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

Optiver Holding’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	$450K	Buy	23,185 +14,251	+160%	+$621K	﹤0.01%	665
2025 Q4	$636K	Buy	+8,934	New	+$502K	﹤0.01%	547

Other funds holding MDBX

Simplex Trading Chicago, Illinois $149B AUM 62.07% 1-Year Est. Return

Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return

Citigroup New York $235B AUM 32.99% 1-Year Est. Return

Optiver Holding's MDBX Position: Q1 2026 in Review

Optiver Holding increased its Tradr 2X Long MDB Daily ETF (MDBX) stake by 160% in Q1 2026, buying an estimated $621K and bringing the position to 23,185 shares worth $450K. The position accounts for ﹤0.01% of the portfolio, ranked #665.

Optiver Holding first reported a position in MDBX in Q4 2025 and has held it in 2 quarters since. The position peaked at $636K in Q4 2025. 4 funds tracked by Wall St. Rank hold MDBX as of Q1 2026.

Optiver Holding held 23,185 shares of Tradr 2X Long MDB Daily ETF worth $450K as of Q1 2026.
Optiver Holding bought 14,251 Tradr 2X Long MDB Daily ETF shares in Q1 2026, an estimated $621K.
Tradr 2X Long MDB Daily ETF made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #665 holding.
Optiver Holding first reported a position in Tradr 2X Long MDB Daily ETF in Q4 2025 and has held it in 2 quarters since.
Optiver Holding's Tradr 2X Long MDB Daily ETF position peaked at $636K in Q4 2025.
4 funds tracked by Wall St. Rank held Tradr 2X Long MDB Daily ETF as of Q1 2026.

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