Michael Sacks
Analyst · JPMorgan
Thank you, Stacie, and thank you to all of you for participating. The second quarter marked 50 years of operations for GCM Grosvenor, a rarity in the alternative investment arena, and we are proud to celebrate that milestone. What is particularly nice is that we are as encouraged today by our ability to drive value for clients and shareholders as we have been at any time over the last 30 years that I have been at the firm.
The second quarter of 2021 was another strong quarter for GCM Grosvenor with solid investment results and growth in assets, revenue, profitability and earnings power. The quarter's results left us solidly on track with regard to our 12% to 15% fee-related revenue and 15% to 20% fee-related earnings growth targets. We have often cited strong free cash flow generation and the ability to return capital to shareholders as attractive features of our business.
In light of our results and future prospects, our Board has approved a dividend increase of 12.5% to $0.09 per share from $0.08 per share. That $0.09 per share dividend is payable on September 15 to shareholders of record on September 1. Our Board also authorized a $25 million stock repurchase plan, of which $6 million will be used to reduce the number of Class A shares being delivered in August that are associated with prior equity awards.
Turning to Slide 4 of our earnings presentation. From the end of the second quarter of 2020, we have seen growth in assets under management, which increased 18% to $67 billion; in fee-paying assets under management, which increased 11% to $55 billion; and in contracted not yet fee-paying assets under management, which increased 26% to $7 billion. Our asset growth has been the product of solid fundraising, investment performance and the conversion of contracted not yet fee-paying assets under management. Our pipeline, including contracts in process, our co-mingled funds in market, our private market separate account re-ups and new separate account opportunities remains robust, and we are optimistic with regard to fundraising for the remainder of the year.
As Jon will discuss further, we've invested in our business development efforts, including the establishment of GCM Broker Insurance Solutions, which we believe holds real promise for the firm. During the quarter, 72% of our $1.5 billion of funds raised came from existing clients and 28% came from new clients, a continuation of the expected return to a more normal picture following the initial COVID shock. Year-to-date, we've raised capital in all of our verticals with infrastructure seeing the largest increase among our private market strategies. Our fee-related earnings increased 9% over the second quarter of 2020 and 23% for the first half of 2021 as compared to the first half of 2020.
Our second quarter FRE margin was 32%, and our year-to-date FRE margin of 31% compares favorably to the 28% margin we experienced in the first half of 2020. We continue to believe we have operating leverage with regard to FRE margin. For the quarter, our adjusted EBITDA increased 17% over the second quarter of 2020 and 34% for the first half of 2021 as compared to the first half of 2020. Our adjusted net income increased 30% over the second quarter of 2020 and 56% for the first half of 2021 as compared to the first half of 2020.
Turning to Slide 5 of the presentation. The value of the firm's share of investments and unrealized carry at net asset value more than doubled to $349 million from $158 million a year ago. Those numbers are inclusive of the Mosaic assets, which were $290 million as of June 30, 2021. It is worth noting that the value of the Mosaic acquisition improved considerably from the March 31 values that were the best information available when we communicated via press release on June 23. As noted in that release, we were able to secure a discount to the original option price, which incentivized us to exercise the option early.
The significant increase in the firm's share of carry at net asset value over the last year increases our earnings power considerably. Using an assumption of an average of 6.5 years to realize carry at net asset value, the forward-looking earnings power of the firm's share of carry translates into $38 million of estimated average annual revenue, which is considerably higher than trailing 12-month carry realizations and is more than double the earnings power of the firm's share of carry and net asset value a year ago.
Combined with $42 million of run rate annual performance fees, this results in $80 million of run rate firm share of incentive fees before cash-based incentive fee bonus. As of the end of the second quarter, we had collected approximately $9 million of performance fees so far this year. At June 30, we enjoyed $32 million of unrealized performance fees eligible to be realized in 2021, which are not reflected in our revenue. With positive absolute return strategies performance in the back half of the year, that number grows.
For the second quarter of 2021, our absolute return strategies management fees were up 11% compared to the second quarter of 2020. For the year, our absolute return strategies fundraising has been more than $1.1 billion, approximately $540 million of which was in the second quarter. We had net absolute return strategy outflows for the second quarter of approximately $280 million, resulting in a modest net outflow of approximately $76 million for the year.
Importantly, the fee rates on absolute return strategies funds raised have exceeded the fee rates on outflows, resulting in an increase in our absolute return strategies management fees for the second quarter despite the modest outflows and for the year. That is all before giving effect to the increase in absolute return strategies fee-paying assets under management associated with our investment results.
While we continue to maintain our base case expectation of flat flows for our absolute return strategies vertical and we are unlikely to change that assumption without clear evidence of a significant change in the macro environment, we continue to believe in the strong value proposition the vertical provides and the value that our breadth of strategies provides to both clients and shareholders. There are few alternative solutions providers with the ability to serve clients at scale in both private markets and absolute return strategies. As we have said before, when we look at the way the other solutions providers with similar growth rates in private market strategies are valued, and we look at our own valuation and breadth of strategies, we think the value of our platform is underappreciated.
During the quarter, we were added to the Russell 2000 and the S&P Total Markets indices. Also during the quarter, the CRSP Index, which had previously utilized an inaccurate free float share count corrected the share count, resulting in a share sale of approximately 10 million shares from 1 passive index shareholder upon rebalancing in June.
In closing, we leave the quarter with great confidence in our ability to deliver value for clients and shareholders over the remainder of 2021, in 2022 and beyond. And with that, I'll turn the call over to GCM Grosvenor President, Jon Levin. Jon?