SEI Investments’s Altimmune ALT Stock Holding History

SEI Investments’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
2025 Q3	–	Sell	-18,421	Closed	-$71.3K	–	2816
2025 Q2	$71.3K	Buy	+18,421	New	+$99.7K	﹤0.01%	2726
2024 Q4	–	Sell	-12,977	Closed	-$79.7K	–	2723
2024 Q3	$79.7K	Buy	+12,977	New	+$87.9K	﹤0.01%	2589
2024 Q2	–	Sell	-47,079	Closed	-$479K	–	2655
2024 Q1	$479K	Buy	+47,079	New	+$479K	﹤0.01%	2122
2022 Q4	–	Sell	-20,263	Closed	-$259K	–	2523
2022 Q3	$259K	Buy	+20,263	New	+$299K	﹤0.01%	2371
2018 Q2	–	Sell	-1	Closed	–	–	3606
2018 Q1	$0	Hold	1	–	–	﹤0.01%	3445
2017 Q4	$0	Sell	1 -315	-100%	-$20.1K	﹤0.01%	3325
2017 Q3	$22K	Buy	+316	New	+$23.5K	﹤0.01%	2472
2017 Q2	–	Sell	-83	Closed	-$20K	–	3052
2017 Q1	$20K	Buy	83 +75	+938%	+$40.1K	﹤0.01%	2328
2016 Q4	$7K	Buy	+8	New	+$7.17K	﹤0.01%	2531

Other funds holding ALT

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

TCM

Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Two Sigma Advisers New York $51.4B AUM 31.07% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

SEI Investments's ALT Position: Q3 2025 in Review

SEI Investments sold out of Altimmune (ALT) in Q3 2025, closing a stake of 18,421 shares — an estimated $71.3K sold.

SEI Investments first reported a position in ALT in Q4 2016 and held it in 9 quarters. The position peaked at $479K in Q1 2024. 158 funds tracked by Wall St. Rank hold ALT as of Q3 2025.

SEI Investments reported no remaining Altimmune position as of Q3 2025 after selling out during the quarter.
SEI Investments sold 18,421 Altimmune shares in Q3 2025, an estimated $71.3K.
SEI Investments first reported a position in Altimmune in Q4 2016 and held it in 9 quarters.
SEI Investments's Altimmune position peaked at $479K in Q1 2024.
158 funds tracked by Wall St. Rank held Altimmune as of Q3 2025.

Based on SEI Investments's 13F filing for Q3 2025, filed 13 Nov 2025.