XTX Topco’s Generation Bio GBIO Stock Holding History

XTX Topco’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	-13,122	Closed	-$74.5K	–	4007
2025 Q4	$74.5K	Buy	13,122 +1,778	+16%	+$10K	﹤0.01%	2722
2025 Q3	$69.4K	Buy	+11,344	New	+$58.8K	﹤0.01%	2100
2025 Q2	–	Sell	-5,244	Closed	-$21.2K	–	2640
2025 Q1	$21.2K	Buy	+5,244	New	+$36.8K	﹤0.01%	2129
2024 Q4	–	Sell	-1,792	Closed	-$44.3K	–	2503
2024 Q3	$44.3K	Sell	1,792 -11,480	-86%	-$304K	﹤0.01%	1714
2024 Q2	$374K	Sell	13,272 -3,349	-20%	-$109K	0.03%	825
2024 Q1	$676K	Buy	16,621 +1,981	+14%	+$46.6K	0.09%	316
2023 Q4	$242K	Buy	+14,640	New	+$255K	0.05%	806
2023 Q3	–	Sell	-1,684	Closed	-$92.6K	–	1710
2023 Q2	$92.6K	Buy	+1,684	New	+$77.3K	0.02%	1173

Other funds holding GBIO

ACM

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

XTX Topco's GBIO Position: Q1 2026 in Review

XTX Topco sold out of Generation Bio (GBIO) in Q1 2026, closing a stake of 13,122 shares — an estimated $74.5K sold.

XTX Topco first reported a position in GBIO in Q2 2023 and held it in 8 quarters. The position peaked at $676K in Q1 2024. 2 funds tracked by Wall St. Rank hold GBIO as of Q1 2026.

XTX Topco reported no remaining Generation Bio position as of Q1 2026 after selling out during the quarter.
XTX Topco sold 13,122 Generation Bio shares in Q1 2026, an estimated $74.5K.
XTX Topco first reported a position in Generation Bio in Q2 2023 and held it in 8 quarters.
XTX Topco's Generation Bio position peaked at $676K in Q1 2024.
2 funds tracked by Wall St. Rank held Generation Bio as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.