Vanguard Portfolio Management
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Vanguard Portfolio Management’s Altimmune ALT Stock Holding History

Vanguard Portfolio Management’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 		$22.3M Buy
7,330,265
+1,948,263
+36% +$5.82M ﹤0.01% 1950
2026
Q1 		$16.6M Buy
+5,382,002
New +$22.9M ﹤0.01% 1963

Other funds holding ALT

BlackRock
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
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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Viking Global Investors
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
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return

Vanguard Portfolio Management's ALT Position: Q2 2026 in Review

Vanguard Portfolio Management increased its Altimmune (ALT) stake by 36% in Q2 2026, buying an estimated $5.82M and bringing the position to 7,330,265 shares worth $22.3M. The position accounts for ﹤0.01% of the portfolio, ranked #1950.

Vanguard Portfolio Management first reported a position in ALT in Q1 2026 and has held it in 2 quarters since. 207 funds tracked by Wall St. Rank hold ALT as of Q2 2026.

  • Vanguard Portfolio Management held 7,330,265 shares of Altimmune worth $22.3M as of Q2 2026.
  • Vanguard Portfolio Management bought 1,948,263 Altimmune shares in Q2 2026, an estimated $5.82M.
  • Altimmune made up ﹤0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #1950 holding.
  • Vanguard Portfolio Management first reported a position in Altimmune in Q1 2026 and has held it in 2 quarters since.
  • 207 funds tracked by Wall St. Rank held Altimmune as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.