Sean Tully
Senior Managing Director, Global Head of Financial and OTC Products at CME Group
Thank you very much, Terry. As Terry said the financials unit saw a number of significant developments in the third quarter, particularly regarding SOFR, the overall rates market and our crypto business. Our Silver futures saw average daily volume grow to 124,000 contracts per day in the third quarter, up over 180% year-over-year, and our open interest grew to over 1 million contracts, up 140% year-over-year. Additionally, in the month of October, we're seeing average daily volume of 227,000 SOFR futures contracts, and open interest of 1.2 million contracts. Over the last 60 days, our SOFR futures ADV made up over 78% of the global SOFR futures volumes and our open interest represents approximately 95%.
Further, on July 29, the alternative reference rate committee of the Federal Reserve endorsed CME's one-month, three-month and six-month term SOFR rates. And on September 19, CME began publishing a 12-month term SOFR rate as well. Demand for access to our term SOFR rate is very high, as we have already executed more than 100 term SOFR licenses to market participants, and we are currently working with an additional 300 firms who are also interested in licensing. Our fall backs for Eurodollar futures and options have also been a very strong success since we finalized our rule book back on March 29. SOFR linked open interest includes SOFR futures as well as Eurodollar futures and options that reference a LIBOR rate, which will be set after June 30th, 2023. Those contracts have grown from 11.8 million open interest on March 29, to 16.3 million open interest as of October 25, up 38%.
Further, the average daily volume of our SOFR linked futures and options in Q3 was 1.6 million contracts, representing 52% of CME's total short-term interest rate ADV. In addition, our long-held view regarding the rates market environment continues to gain veracity. Using CME's FedWatch Tool, we can see the market is now pricing in a 60% chance of tightening by June 2022, up from just 17% just one month ago. Our FedWatch Tool also now indicates an 87% chance of at least two Fed tightenings by the December 2022 FOMC meeting.
In Q3, the improving rates environment, as Terry said, led to a 53% growth in our interest rates ADV versus third quarter of 2020. Nonetheless, rate volatility while higher in the third quarter of 2021 than it was in recent quarters remained historically quite low. For example, in the eighth quarterly Eurodollar futures, it achieved just the 37th percentile of volatility versus the history going back to 2007. And our 10-year note futures achieved only a 25th percentile volatility rank showing the current volatility, even in Q3, was very low.
Regarding CME Group's crypto offering, first, let me say, the recent approval of ETFs based on CME Bitcoin futures is not only an important milestone for futures contracts but also a positive development for the broader Bitcoin ecosystem. This is a direct reflection of the strong growth in client demand or exposure to Bitcoin via CME's transparent, deeply liquid and regulated Cryptocurrency futures contract. The launch of ETFs based on CME's Bitcoin futures' validation from the industry of what we've known for some time, attaining Bitcoin futures are the leading source a Bitcoin price discovery in the industry.
Two new Bitcoin ETFs were launched just last week and another this morning, both of which are based on -- or all 3 of which are based on CME's Bitcoin futures. On the back of those launches, our Bitcoin futures' October ADV has risen to over 12,000 contracts. We're over 60,000 equivalent Bitcoin with a record 3.5 billion per day, up 57% over September. Additionally, average open interest in our Bitcoin futures has grown to a record 17,433 contracts, up 70% versus September. Our Micro Bitcoin futures volume is also up 33% month-over-month and our average open interest is up 97% month-over-month. With that, I'll turn it over to Derek.