Michael Arougheti
Analyst · SunTrust
Great. Thanks, Tony, and good afternoon, everyone. Maybe to help put the market opportunity in context, there are a number of industry trends that are particularly favorable for us and should drive our growth into the future. There is a growing thirst for yields and higher noncorrelated returns from investors of all types. Pension funds are facing funding gaps. Insurance companies are experiencing low single digit returns while trying to reduce volatility. Sovereign wealth funds are searching for higher noncorrelated risk-adjusted returns, and many individual investors are requiring higher current yields and income. At the same time, the global banking system is facing higher capital requirements and required deleveraging as a result of increased bank regulation and continuing challenging global economic conditions. This is leading to increased opportunities for nonbank capital providers like us to take advantage of the void that is created as these banks vacate certain markets. And we believe strongly that our Direct Lending and Real Estate debt platforms, as well as certain strategies within our Tradable Credit Group, are particularly well positioned to take advantage of these trends as we focus on directly originating these assets, providing more flexibility while receiving attractive relative risk-adjusted returns.
Investors are increasingly making choices to invest with asset managers with global diversified investment platforms and scaled infrastructure. We have been making significant investments to scale our back office and to further expand our platform. We continue to diversify into attractive new areas, including global real estate equity, and subsectors within direct lending like energy and our recently announced expansion into the commercial finance sector.
We have also substantially added to our noninvestment personnel, particularly in marketing and business development, information technology and legal and compliance, all to help us scale our business and support a much larger asset base.
As Tony highlighted, the power of our platform is rooted in our philosophy of sharing our best ideas, expertise and resources across our businesses in a unique culture of collaboration. We leverage the broader Ares platform for deal flow, relationships and due diligence, and we use our flexibility and our multi-asset class capabilities in tandem to source and make attractive investments across different market environments and parts of the cycle. For example, in our Private Equity Group, we've invested successfully in both traditional buy-outs and growth capital in robust economic conditions and in distress for controlled investments in less robust environments. Within Direct Lending and Tradable Credit, when market terms on new investments are less favorable, we are increasingly selective with a more intense focus on quality and the more senior portions of the capital structure. So we change our investment mix based upon our fundamental view of relative value for a given security weighted against our macroeconomic and individual market outlooks. We also focus on differentiated sourcing using direct origination platforms, which we believe provide more proprietary investment opportunities.
As Tony mentioned, we do believe that our business model is unique. Given the relative size of our private invest -- equity investment platform, we are not a performance-fee driven or private equity-centric business. We still have performance-related earnings fluctuations, but we hope to prove that we are more stable than more PE-centric business models given our higher mix of management fees and our fee revenue and the relatively higher percentage of our performance fees based upon yield-oriented investment strategies.
Our balance sheet has already benefited from our status as a public company. In connection with our IPO, we increased our revolving credit facility provided by 17 banks from $735 million to over $1 billion, and we extended the term out to April of 2019 with a current interest rate of LIBOR plus 175 basis points. This greater access to longer and attractively priced capital is a strategic advantage providing financial flexibility and representing additional earnings power for us.
Our strategy is to continue to execute on the same growth avenues that we have in the past. We expect to continue to grow our AUM organically by adding new investors, ancillary products, geographies and distribution channels.
In terms of geography, we are particularly excited about our expansion in European corporate and real estate credit. And from a distribution standpoint, we see meaningful opportunity for expansion in the insurance sector, where insurers are seeking higher returning alternatives to traditional fixed income without significant volatility; and in the retail channel, where individual investors are demanding higher current income for retirement.
So we are expanding our products and our distribution channels to address these demands. We are also focused on cross-selling new fund offerings to our existing growing investor base. For example, we have identified over 500 of our direct institutional investors who currently have investments in a single Ares fund -- that invest in other asset classes we provide. We also continue to explore new strategic partnerships and acquisitions of investment teams and ancillary investment platforms when we believe that they can be highly complementary to our core competencies.
And so, finally, before I turn a call over to our CFO, Dan Nguyen, just let me take a minute to highlight a few themes regarding our first quarter results. In the last 12 months, our assets under management grew year-over-year by about 27%, modestly above our 5-year compound annual growth rate and AUM of 23%. This was primarily driven by about $17 billion in new commitments. And importantly, our dry powder increased meaningfully from $15.3 billion as of March 31, 2013, to $18.2 billion as of March 31, 2014. And as Dan will discuss, we do expect to earn a significant amount of new management fees as we invest this capital.
Our investment returns have remained strong over the past year. Our credit portfolios continue to perform well against the relevant benchmarks in what has been a healthy and benign credit environment. And we believe that we remain well positioned should interest rates start to rise due to the fact that 80% to 90% of our credit assets are in floating rate securities. We believe the underlying companies and real property assets within our private equity and real estate funds are also well positioned for a slow, growing global economy.
From a revenue perspective, our management fees, which include our Part I incentive fees from ARCC, increased about 29% year-over-year, with all groups contributing to higher fee income. Our management fees now represent 86% of our total fee revenue. Net performance fees were lower year-over-year as we faced a tough comparison in our Tradable Credit Group as market credit asset appreciation was much greater in last year's first quarter. And from an earnings perspective, you will see that our economic net income was lower by a similar amount due to the lower performance fees in Tradable Credit and also due to the significant investments that we've made in our firm to expand our platform over the last 12 months.
We've added approximately 160 professionals to expand in areas such as real estate equity and European Direct Lending, as well as noninvestment professionals in business development, information technology, legal, compliance and tax. These short-term costs, which have reduced current period profitability, are investments that should pay off in future periods as we grow.
And with that, I'll now ask Dan to walk us through our first quarter results in a little bit more detail. Dan?