In a notable shift observed in 2025, the Bitcoin (BTC) market, valued at $88,422.77, has become significantly more stable as institutional investors increasingly turn to derivatives linked to the leading cryptocurrency. This trend aims to generate additional revenue from their idle Bitcoin holdings.
The market’s tranquility is underscored by a continuous decline in Bitcoin’s annualized 30-day implied volatility, as tracked by the Volmex BVIV and Deribit DVOL indexes. Both indices commenced the year around 70% but tapered off to nearly 45% by year’s end, reaching a low of 35% in September. This steady downward trajectory is attributed to institutions opting to sell call options above their spot market assets to reap yield.
Imran Lakha, founder of Options Insights, noted on social media platform X that the influx of institutional capital has led to a structural decrease in Bitcoin’s implied volatility. Institutions have leveraged this environment by harvesting yield through the strategic selling of upside calls.
Options contracts provide buyers with the right, but not the obligation, to buy or sell an asset like Bitcoin at a predetermined price before a specific date. Call options allow investors to buy the asset and are typically seen as bullish, while put options offer the right to sell and serve to hedge against declines.
Lakha compared selling options to vending lottery tickets, where the seller collects an upfront premium. Typically, a significant portion of these options expires worthless, benefitting sellers over time.
Large institutions, including those holding spot Bitcoin exchange-traded funds (ETFs), have capitalized on this strategy by selling out-of-the-money calls. These higher-strike bullish bets require Bitcoin to experience notable price appreciation to be profitable, allowing these institutions to pocket the premiums during less volatile periods.
As a result of the extensive call selling by institutions, there has been a consistent influx of options available in the market, leading to reduced implied volatility. Jake Ostrovskis, head of the over-the-counter desk at Wintermute, indicated in a note to CoinDesk that over 12.5% of all mined Bitcoin is now held in ETFs and treasuries, which do not provide native yield. Consequently, call overwriting has emerged as a predominant strategy throughout 2025, exerting downward pressure on implied volatility from the supply side.
The institutional embrace of Bitcoin options has markedly transformed trading practices, aligning BTC closer to the behavior of traditional financial markets. Throughout much of 2025, it has been observed that Bitcoin puts, which are bearish options used to hedge against downturns, have consistently traded at a premium compared to calls across both short- and long-term expiries.
This reversal from previous years, where longer-dated options tended to favor bullish call skew, does not necessarily indicate a bearish sentiment. Rather, it reflects an influx of sophisticated market participants who prefer to hedge their bullish positions effectively. Lakha pointed out that this shift towards put skew—driven by institutional investors’ demand for hedging—signals a significant transformation in market dynamics, indicating that genuine institutional money remains optimistic yet protected against potential downside risks.
