Optiver Holding’s Generation Bio GBIO Stock Holding History

Optiver Holding’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	-2	Closed	-$11	–	2476
2025 Q4	$11	Sell	2 -3	-60%	-$17	﹤0.01%	2426
2025 Q3	$31	Buy	+5	New	+$26	﹤0.01%	2634

Other funds holding GBIO

ACM

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

Optiver Holding's GBIO Position: Q1 2026 in Review

Optiver Holding sold out of Generation Bio (GBIO) in Q1 2026, closing a stake of 2 shares — an estimated $11 sold.

Optiver Holding first reported a position in GBIO in Q3 2025 and held it in 2 quarters. The position peaked at $31 in Q3 2025. 2 funds tracked by Wall St. Rank hold GBIO as of Q1 2026.

Optiver Holding reported no remaining Generation Bio position as of Q1 2026 after selling out during the quarter.
Optiver Holding sold 2 Generation Bio shares in Q1 2026, an estimated $11.
Optiver Holding first reported a position in Generation Bio in Q3 2025 and held it in 2 quarters.
Optiver Holding's Generation Bio position peaked at $31 in Q3 2025.
2 funds tracked by Wall St. Rank held Generation Bio as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.