Jeff Yass’s Tradr 2X Long MDB Daily ETF MDBX Stock Holding History

Jeff Yass’s Portfolio MDBX Stock Details MDBX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-6,372	Closed	-$453K	–	14512
2025 Q4	$453K	Buy	+6,372	New	+$358K	﹤0.01%	9023

Other funds holding MDBX

Optiver Holding Amsterdam, Netherlands $371B AUM 64.6% 1-Year Est. Return

Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return

Group One Trading Chicago, Illinois $71.1B AUM 128.96% 1-Year Est. Return

Citigroup New York $303B AUM 53.02% 1-Year Est. Return

Jeff Yass's MDBX Position: Q1 2026 in Review

Jeff Yass sold out of Tradr 2X Long MDB Daily ETF (MDBX) in Q1 2026, closing a stake of 6,372 shares — an estimated $453K sold.

Jeff Yass first reported a position in MDBX in Q4 2025 and held it in 1 quarter. The position peaked at $453K in Q4 2025. 4 funds tracked by Wall St. Rank hold MDBX as of Q1 2026.

Jeff Yass reported no remaining Tradr 2X Long MDB Daily ETF position as of Q1 2026 after selling out during the quarter.
Jeff Yass sold 6,372 Tradr 2X Long MDB Daily ETF shares in Q1 2026, an estimated $453K.
Jeff Yass first reported a position in Tradr 2X Long MDB Daily ETF in Q4 2025 and held it in 1 quarter.
Jeff Yass's Tradr 2X Long MDB Daily ETF position peaked at $453K in Q4 2025.
4 funds tracked by Wall St. Rank held Tradr 2X Long MDB Daily ETF as of Q1 2026.

Based on Susquehanna International Group's 13F filing for Q1 2026, filed 15 May 2026.