Miami Exchange Boosts Bitcoin ETF Trading Power Immediately
Published Date: 8/25/2025
Notice
Summary
MIAX is boosting the position and exercise limits for three popular Bitcoin ETFs: Grayscale Bitcoin Trust, Grayscale Bitcoin Mini Trust, and Bitwise Bitcoin ETF. This change lets traders hold and exercise more contracts, making trading more flexible and potentially more profitable. The new rules took effect right after filing on August 14, 2025, so the market can jump on these bigger limits now!
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
Bitcoin ETF Options Limits Raised
If you trade options on Grayscale Bitcoin Trust (GBTC), Grayscale Bitcoin Mini Trust (BTC), or the Bitwise Bitcoin ETF (BITB), the position and exercise limits were increased from 25,000 contracts to 250,000 contracts. This change became operative upon filing on August 14, 2025 and subjects those options to Exchange Rule 307(d) criteria (including the 100,000,000-share six-month trading-volume threshold to qualify for a 250,000-contract limit) and six-month reviews of the limits.
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