The U.S. Securities and Exchange Commission has approved a higher position and exercise limit for options on BlackRock’s iShares Bitcoin Trust. The cap now rises from 250,000 to 1 million contracts per exchange.
The rule change was filed by NYSE Arca under Section 19(b)(1) of the Securities Exchange Act and took effect immediately. The exchange argued that the previous limit no longer reflected current trading activity around IBIT options.
Higher Cap Supports Hedging and Market-Maker Inventory
The adjustment gives institutional participants more room to hedge or express Bitcoin exposure through IBIT options. For market makers, the higher threshold can also improve inventory management by reducing constraints on larger options books.
The SEC said IBIT’s scale and secondary market activity support the expanded limit. The order does not change the fund’s custody structure, operating mechanics or underlying exposure to Bitcoin.
Existing surveillance systems and risk controls will remain in place under the revised framework. The Commission will continue collecting public comments even though the rule change is already active.
IBIT Derivatives Become a Larger Institutional Channel
The higher ceiling strengthens IBIT’s role as a major derivatives venue tied to spot Bitcoin ETF exposure. As the largest spot Bitcoin ETF by assets, IBIT has become a key instrument for institutions managing Bitcoin-linked risk.
The change removes a previous contract-volume constraint, but it does not signal a directional view on Bitcoin itself. It simply allows larger options positions to be established within the approved exchange framework.
The new 1 million-contract limit gives traders greater flexibility in IBIT options positioning. The next useful indicators will be open interest growth, market-maker activity, options liquidity and whether larger hedging flows develop under the expanded cap.