Chris Concannon
Chief Executive Officer at MarketAxess
Good morning. I'm very pleased to update you on the significant progress we made in the third-quarter to enhance our franchise and drive long-term growth. First in terms of the quarter, we generated revenue of $172 million. Earnings per share was $1.46 on net income of $55 million. Our quarterly results were impacted by unusually low levels of credit spread volatility during the seasonally slower summer period. We are seeing some early positive signs of higher volatility in October.
We are not happy with our growth rates in US credit. But we believe we are taking the right steps to improve our growth rates in our business in the years ahead. Turning to my strategic update on slide three. We continued to innovate through the launch of our new trading platform X-Pro. X-Pro delivers our proprietary data for pre-trade analytics and protocol selection. We specifically targeted portfolio trading solutions in X-Pro to address our US high-grade market-share challenges. In low-volatility market environments protocols like portfolio trading become more prevalent with portfolio trading rising to 7% of TRACE during the quarter.
Activity on dealer-centric protocols also increases in low-volatility markets and we are continuing to focus our growing -- on growing our Mid-X and dealer RFQ protocols. We believe that we have a superior dealer RFQ solution because of our comprehensive Open Trading liquidity. We are pleased to see our portfolio trading clients increasingly leveraging our unique pre-trade analytics like trade ability only available through X-pro. 35% of our portfolio trades were executed on X-Pro in October month to date, up from 18% in the third-quarter. We continue to deliver unique data and functionality enhancements to our portfolio trading offering in X-Pro.
X-Pro integrates our real-time data, our pre-trade analytics, and our trading protocols into a simple trader cockpit that allows a user to seamlessly manage more line items and be more productive. Adaptive Auto-X, a fully automated trader solution provides a suite of sophisticated AI-driven trading algorithms that integrate all of our trading protocols to programmatically improve execution outcomes while reducing market impact. Execution solutions like X-Pro and Adaptive Auto-X allowed traders to fully leverage the power of MarketAxess, operating in a far more efficient manner, while accessing the best possible liquidity and pricing available in the market.
These products answer our clients growing demand to help them do more with less. Although Adaptive Auto-X was still in pilot phase during the quarter early results show promising transaction cost-savings and reduced market impact in US high-grade. Our client franchise has never been stronger with a record of over 2000 active clients across 67 countries. We delivered strong growth in our international businesses and in municipals, as well as record date of revenue as our investments to broaden our geographical and product footprint pay-off. We closed the acquisition of pragma. We integrated the MuniBrokers platform and we rolled out Open Trading to several emerging local markets, further solidifying our global leadership in emerging markets E-trading.
Slide four illustrates how we are integrating our NextGen proprietary data with X-Pro to help traders, do more with less. Our unique proprietary data helps clients with their portfolio construction objectives by leveraging liquidity scores, tradability data, and our soon to be launched matchability data. These data tools can help clients predict the price of a bond, the depth of the market, and the likelihood of finding another matching buyer, seller on the platform. Our data tools also help clients optimize their protocols selection across RFQ, open trading, portfolio trading, or automation. Last with the launch of our AI dealer select data, we can now help inform our clients about their optimal dealer selection based on the bond they are trading.
Slide five highlights the expansion of our addressable market. Acquisitions totaling approximately $360 million and significant organic investments in new products and protocols over the past several years have expanded our addressable market by an estimated $3 billion across credit rates data and post-trade. We believe that our acquisition of Pragma will be a key accelerant of our ability to capture this opportunity, while enhancing our technology footprint. In expanding market higher trading velocity, new product expansion, and new protocols and workflows are all additional levers of growth that could enhance our addressable market. Slide six provides an update on market conditions.
Since the end of the third-quarter, volatility has continued to move higher, which has benefited ETF market-maker activity, and US high-yield estimated share. High-yield ETF market-maker ADV[phonetic] on our platform is up 94% from the third-quarter. With over $7 trillion in global corporate debt set to mature in the next three years borrowers will have to refinance their debt at much higher rates, creating the potential for higher levels of turnover in the secondary markets. The proposed new additional bank capital requirements could lead to further constraints on-bank balance sheets for market making, highlighting the importance of a diverse liquidity pool like Open Trading.
Before I turn the call over to Rich Schiffman, I wanted to provide an update on October. Current October trends showed high-grade estimated market-share and market volumes slightly above September levels while high-yield estimated share and market volumes are above -- both above September levels. We have five important trading days remaining in the month in both high-grade and high-yield market-share normally show increases in the last week of the month. Additionally, global portfolio trading ADV in October is approximately $770 million, up 77% from Q3 levels. Now let me turn the call over to Rich to provide you with an update on our market.