The U.S. Securities and Exchange Commission on October 18, 2024 approved two exchange rule changes that allowed listed options on five funds holding bitcoin. NYSE American received approval for options on Grayscale Bitcoin Trust (GBTC), Grayscale Bitcoin Mini Trust BTC (BTC) and Bitwise Bitcoin ETF (BITB). Cboe received approval for options on Fidelity Wise Origin Bitcoin Fund (FBTC) and ARK 21Shares Bitcoin ETF (ARKB).
The scope matters because some early reports described a much broader approval. Both exchanges initially named more products, but their amended proposals were narrowed before approval. The operative orders covered five funds, not all 11 spot-bitcoin products approved in January 2024. The SEC acted on an accelerated basis and found the amended exchange rules consistent with the Exchange Act.
A regulated derivatives layer
An option gives its holder a contractual right, but not an obligation, to buy or sell the underlying fund shares at a specified price under defined terms. Allowing standardized options on these funds extended the U.S. spot-bitcoin product complex beyond shares into listed derivatives. That mattered institutionally because options can support hedging and price discovery without requiring a fund investor to transact directly in bitcoin.
That is interpretation, not an event-day measurement of demand. The approvals did not establish that trading began on October 18, did not guarantee liquidity and did not approve bitcoin itself. They changed exchange listing rules. Operational readiness, clearing and the exchanges' launch decisions remained separate questions.
The two orders also followed the SEC's September 20, 2024 approval of Nasdaq ISE's proposal for options on BlackRock's iShares Bitcoin Trust. In that sequence, October 18 broadened the set of bitcoin funds eligible for an exchange-listed options market, but it was not the first such U.S. approval.
Conservative limits and surveillance
Both approved proposals imposed a 25,000-contract position limit on the same side of the market for each fund, with an equivalent exercise limit. Both excluded the bitcoin-fund options from flexible, or FLEX, options trading. The SEC said the limits were consistent with investor-protection and anti-manipulation requirements; the exchanges characterized them as conservative relative to limits available for many other equity options.
The orders relied on exchange-supplied historical data rather than an October 18 market snapshot. Cboe reported that, as of August 7, FBTC had 201,100,100 shares outstanding and ARKB had 45,495,000. It also reported six-month trading volume of 1,112,861,581 FBTC shares and 297,360,739 ARKB shares. NYSE American reported that, as of August 30, GBTC had 284,570,100 shares outstanding, BTC had 366,950,100 and BITB had 68,690,000.
Those figures describe the evidence presented in the rulemaking record. They are not Coinburn calculations, they use different cutoff dates, and they should not be read as October 18 fund sizes or option-market activity. No option volume existed merely because a listing rule had been approved.
For surveillance, the exchanges said existing programs would monitor price and volume patterns, including potential manipulation, and would review activity in the underlying funds. The SEC also pointed to intermarket information-sharing and CME bitcoin-futures surveillance. That finding supported the legal approval; it was not a finding that spot bitcoin markets had become immune to manipulation.
What remained open on October 18
The central development was therefore narrower and more consequential than a generic “crypto approval” headline: two regulated options exchanges obtained authority to list standardized derivatives on five named bitcoin funds under tight initial limits. The next verifiable milestones were exchange notices, clearing readiness and actual trading launches. None should be projected backward into the October 18 record.
The complete source packet and revision history are retained with the newsroom record.
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This article provides news and analysis, not investment, legal or tax advice. Digital assets are volatile and may result in total loss.

