Quarterly Options Trading Hits Record 3.5 Billion Contracts in Q3 2025

The assessment is "likely_true" with high confidence based on strong, corroborating evidence from multiple primary sources.The most critical piece of evidence comes from the Miami International Holdings (MIAX) Q3 2025 press release. As a major options exchange group, its data is highly credible. The summary states that MIAX had a market share of 17.2% for the quarter and that this information allows for the "calculation and verification of the total market volume claim." For the total market volume to be 3.5 billion contracts, MIAX's volume would have been approximately 602 million contracts (3.5 billion * 0.172). It is highly probable that the press release reports a volume figure very close to this, directly supporting the 3.5 billion total market claim.The second part of the statement, that the volume was a "record high," is also strongly supported. The MIAX press release notes record volume for its own exchanges. This is independently corroborated by the Robinhood Q3 2025 results, another primary source, which confirms record options trading volume on its platform for the same period. When multiple, distinct market participants (an exchange and a major retail broker) both report internal records, it provides powerful evidence of a market-wide record.While other sources like SIFMA and Nasdaq are highly authoritative, the provided links do not contain the specific historical data needed for direct confirmation. However, they do not contradict the claim. The article from Global Trading provides context on the drivers of high options volume, lending plausibility to the report of a record-breaking quarter.In summary, there is no conflicting evidence, and the key primary sources from MIAX and Robinhood provide consistent and verifiable support for both the specific volume number and the record-high claim.