Exchange Boosts Bitcoin ETF Trading Position Limits
Published Date: 5/21/2026
Notice
Summary
Miami International Securities Exchange (MIAX) is raising the limits on how many options traders can hold and exercise for the iShares Bitcoin Trust ETF (IBIT). This change lets traders handle bigger positions starting right away, making trading more flexible and competitive. If you trade IBIT options, get ready for bigger moves and more opportunities to grow your investments!
Analyzed Economic Effects
4 provisions identified: 4 benefits, 0 costs, 0 mixed.
IBIT Options Limits Raised to 1,000,000
If you trade options on the iShares Bitcoin Trust ETF (IBIT), MIAX has increased the same-side position and exercise limits to 1,000,000 contracts (up from the prior 250,000 contract limit). This change applies to IBIT options listed on MIAX and is intended to let traders hold much larger option positions.
May Keep Trading on Exchanges, Not OTC
The Exchange states that raising IBIT position and exercise limits to 1,000,000 contracts may encourage liquidity providers and institutional investors to trade on listed exchanges rather than in less-transparent over-the-counter (OTC) markets. That could increase order flow and price discovery on the Exchange.
New Limits Effective Immediately
The Securities and Exchange Commission waived the normal 30-day operative delay and designated the MIAX filing operative upon filing. MIAX filed the proposed change on May 7, 2026, so the 1,000,000-contract position and exercise limits became effective upon that filing.
Member Reporting Rules Stay the Same
MIAX will keep its existing reporting and surveillance rules when the new IBIT limits apply. Member organizations must continue to report positions and hedging information, and customer reports for aggregate large positions of 200 or more option contracts in a class for the previous day remain required; Market-Makers remain exempt from the reporting requirement though the Exchange may access Market-Maker data.
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