Winton Group’s Altimmune ALT Stock Holding History

Winton 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 Q2	$48.9K	Buy	+16,100	New	+$48.1K	﹤0.01%	1125
2021 Q4	–	Sell	-15,751	Closed	-$178K	–	1006
2021 Q3	$178K	Buy	+15,751	New	+$192K	0.01%	1253
2021 Q1	–	Sell	-17,005	Closed	-$192K	–	1365
2020 Q4	$192K	Sell	17,005 -58,635	-78%	-$691K	0.01%	1197
2020 Q3	$998K	Sell	75,640 -60,863	-45%	-$1.22M	0.03%	828
2020 Q2	$1.46M	Buy	136,503 +42,365	+45%	+$233K	0.04%	807
2020 Q1	$302K	Sell	94,138 -3,741	-4%	-$8.6K	0.01%	1168
2019 Q4	$185K	Buy	97,879 +44,696	+84%	+$82.5K	﹤0.01%	1447
2019 Q3	$104K	Buy	+53,183	New	+$118K	﹤0.01%	1461

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

Winton Group's ALT Position: Q2 2026 in Review

Winton Group opened a new position in Altimmune (ALT) in Q2 2026: 16,100 shares worth $48.9K. The stake represents ﹤0.01% of the portfolio and ranks #1125 among its holdings. This is a return to the name: Winton Group previously reported a position in ALT as recently as Q3 2021.

Winton Group first reported a position in ALT in Q3 2019 and has held it in 8 quarters since. The position peaked at $1.46M in Q2 2020. 211 funds tracked by Wall St. Rank hold ALT as of Q2 2026.

Winton Group held 16,100 shares of Altimmune worth $48.9K as of Q2 2026.
Altimmune was a new Winton Group position in Q2 2026.
Altimmune made up ﹤0.01% of Winton Group's portfolio in Q2 2026, its #1125 holding.
Winton Group first reported a position in Altimmune in Q3 2019 and has held it in 8 quarters since.
Winton Group's Altimmune position peaked at $1.46M in Q2 2020.
211 funds tracked by Wall St. Rank held Altimmune as of Q2 2026.

Based on Winton Group's 13F filing for Q2 2026, filed 7 Aug 2026.