IMC Chicago’s Altimmune ALT Stock Holding History

IMC Chicago’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	–	Sell	-10,004	Closed	-$29.9K	–	6318
2026 Q1	$30.8K	Sell	10,004 -163,126	-94%	-$693K	﹤0.01%	5595
2025 Q4	$625K	Buy	173,130 +57,770	+50%	+$252K	﹤0.01%	3334
2025 Q3	$435K	Sell	115,360 -71,458	-38%	-$276K	﹤0.01%	3256
2025 Q2	$723K	Buy	186,818 +103,507	+124%	+$560K	﹤0.01%	2662
2025 Q1	$417K	Sell	83,311 -220,221	-73%	-$1.39M	﹤0.01%	2766
2024 Q4	$2.19M	Sell	303,532 -31,098	-9%	-$238K	﹤0.01%	1804
2024 Q3	$2.05M	Buy	334,630 +51,338	+18%	+$348K	﹤0.01%	1650
2024 Q2	$1.88M	Buy	283,292 +117,685	+71%	+$868K	﹤0.01%	1583
2024 Q1	$1.69M	Buy	165,607 +33,869	+26%	+$344K	﹤0.01%	1465
2023 Q4	$1.48M	Buy	+131,738	New	+$550K	﹤0.01%	1311
2022 Q4	–	Sell	-30,014	Closed	-$337K	–	1249
2022 Q3	$383K	Buy	+30,014	New	+$443K	﹤0.01%	1120

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

IMC Chicago's ALT Position: Q2 2026 in Review

IMC Chicago sold out of Altimmune (ALT) in Q2 2026, closing a stake of 10,004 shares — an estimated $29.9K sold.

IMC Chicago first reported a position in ALT in Q3 2022 and held it in 11 quarters. The position peaked at $2.19M in Q4 2024. 211 funds tracked by Wall St. Rank hold ALT as of Q2 2026.

IMC Chicago reported no remaining Altimmune position as of Q2 2026 after selling out during the quarter.
IMC Chicago sold 10,004 Altimmune shares in Q2 2026, an estimated $29.9K.
IMC Chicago first reported a position in Altimmune in Q3 2022 and held it in 11 quarters.
IMC Chicago's Altimmune position peaked at $2.19M in Q4 2024.
211 funds tracked by Wall St. Rank held Altimmune as of Q2 2026.

Based on IMC Chicago's 13F filing for Q2 2026, filed 6 Aug 2026.