Driehaus Capital Management’s Allison Transmission ALSN Stock Holding History

Driehaus Capital Management’s Portfolio ALSN Stock Details ALSN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$13.9M	Sell	123,193 -95,933	-44%	-$11.6M	0.08%	258
2026 Q1	$25.7M	Buy	219,126 +76,007	+53%	+$8.64M	0.19%	168
2025 Q4	$14M	Buy	+143,119	New	+$12.5M	0.1%	250
2025 Q2	–	Sell	-216,502	Closed	-$20.7M	–	421
2025 Q1	$20.7M	Sell	216,502 -288,819	-57%	-$30.6M	0.2%	151
2024 Q4	$54.6M	Buy	505,321 +24,811	+5%	+$2.71M	0.45%	78
2024 Q3	$46.2M	Buy	+480,510	New	+$41.2M	0.4%	85
2020 Q1	–	Sell	-6,170	Closed	-$298K	–	401
2019 Q4	$298K	Buy	+6,170	New	+$287K	0.01%	456
2014 Q3	–	Sell	-16,687	Closed	-$519K	–	527
2014 Q2	$519K	Sell	16,687 -7,652	-31%	-$231K	0.02%	501
2014 Q1	$729K	Buy	+24,339	New	+$705K	0.02%	426

Other funds holding ALSN

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Driehaus Capital Management's ALSN Position: Q2 2026 in Review

Driehaus Capital Management reduced its Allison Transmission (ALSN) stake by 44% in Q2 2026, selling an estimated $11.6M and leaving 123,193 shares worth $13.9M. The position accounts for 0.08% of the portfolio, ranked #258.

Driehaus Capital Management first reported a position in ALSN in Q1 2014 and has held it in 9 quarters since. The position peaked at $54.6M in Q4 2024. 571 funds tracked by Wall St. Rank hold ALSN as of Q2 2026.

Driehaus Capital Management held 123,193 shares of Allison Transmission worth $13.9M as of Q2 2026.
Driehaus Capital Management sold 95,933 Allison Transmission shares in Q2 2026, an estimated $11.6M.
Allison Transmission made up 0.08% of Driehaus Capital Management's portfolio in Q2 2026, its #258 holding.
Driehaus Capital Management first reported a position in Allison Transmission in Q1 2014 and has held it in 9 quarters since.
Driehaus Capital Management's Allison Transmission position peaked at $54.6M in Q4 2024.
571 funds tracked by Wall St. Rank held Allison Transmission as of Q2 2026.

Based on Driehaus Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.