Jefferies Financial Group’s Altimmune ALT Stock Holding History

Jefferies Financial Group’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 Q1	$339K	Sell	110,000 -47,800	-30%	-$203K	﹤0.01%	1345
2025 Q4	$570K	Buy	157,800 +107,800	+216%	+$470K	﹤0.01%	1295
2025 Q3	$189K	Buy	50,000 +15,000	+43%	+$57.9K	﹤0.01%	1290
2025 Q2	$135K	Buy	35,000 +10,000	+40%	+$54.1K	﹤0.01%	1160
2025 Q1	$125K	Hold	25,000	–	–	﹤0.01%	1447
2024 Q4	$180K	Buy	25,000 +5,000	+25%	+$38.2K	﹤0.01%	1396
2024 Q3	$123K	Hold	20,000	–	–	﹤0.01%	1268
2024 Q2	$133K	Buy	+20,000	New	+$148K	﹤0.01%	1268
2024 Q1	–	Sell	-216,000	Closed	-$2.43M	–	1578
2023 Q4	$2.43M	Buy	+216,000	New	+$902K	0.02%	635

Other funds holding ALT

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

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

Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return

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

Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Jefferies Financial Group's ALT Position: Q1 2026 in Review

Jefferies Financial Group reduced its Altimmune (ALT) stake by 30% in Q1 2026, selling an estimated $203K and leaving 110,000 shares worth $339K. The position accounts for ﹤0.01% of the portfolio, ranked #1345.

Jefferies Financial Group first reported a position in ALT in Q4 2023 and has held it in 9 quarters since. The position peaked at $2.43M in Q4 2023. 173 funds tracked by Wall St. Rank hold ALT as of Q1 2026.

Jefferies Financial Group held 110,000 shares of Altimmune worth $339K as of Q1 2026.
Jefferies Financial Group sold 47,800 Altimmune shares in Q1 2026, an estimated $203K.
Altimmune made up ﹤0.01% of Jefferies Financial Group's portfolio in Q1 2026, its #1345 holding.
Jefferies Financial Group first reported a position in Altimmune in Q4 2023 and has held it in 9 quarters since.
Jefferies Financial Group's Altimmune position peaked at $2.43M in Q4 2023.
173 funds tracked by Wall St. Rank held Altimmune as of Q1 2026.

Based on Jefferies Financial Group's 13F filing for Q1 2026, filed 8 May 2026.