OCC Adds IEX Options to U.S. Clearing Network

OCC has added IEX Options to the group of U.S. trading venues for which it provides central counterparty clearing and settlement, extending its clearing network just days after IEX entered the listed-options market.

The Options Clearing Corporation said on October 5 that the relationship is its first with IEX. With IEX Options included, OCC now serves 20 options exchanges, two futures exchanges and one stock-loan exchange. IEX Options began trading on October 2, marking IEX’s first move into listed options after a decade operating its U.S. equities exchange.

The change puts trades executed on the new venue into the same post-trade clearing framework used by the rest of OCC’s participant exchanges. In its announcement of the IEX relationship, OCC said clearing members benefit from having an expanding set of options and futures markets cleared through a single central counterparty.

IEX joins OCC as options volumes remain elevated

OCC sits between buyers and sellers after an eligible trade is matched, becoming the central counterparty responsible for clearing and settlement obligations. Adding IEX Options does not change where an order is executed. It brings the new exchange into OCC’s existing clearing structure, allowing positions from IEX Options to be handled alongside contracts from other participating venues.

That role gives the announcement significance beyond the addition of another exchange name. OCC is the sole clearing organization for U.S. listed options and is designated as a systemically important financial market utility. Its clearing network therefore provides common post-trade infrastructure for an options market that has continued to expand in volume and in the number of competing venues.

OCC reported 1.486 billion options contracts cleared in September, up 6.2% from a year earlier. Through September, average daily options volume was about 70.6 million contracts, 20.6% above the comparable 2025 level. ETF options accounted for much of the growth, while index-options volume also rose sharply from the prior year.

IEX enters that market with an established equities business but without a prior OCC clearing relationship. OCC said IEX’s stock exchange has operated since 2016 and accounted for more than 4% of overall U.S. equity trading volume and about 8.5% of exchange-traded volume in the third quarter of 2026. The options launch gives IEX a second exchange product line and puts it into a market where several established operators already run multiple venues.

IEX Options is rolling out symbols through October

IEX is not opening the full symbol universe on a single day. The exchange’s options information page says the first tranche began trading October 2, with additional symbol rollouts tentatively scheduled for October 9, October 15, October 23, October 27 and October 30. That staged approach gives members and market makers a series of operational checkpoints as activity broadens across the month.

The exchange uses a customer-priority, pro-rata allocation model. IEX says it designed the market around protections intended to help liquidity providers manage the risk of trading against stale quotes, adapting ideas from its equities platform rather than copying that market structure wholesale.

One familiar IEX feature is a 350-microsecond symmetric delay on incoming orders and messages before they reach the matching engine. IEX says the delay will also support an optional Options Risk Parameter, or ORP, that is planned for the options venue. The tool is designed to identify situations in which an options quote may have become stale relative to changes in the underlying security and, depending on a market maker’s instructions, cancel or reprice the affected quote.

IEX Options also offers a Step-Up Mechanism intended to give members an opportunity to source liquidity on IEX before certain eligible marketable orders are routed to another exchange. Its production environment is located at the NY3 Equinix facility in Secaucus, New Jersey, with disaster recovery at the CH4 Equinix facility in the Chicago area.

Those design choices matter because launching an options exchange requires more than connecting an additional matching engine. Market makers need quoting controls, firms need market-data and order-entry connectivity, and clearing members need the post-trade systems required to carry positions and settle obligations. OCC’s role addresses the clearing side of that operating chain while IEX manages the trading venue itself.

SEC approval laid the groundwork for the new venue

IEX’s options expansion followed a lengthy regulatory process. The company filed its initial proposal with the Securities and Exchange Commission in late 2024, and the SEC approved the rule change on September 18, 2025 after several amendments and a formal review. The approval order described IEX Options as a fully automated trading system built on the core functionality of IEX’s approved equities platform.

The SEC process established the rule framework for listing and trading options, including market-maker obligations, order handling and allocation rules. IEX later made additional filings dealing with implementation details ahead of launch, including fee schedules, risk controls and the formal establishment of IEX Options LLC as a facility of Investors Exchange LLC.

OCC’s October 5 announcement represents the post-trade piece now operating alongside that regulatory and technical framework. Andrej Bolkovic, OCC’s chief executive, said IEX brings a different approach to options market structure and that OCC will extend the same clearing and risk-management standards used for its other participant venues. Ivan Brown, IEX’s head of options, said the exchange expects its work with OCC to continue as the market develops.

The immediate next milestones are the remaining October symbol tranches. IEX currently lists five additional rollout dates through October 30, while OCC will clear eligible contracts as the exchange broadens its product coverage. The pace of trading activity on the new venue, and whether IEX’s market-structure features attract sustained quoting and order flow, will become clearer only after the staged launch moves beyond its opening weeks.