Acadian Asset Management’s Generation Bio GBIO Stock Holding History

Acadian Asset Management’s Portfolio GBIO Stock Details GBIO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-121,029	Closed	-$686K	–	2095
2025 Q4	$686K	Sell	121,029 -6,477	-5%	-$36.6K	﹤0.01%	1219
2025 Q3	$779K	Buy	127,506 +4,159	+3%	+$21.5K	﹤0.01%	1113
2025 Q2	$393K	Buy	123,347 +7,433	+6%	+$28.6K	﹤0.01%	1185
2025 Q1	$468K	Buy	115,914 +40,785	+54%	+$287K	﹤0.01%	1096
2024 Q4	$795K	Buy	75,129 +14,548	+24%	+$259K	﹤0.01%	970
2024 Q3	$1.5M	Buy	60,581 +1,124	+2%	+$29.7K	﹤0.01%	825
2024 Q2	$1.68M	Buy	59,457 +11,473	+24%	+$373K	0.01%	828
2024 Q1	$1.95M	Buy	47,984 +25,547	+114%	+$602K	0.01%	662
2023 Q4	$368K	Buy	+22,437	New	+$391K	﹤0.01%	1102
2022 Q4	–	Sell	-1,831	Closed	-$97K	–	1830
2022 Q3	$97K	Buy	1,831 +1,172	+178%	+$73.3K	﹤0.01%	1372
2022 Q2	$43K	Buy	+659	New	+$43.1K	﹤0.01%	1518

Other funds holding GBIO

ACM

Accent Capital Management Centerville, Ohio $231M AUM 33.86% 1-Year Est. Return

Acadian Asset Management's GBIO Position: Q1 2026 in Review

Acadian Asset Management sold out of Generation Bio (GBIO) in Q1 2026, closing a stake of 121,029 shares — an estimated $686K sold.

Acadian Asset Management first reported a position in GBIO in Q2 2022 and held it in 11 quarters. The position peaked at $1.95M in Q1 2024. 2 funds tracked by Wall St. Rank hold GBIO as of Q1 2026.

Acadian Asset Management reported no remaining Generation Bio position as of Q1 2026 after selling out during the quarter.
Acadian Asset Management sold 121,029 Generation Bio shares in Q1 2026, an estimated $686K.
Acadian Asset Management first reported a position in Generation Bio in Q2 2022 and held it in 11 quarters.
Acadian Asset Management's Generation Bio position peaked at $1.95M in Q1 2024.
2 funds tracked by Wall St. Rank held Generation Bio as of Q1 2026.

Based on Acadian Asset Management's 13F filing for Q1 2026, filed 13 May 2026.