Bitcoin's rally from roughly $62,000 to near $80,000 ran through one of the year's largest options expiries on Friday, clearing about 81,700 contracts worth $6.4 billion on Deribit at 08:00 UTC.Much of that positioning was built before Bitcoin surged more than 20% in a week.Max Pain at $68,000 Sat Roughly $12,000 Below SettlementBy Thursday, the rally had pushed Bitcoin directly into large concentrations of bets at $75,000 and $80,000, while the expiry's max pain level — where the largest number of options would expire worthless — sat much lower, around $68,000-$70,000.Max pain is a reference point for where the aggregate book had the least value at settlement, not a price magnet. A gap of roughly $12,000 between max pain and spot means the distribution of open interest was badly positioned for what actually happened. Calls at $75,000 and $80,000 that were far out of the money when written finished in or near the money.That gap is a measure of how unanticipated the move was. Positioning built during a six-week range between $61,500 and $66,900, with implied volatility at 2026 lows and BVIV around 35.59%, priced a narrow distribution of outcomes. The break through $66,600, $70,000, $75,385 and $81,265 in a single week fell well outside it.Post-Expiry Open Interest Is the More Useful SignalFriday's settlement removes those expiring positions from the market. That makes the next distribution of open interest more informative than the one traders were watching before the rally — it shows where bets are being placed after the move toward $80,000 rather than before it.The pre-expiry book was a record of expectations formed in a range that no longer exists. What rebuilds now reflects a market pricing Bitcoin from $80,000 with the 50-week moving average at $81,081 directly overhead and Glassnode data showing nearly 8% of supply concentrated between $80,000 and $82,000.Early indications point toward defined-risk upside structures rather than outright directional bets. Deribit's Jean-David Pequignot said call spreads "remain an appealing mechanism for upside exposure into September," noting that puts remain relatively expensive, which makes calls the cheaper wing of the skew to buy. 10x Research founder Markus Thielen has favored selling $90,000 September calls against spot, or a September 85/95 call spread.Implied Volatility Rose Through the Rally Rather Than FallingThe rebuilt book faces materially different pricing than the expired one. BVIV climbed to 47% from 36% a week earlier — an unusual move higher during a price rally, since implied volatility typically spikes on selloffs.The rise reflects a widened distribution of outcomes rather than fear. While Bitcoin sat range-bound, options markets could price a narrow band of likely results. Once the range broke, the plausible range of future prices expanded in both directions, and sellers require more premium to underwrite that.For anyone rebuilding positions after Friday's expiry, options are simply more expensive than they were when the expired book was written. Structuring as spreads rather than outright purchases is how traders reduce that cost.The Backdrop Into SeptemberThe expiry clears with a dense catalyst calendar immediately ahead. Fed Chair Kevin Warsh delivered his first Jackson Hole keynote Friday, three weeks before the September 15-16 rate decision, with shorter-dated Treasuries having fallen overnight as traders added to rate-increase bets.September has historically been a mildly bearish month for Bitcoin, averaging a negative 3% return since 2013 according to Coinglass data. That seasonality, combined with expensive options and the supply wall at $80,000-$82,000, is why both Deribit and 10x Research have pointed toward capped-risk structures rather than outright long exposure for the next leg.
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