported a position in ALT in Q3 2021 and has held it in 9 quarters since. The position peaked at $21.5M in Q4 2022. 210 funds tracked by Wall St. Rank hold ALT as of Q2 2026.

Woodline Partners held 3,400,312 shares of Altimmune worth $10.3M as of Q2 2026.
Altimmune was a new Woodline Partners position in Q2 2026.
Altimmune made up 0.03% of Woodline Partners's portfolio in Q2 2026, its #528 holding.
Woodline Partners first reported a position in Altimmune in Q3 2021 and has held it in 9 quarters since.
Woodline Partners's Altimmune position peaked at $21.5M in Q4 2022.
210 funds tracked by Wall St. Rank held Altimmune as of Q2 2026.

Based on Woodline Partners's 13F filing for Q2 2026, filed 14 Aug 2026.