Oaktree Capital Management, Inc.
Oaktree Capital Management is a Los Angeles-based alternative investment firm and the world's largest investor in distressed debt. Founded in 1995 by Howard Marks and Bruce Karsh, it runs about $223 billion across credit, equity, and real estate as of December 2025. In water it is an occasional investor, with one tracked company.
Compiled by Antoine Walter, (don't) Waste Water, from official filings and direct intelligence in Leviathan.
The take
Oaktree Capital Management is about as far from a water specialist as finance gets. It is the firm Howard Marks and Bruce Karsh built in 1995, and it grew into the world's largest investor in distressed debt, the discounted bonds and loans of companies in trouble, alongside credit, real estate, and private equity. At roughly $223 billion under management, water is not a strategy here, it is a footnote.
Oaktree has not been an independent company for years. Brookfield, the Canadian asset manager, bought a majority stake in 2019, and in October 2025 it agreed to acquire the rest of the firm for about $3 billion, a deal that would fold one of the world's great credit shops fully into Brookfield. The founders stay on, Marks and Karsh as co-chairmen, with Armen Panossian and Robert O'Leary as co-CEOs running the investment teams.
Oaktree's water footprint, in the data I keep, is a single name: Hydrosat. Hydrosat builds satellites that read the planet in thermal infrared, turning surface heat into field-by-field readings of crop stress, drought, and how much water farmland is actually using. Even that connection runs at arm's length, through Hartree Partners, the global energy and commodities trader that Oaktree-managed funds co-own, which backed the company rather than Oaktree's flagship credit funds.
Oaktree, for a newcomer trying to place it, is not a water investor in any meaningful sense, and this page should say so plainly. It is an opportunistic generalist whose one brush with water arrived sideways, through a commodities affiliate backing a satellite-data company. When a $223 billion firm backs a single company in your sector, it reads as curiosity, not conviction, and the open question is whether water data ever grows big enough to earn a serious second look.
Water Commitment Score
Compiled from official filings, third-party records, and direct intelligence from investors and founders, in Leviathan · recomputed monthly · as of Jun 2026.
How they invest
Portfolio · 1 water companies
Invests alongside
Highlighted = profiled on (don't) Waste Water.
Frequently asked
- What does Oaktree Capital Management invest in?
- Oaktree Capital Management invests across credit, equity, and real estate, and is the world's largest investor in distressed debt, the discounted bonds and loans of troubled companies. It manages roughly $223 billion as of December 2025. Water is not a focus, with just one tracked water-related holding.
- Who runs Oaktree Capital Management?
- Oaktree Capital Management was co-founded in 1995 by Howard Marks and Bruce Karsh, who remain co-chairmen. Day-to-day leadership sits with co-CEOs Armen Panossian, who heads performing credit, and Robert O'Leary. Marks is widely followed for his investment memos on market risk and cycles.
- Is Oaktree Capital Management a water investor?
- Oaktree Capital Management is a generalist alternative investment firm, not a water specialist. In (don't) Waste Water's data it has one tracked water-relevant position, the satellite-analytics company Hydrosat, and even that was reached indirectly through Hartree Partners, an energy and commodities trader that Oaktree-managed funds co-own.
- Who owns Oaktree Capital Management?
- Oaktree Capital Management has been majority-owned by Brookfield, the Canadian asset manager, since 2019. In October 2025 Brookfield agreed to buy the remaining stake for about $3 billion, a step toward full ownership. Oaktree's founders and investment teams continue to run the business.
- Where is Oaktree Capital Management based?
- Oaktree Capital Management is headquartered in Los Angeles, California, where Howard Marks and Bruce Karsh founded it in 1995. The firm has more than 1,500 employees across offices in 26 cities worldwide, including New York, London, and Hyderabad.