Fed decision could push Bitcoin into $6.3B IBIT options wall

Federal Reserve policy news scheduled for Wednesday — the policy statement at 2 p.m. ET, Chair Jerome Powell’s press conference and updated economic projections — will come ahead of a large options expiry for BlackRock’s iShares Bitcoin Trust ETF (IBIT) on Friday, Sept. 18. Cboe listings show 1,465,553 IBIT contracts set to settle that day, split into 833,070 calls and 632,483 puts.

Standard equity options typically represent 100 shares each. The IBIT book therefore converts to about 146.6 million share-equivalents. Using an IBIT reference price of $42.87, that equals roughly $6.28 billion of gross underlying share value. That figure describes the scale of outstanding contracts and does not disclose net dealer exposure, which side of trades is long or short, or how many shares will actually change hands at expiry.

Open interest is concentrated in a narrow range of strikes. About 545,861 contracts, or 37.2% of the total, sit between the $40 and $45 strikes. The single largest strike position is the $45 with 141,670 contracts; the $40 strike holds 122,979 contracts. A static calculation of gross intrinsic value across the book put the lowest point near an IBIT price of $41, a measure that excludes premiums, transaction costs, early exercise and any position changes.

Market participants commonly map IBIT option strikes to Bitcoin using the ETF’s reference price. With Coin Metrics’ Bitcoin benchmark near $75,962 and IBIT at $42.87, the crowded $40-to-$45 band corresponds roughly to Bitcoin prices between about $70,900 and $79,700. At trading near $76,000, Bitcoin sits near the middle of that implied range.

IBIT options are physically settled, meaning exercised contracts deliver ETF shares rather than cash or Bitcoin. Traders may close or roll positions before expiry, allow contracts to lapse, or be exercised and assigned. In May, Cboe raised IBIT option position and exercise limits from 250,000 to 1 million contracts, enabling substantially larger same-side exposure than previously permitted.

Price moves that follow the Fed sequence will intersect the concentrated IBIT strikes before Friday’s settlement. If Bitcoin moves above about $79,700 or below roughly $70,900 and holds those levels through Friday, the concentrated strikes would account for less of the near-term price landscape. If a Fed-driven swing is followed by a return toward the $40-to-$45 IBIT band, hedging and position adjustments tied to expiry mechanics could affect short-term flows.

Public open-interest data do not reveal the precise hedging strategies firms will use or the exact amount of trading that will occur at settlement. The timing of the Fed decision and the IBIT expiry will make clear whether a macro-driven price reaction or option-settlement dynamics are more closely aligned with short-term Bitcoin positioning.