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Bitcoin-Related Convertible Bond ETF Comes to Market

Convertible debt from Michael Saylor's Strategy comprises the majority of the REX Bitcoin Corporate Treasury Convertible Bond ETF holdings.

By Helene Braun, James Van Straten|Edited by Stephen Alpher
Updated Mar 14, 2025, 3:21 p.m. Published Mar 14, 2025, 3:18 p.m.
REX Shares has launched a first-of-its-kind convertible-bonds exchange-traded fund (ETF). (Unsplash)

What to know:

  • REX Shares launched the first ETF focused on convertible bonds tied to bitcoin-focused corporate treasury strategies.
  • The convertible paper of Michael Saylor's Strategy makes up the majority of the fund holdings.
  • Trading on Nasdaq with a 0.85% expense ratio, the fund came to market on Friday with $25 million in AUM.

REX Shares has launched a first-of-its-kind convertible-bonds exchange-traded fund (ETF), allowing investors exposure to the convertible debt issued by corporates to add bitcoin to their balance sheet.

Called the REX Bitcoin Corporate Treasury Convertible Bond ETF (BMAX), the fund is necessarily mostly made up of convertible paper issued by Michael Saylor's Strategy (MSTR), by far the largest issuer of such debt. Other top 10 holdings include the convertible notes of bitcoin miners Marathon Digital (MARA) and Riot Platforms (RIOT).

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“Until now, these bonds have been difficult for individual investors to reach,” said Greg King, CEO of Rex Financial, in a statement. “BMAX removes those barriers, making it easier to invest in the strategy pioneered by Michael Saylor — leveraging corporate debt to acquire Bitcoin as a treasury asset.”

The fund officially launched today, and trades on the Nasdaq. It has a gross expense ratio of 0.85% and was seeded with $25 million in assets.

Shares of the ETF are higher in early trading as bitcoin has rallied from an overnight low of around $80,000 to above $84,000.

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