On 19 May 2026, the US Securities and Exchange Commission published a notice regarding a proposed rule change by BOX Exchange LLC. The filing seeks immediate effectiveness to amend IM 3120 2 under Rule 3120. This proposal aims to increase position and exercise limits for options on the iShares Bitcoin Trust ETF. Market participants currently face a limit of 250,000 contracts for this cryptocurrency vehicle. The exchange wants to raise this threshold to 1,000,000 contracts on the same side of the market. This competitive filing follows a recent regulatory approval obtained by Nasdaq ISE, LLC. The US SEC decided to waive the traditional 30 day operative delay for this rule change. Investors and global crypto entities can submit public comments on the new limits.
US SEC Waives Operative Delay For IBIT Options Rule Change
The regulatory filing highlights a direct effort to align trading rules across options marketplaces to ensure fair competition.
“This is a competitive filing that is based on a proposal recently submitted by Nasdaq ISE, LLC (‘ISE’) and approved by the Commission.”
The US SEC agreed to expedite the implementation of the rule modification.
“Therefore, the proposal raises no novel legal or regulatory issues. Thus, the Commission believes that waiver of the 30-day operative delay is consistent with the protection of investors and the public interest. Accordingly, the Commission hereby waives the 30-day operative delay and designates the proposed rule change operative upon filing.”
The US SEC in the text above confirms that the operational alignment with existing exchange rules justifies skipping the standard waiting window.
Market Liquidity Analysis Justifies Increased Position Limits
The exchange provided statistical data comparing the iShares Bitcoin Trust ETF against alternative commodity based fund structures.
“As of February 11, 2026, the market capitalization for IBIT was 52,661,063,818 with an average daily volume (‘ADV’), for the preceding 6 months prior to February 11, 2026 of 61,803,035 shares.”
To establish safety baselines, the platform evaluated how the proposed changes stack up against older physical commodity options markets.
“Comparing a position limit of 1,000,000 for IBIT options against other options on ETFs with an underlying commodity, namely GLD, SLV and BITO, a position limit exercise in GLD represents 6.63% of the float of GLD, a position limit exercise in SLV represents 4.53% of the float of SLV, and a position limit exercise of BITO represents 12.44% of the float of BITO. In comparison, a 1,000,000-contract position limit in IBIT options would represent 7.474% of the float of IBIT.”
The US SEC in the document displays this mathematical correlation to prove that a 1,000,000 contract ceiling remains conservative relative to established commodity exchange traded funds.
Clearing House Data Backs Cryptographic Deliverable Safety
The filing uses quantitative models to evaluate potential systemic risks connected to the delivery of underlying assets upon option exercise.
“If a position limit of 1,000,000 contracts were considered, the exercisable risk would represent 7.474% of the outstanding shares outstanding of IBIT. Since IBIT has a creation and redemption process managed through the issuer, the position limit can be compared to the total market capitalization of the entire Bitcoin market and in that case, the exercisable risk for options on IBIT would represent 0.278% of all Bitcoin outstanding.”
The text addresses the theoretical market disruption that large scale derivative assignments might cause to digital asset networks.
“Assuming a scenario where all options on IBIT shares were exercised given the proposed 1,000,000-contract position limit (and exercise limit), this would have a virtually unnoticed impact on the entire Bitcoin market.”
The US SEC in the text above reviews these metrics to show that the scale of the broader spot market prevents concentrated derivatives positions from causing manipulation.
Regulatory Reporting and Risk Controls Mitigate Over The Counter Migration
The exchange emphasizes that expanding public exchange limits prevents institutional trade volume from moving into dark unregulated spaces.
“The Exchange believes that the current position and exercise limits in IBIT options are restrictive and will hamper the listed options markets from being able to compete fairly and effectively with the over-the-counter (‘OTC’) markets.”
The platform notes that standard surveillance practices remain fully operational despite the higher capacity allowances.
“Further, the reporting requirement for such options would remain unchanged. Thus, the Exchange will still require that each Participant that maintains positions in impacted options on the same side of the market, for its own account or for the account of a customer, report certain information to the Exchange.”
The US SEC in the text above maintains visibility over large traders by enforcing unchanged threshold warnings for participants.
