Jane Street’s REX Bitcoin Corporate Treasury Convertible Bond ETF BMAX Stock Holding History

Jane Street’s Portfolio BMAX Stock Details BMAX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-39,021	Closed	-$893K	–	13608
2026 Q1	$893K	Buy	39,021 +5,621	+17%	+$132K	﹤0.01%	6772
2025 Q4	$770K	Buy	33,400 +15,101	+83%	+$384K	﹤0.01%	6715
2025 Q3	$520K	Sell	18,299 -22,985	-56%	-$670K	﹤0.01%	7784
2025 Q2	$1.23M	Sell	41,284 -689,524	-94%	-$19.7M	﹤0.01%	5244
2025 Q1	$18.5M	Buy	+730,808	New	+$19.3M	﹤0.01%	1374

Jane Street's BMAX Position: Q2 2026 in Review

Jane Street sold out of REX Bitcoin Corporate Treasury Convertible Bond ETF (BMAX) in Q2 2026, closing a stake of 39,021 shares — an estimated $893K sold.

Jane Street first reported a position in BMAX in Q1 2025 and held it in 5 quarters. The position peaked at $18.5M in Q1 2025. 0 funds tracked by Wall St. Rank hold BMAX as of Q2 2026.

Jane Street reported no remaining REX Bitcoin Corporate Treasury Convertible Bond ETF position as of Q2 2026 after selling out during the quarter.
Jane Street sold 39,021 REX Bitcoin Corporate Treasury Convertible Bond ETF shares in Q2 2026, an estimated $893K.
Jane Street first reported a position in REX Bitcoin Corporate Treasury Convertible Bond ETF in Q1 2025 and held it in 5 quarters.
Jane Street's REX Bitcoin Corporate Treasury Convertible Bond ETF position peaked at $18.5M in Q1 2025.
0 funds tracked by Wall St. Rank held REX Bitcoin Corporate Treasury Convertible Bond ETF as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.