Bitcoin options data reveals heavy hedging at $60k and $78k+, leaving low $70k zone exposed

Bitcoin‘s end-of-September options expiry features 130,670 BTC in open interest, significantly higher than the 79,003 BTC recorded for August. While this headline gap suggests traders are positioning ahead of the Federal Reserve’s Sept. 16 decision, DWF Labs market insights lead Martin Lee notes that most of this volume is unrelated to the Fed.

September and December are the two quarterly expiries for Bitcoin options, collectively holding 59.3% of all open interest as traders frequently roll positions into these periods. The market has quietly repriced its risk, with the September book acting largely as a red herring regarding the Fed.

The September book is mostly a red herring

Lee’s analysis shows that the top five strikes account for 31% of September’s open interest, matching the concentration seen in both December and March. If September represented an aggressive, concentrated bet on the Fed, the structure would likely differ from routine quarterly positioning elsewhere on the calendar.

Metric	September expiry	August expiry	What it means
Open interest	130,670 BTC	79,003 BTC	September is much larger on the headline number
Relative size	1.65x August	Baseline	Big, but not quite “double”
Top five strike concentration	31%	N/A	Same as December and March, suggesting routine quarterly structure
Quarterly expiries’ share of total BTC OI	59.3%	N/A	September/December naturally absorb rolling positions
Fed-trade signal?	Weak	N/A	Size alone does not prove Fed positioning

Trading volume during the week of July’s Fed meeting stood at 14,983 contracts, a figure Lee described as mid-range for the summer. Volume tripled to 64,749 contracts around Aug. 19, coinciding with the US Treasury’s announcement to at least double its long-end liquidity-support buybacks, raising the maximum operation size from $2 billion to at least $4 billion starting Sept. 9.

This announcement was linked to easing long-end yield stress and a revived dollar-debasement trade that boosted both Bitcoin and gold. Bitcoin rose from $64,100 to close near $77,000 that week, clearing out roughly $4 billion in short positions. Stanley Druckenmiller has criticized the expanded buybacks as damaging to Treasury credibility, a tension underlying the rally driving Bitcoin’s options market.

A year of cheap calls just ended

Puts had been the richer side of Bitcoin’s options market for nearly a year. The December expiry showed a negative monthly median every month from December 2025 through August 2026, with only three positive daily readings across 224 sessions.

End-September calls now trade 0.97 volatility points richer than puts, a swing of nearly six volatility points toward upside in under three weeks, up from being 4.96 points cheaper on Aug. 3. US-traded spot Bitcoin ETFs attracted roughly $1.92 billion last week, their strongest weekly pace of 2026, providing a clear demand-side reason for traders to chase that call bid.

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September’s largest call sits at $70,000 with 11,308 contracts. While this appears bullish, Bitcoin already trades 9.8% above that level, placing the position deep in the money. Lee stated these contracts are likely legacy exposure from when Bitcoin traded in the low $60,000s.

Some 27% of September’s open interest sits more than 30% away from spot, compared to 13% for the August expiry. A large share of the book consists of cheap, far-dated wings with little chance of being exercised. The band most likely in live play sits between $78,000 and $82,000, where three separate lines hold around 14,000 contracts, with $100,000 acting as a round-number magnet above.

Zone	Positioning detail	Interpretation
$70,000 call	11,308 contracts	Large, but likely legacy exposure because BTC is already 9.8% above it
$78,000–$82,000	~14,000 contracts across three lines	Most relevant near-spot upside zone
$100,000	Large round-number call area	Psychological magnet, not a price target
More than 30% from spot	27% of September OI	Large share of book is cheap wing exposure
August comparison	13% more than 30% from spot	September contains far more out-of-play optionality

Which side of the Bitcoin book gets tested

Options positioning is typically analyzed by identifying the largest wall of calls or puts above or below spot. Lee’s data suggests the key question is: “Where does the book offer the least protection?”

September’s book runs 1.8-to-1 in favor of calls, with live upside positioning clustering between $78,000 and $100,000. Heavier downside protection is concentrated at $60,000 and below, serving as catastrophe insurance against a severe, disorderly decline. Between roughly $60,000 and $75,000, the book thins out considerably.

“A sharp move down into the low 70s would land in the thinnest part of the book.”

This is also the direction the market stopped paying a premium to protect against just last week.

Price zone	Market position	Why it matters
$82,000–$100,000	Call-heavy upside zone	Bullish continuation validates the new call premium
$78,000–$82,000	Active near-spot upside cluster	First area where live upside positioning matters
$68,000–$75,000	Thin-protection zone	The book’s weak point; sharp drop here wrong-foots positioning
$60,000 and below	Heavier downside insurance	Catastrophe protection, not ordinary pullback protection
Overall book	1.8-to-1 calls	Market is tilted toward upside rather than near-term downside hedging

The bull case assumes the debasement trade extends, with long yields easing further, the dollar remaining weak, and ETF demand continuing at last week’s pace. In this scenario, Bitcoin pushes toward the $82,000 to $100,000 range, validating the call-heavy skew with real spot demand. The $100,000 level becomes the market’s next psychological magnet.

The bear case involves long yields rebounding, Fed rhetoric turning hawkish ahead of the Sept. 16 decision, or the Treasury trade losing momentum, sending Bitcoin down into the $68,000 to $75,000 range. This is precisely the zone Lee’s data identifies as the book’s weak point, sitting below the call-heavy upside positioning and above where larger downside hedges cluster. The most disruptive outcome for current positioning would be an ordinary, sharp drop landing exactly where the September book offers the least protection.

Bitcoin’s options market spent a year paying up for protection against this kind of move. It has now stopped, right as the price gap between upside bets and catastrophe insurance leaves the low $70,000s as the one area where few traders are covered.