JFG
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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 		– Sell
-50,000
Closed -$181K – 1710
2025
Q4 		$181K Hold
50,000
– – ﹤0.01% 1637
2025
Q3 		$189K Buy
+50,000
New +$193K ﹤0.01% 1291
2025
Q1 		– Sell
-25,000
Closed -$180K – 1587
2024
Q4 		$180K Buy
+25,000
New +$191K ﹤0.01% 1397

Other funds holding ALT

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
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
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
N
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.