Andrew Wiechmann
Chief Financial Officer at MSCI
Thanks, Baer, and, hi, everyone. During the quarter, it was encouraging to see the breadth of opportunities and diversity of revenue streams driving our solid top line growth. This included very strong non-recurring revenue, which more than offset some of the lingering cyclical impacts we saw in parts of our asset-based fees. And we delivered solid double-digit subscription run rate growth with a remarkably stable retention rate, despite some of the market pressures.
In Index, client demand was broad-based with double-digit subscription run rate growth for all of our sub-product areas, including market cap modules, ESG & Climate modules, factor modules and custom index offerings. Our run rate growth with asset managers and asset owners was 10% and 12%, respectively. Collectively, these client segments represent about 70% of our Index subscription run rate.
Asset base fees have swung to positive growth, driven by a rebound in AUM-linked revenues, which were supported by both market appreciation and strong inflows. Since the end of March, we've seen $18.7 billion of inflows into MSCI-linked equity ETFs, which combined with a gradual rebound in market levels has driven AUM balances to increase by over $67 billion. There were net inflows of $15.6 billion into MSCI-linked ETFs with geographic exposures to developed markets outside the U.S., and $3.1 billion of inflows into MSCI-linked ETFs with emerging market exposures.
From a product lens, there were $5.2 billion of inflows into ETFs linked to MSCI ESG & Climate indexes, while $2.5 billion of inflows went to ETFs linked to MSCI factor indexes, fueled by strong flows into the quality factor. In fact, the AUM balance of equity ETFs linked to MSCI indexes was greater than $1.4 trillion as of July 20. Volumes from listed futures and options linked to MSCI indexes were lower year-over-year relative to the high volatility environment we saw a year ago. This is consistent with what we would expect to see when AUM balances rebound.In Analytics, subscription run rate growth was 7%. We had another quarter of very strong equity factor model sales as clients continue to turn to us to help understand risk and market factors in this dynamic environment. And our strong retention rate underscores the mission-critical nature of our tools, particularly in these challenging times.
In June, we delivered roughly 47,000 liquidity analytics reports per day for our clients, which is up 15% from our average daily levels in December. We now process over 850 million security holdings daily on behalf of our clients in Analytics, a testament to the scale at which investors rely on us for their most important portfolio decisions. And the capabilities across analytics are incredibly strategic for the firm, helping to fuel growth across product areas, although, as we've mentioned before, we continue to expect new sales and cancels to be lumpy quarter-to-quarter in Analytics.
In our ESG & Climate reportable segment, our run rate grew 26%, with 22% growth in ESG and 50% growth in Climate. The volume of large ticket deals has improved from last quarter, although, still down from last year's levels. Net new recurring sales improved 20% since the first quarter, but were down meaningfully from a record second quarter last year, reflecting more measured purchasing decisions and longer sales cycles from our clients.
We continue to have conviction in our long-term targets of mid-to-high 20% growth given the numerous layers of opportunities and the powerful secular drivers. As Henry and Baer mentioned, our long-term opportunities remain durable and attractive for both ESG & Climate. In Real Assets, we drove 9% organic run rate growth. As Baer indicated, our benchmarking and market and portfolio insights offerings remains strong with double-digit organic growth, while sales and retention of our transaction data products were more muted, as they are cyclically correlated with the reduced volume of commercial real estate transactions.
We continue to execute on our real asset product road map, and we are seeing early and encouraging demand for products like our mortgage debt intel offering. These solid operating results across the business helped drive 17% growth in adjusted EPS in the second quarter. Helping to fuel the growth, we had very strong non-recurring revenue in the quarter, benefiting from strong sales of our index free-float product. While these non-recurring revenues will fluctuate meaningfully quarter-to-quarter, we continue to see healthy growth in the underlying demand for many of the products that are often sold as non-recurring, such as index licenses for OTC derivatives, history data products and other unique datasets, as well as analytics implementations.
Importantly, these sales often open the door for broader conversations and can convert into recurring subscriptions. Share repurchases drove $0.06 of the year-over-year increase, as our consistent approach allowed us to continue to capitalize on attractive opportunities. It's worth noting that our free cash flow conversion and collections were reasonably strong in the quarter, although, we continue to remain somewhat cautious on collection activity for the balance of the year. We ended June with a cash balance of nearly $800 million, enabling us to remain positioned for strength.
Finally, I would like to provide some color on our 2023 guidance, which remains mostly unchanged and assumes market levels remain relatively flat for the balance of the year. We have left our expense guidance ranges unchanged, although, if market levels remain stable at current levels or increase further, we could be towards the top half of our expense ranges.
On capex, we have modestly increased our guidance range, mainly reflecting our increased pace of capitalized software development costs. We remain excited and encouraged by the strong client engagement we are seeing across numerous growth opportunities, and we continue to be closely aligned with employees to capitalize on the long-term trends transforming the investment industry. We look forward to keeping you posted on our progress.
And with that, operator, please open the line for questions.