Bitcoin options open interest extends dominance over futures, damping BTC volatility

Market Overview - Bitcoin (BTC) has been trading in a narrow range of $80,000 to $95,000 since November, with options becoming the largest segment of the derivatives market, indicating a maturing market for the cryptocurrency [1] - Aggregate bitcoin options open interest is at $65 billion, surpassing futures open interest at $60 billion, a trend that has been consistent since July 2025 [1] Options Market Dynamics - Options are favored by institutional investors for hedging and volatility strategies, contributing to more stable market conditions, marking a shift from leverage-driven speculation to risk management [2] - In October, bitcoin reached a record high of $126,000, with options open interest peaking at nearly $120 billion before declining due to contract expiries, while bitcoin's price fell by 35% [3] Dominance of IBIT - The bitcoin options market is increasingly dominated by BlackRock's iShares Bitcoin Trust ETF (IBIT), which accounts for approximately $33 billion in options open interest, representing 52% of the total market [4] - IBIT options began trading in November 2024, and Nasdaq ISE has requested to increase position limits from 250,000 contracts to 1 million, indicating strong institutional demand [4] Competitive Landscape - Following the debut of IBIT options, Deribit has seen its market share decline, with current options open interest at around $26 billion, down from approximately $43 billion before year-end expiries, reducing its dominance from over 90% five years ago to below 39% [5] - Bullish Exchange has surpassed $3 billion in notional bitcoin options open interest within a few months of trading, now ranking second in bitcoin options trading, having overtaken platforms like OKX, Binance, and CME [6]