Terrence A. Duffy
Chairman and Chief Executive Officer at CME Group
Thanks Adam, and thank you all for joining us this morning. I'm going to make a few brief comments about the quarter and the overall environment. Following that, Lynne will provide an overview of our third quarter financial results. In addition to Lynne, we have other members of our management team present to answer questions after the prepared remarks.
Our record-breaking performance in the third quarter demonstrated the continued growing need for risk management globally. The third quarter average daily volume of 28.3 million contracts was the highest quarterly ADV in CME Group's history and increased 27% compared to the same period last year. This strong growth was broad based. We achieved year-over-year growth in both volume and open interest across every asset class for the second consecutive quarter.
In aggregate, our financial products volume grew by 28% and our commodity sector volumes grew by 20%. This record volume was aided by the effectiveness of our volume tiers, including the 36% year-over-year growth in our interest rate complex to 14.9 million contracts a day. With all time record volume levels for both SOFR futures and Treasuries.
We achieved this growth without lowering any fees or introducing any new incentive programs for these products. The lower RPC was driven by increased trading volume and our focus on tiering allowed our incremental earnings growth, given the operating leverage in our model. Our SOFR complex traded over 5.9 million contracts per day in the quarter and 6.9 million per day in September, all while seeing the customer network broaden with large open interest holders reaching a new record high in September.
As you know, we often hear the view that a rising Fed rate environment is best for CME's interest rate volumes. However, over the last year there have been no Fed rate hikes and one rate cut, and our interest rate complex grew 17% over the prior year, which had six rate hikes totaling 2.25%. Opposing views of potential and actual Fed rate changes combined with ongoing high levels of issuance and deficit financing should continue to provide tailwinds for interest rates trading. The uncertainty around the U.S. election and geopolitical events around the world also contribute to a growing need for liquid and efficient markets to manage these risks in interest rates and across asset classes.
Q3 was also a record quarter for our International business, where average daily volume reached 8.4 million contracts, up 29% versus last year. This was led by a record 6.2 million average daily volume from EMEA, which was up 30%, and 1.9 million contracts per day in APAC, or up 28%. The record international volume was driven by growth in all six asset classes in both EMEA and APAC, with the highest volumes coming from interest rates and equity products. In addition to the impressive volume results, we delivered record financial results for the second consecutive quarter.
With that short summary, I will now turn the call over to Lynne to review these results in more detail.