How Howard Marks Built a Cultural Institution Out of Client Letters

In 1990, Howard Marks co-founded Oaktree Capital Management, a firm that would specialize in distressed debt and credit strategies. Beginning that same year, Marks began writing periodic memos to Oaktree's institutional clients. The first memo was 7 pages long and discussed the credit cycle. Marks wrote roughly one memo per quarter for the next 35 years. The cumulative collection — over 60 memos — became, like Warren Buffett's annual shareholder letters, an investment-education resource that institutional investors read carefully and circulated to colleagues.

By 2024, Oaktree managed approximately 192 billion dollars in assets across credit, distressed, real estate, and various private-investment strategies. The firm went public in 2007 and was acquired by Brookfield Asset Management in 2019. Marks himself, now 79, has continued writing memos through the entire arc.

The Topics. The memos cover a range of investment-relevant topics, but recurring themes include credit cycles, market psychology, the limitations of forecasting, the importance of risk management, and the difference between aggressive and defensive positioning. Marks's most widely cited memos include "It's Not Easy" (on the difficulty of investing), "Calibrating" (on market positioning), "Sea Change" (on the 2022 credit-cycle turn), and "What Does the Market Know?" (on the limits of price information).

The writing style is deliberate and unhurried. Marks tends to introduce a topic with a personal anecdote or historical example, develop it through 8-15 pages of careful analysis, and conclude with practical implications for professional investors. The memos do not predict specific outcomes but rather discuss probability frameworks and risk-reward calibrations.

The Influence. Marks's memos have shaped how a generation of credit and distressed investors think about cycles, risk, and market psychology. Specific frameworks — the "pendulum" model of investor psychology, the distinction between "first-level" and "second-level" thinking, the definition of "risk" as the probability of permanent capital loss rather than volatility — have become standard vocabulary in credit investment.

The memos have also influenced broader investment thinking. Buffett has referenced them. Druckenmiller has cited them. The Brookfield management team that acquired Oaktree has continued the memo tradition. The influence radiates well beyond Oaktree's actual portfolio decisions.

The Distressed-Debt Approach. Oaktree's investment specialty has been distressed debt — buying bonds and loans of companies in financial difficulty at fractional prices, with the expectation that recovery values will exceed purchase prices. The strategy requires deep credit analysis, willingness to operate during market panic, and patience to hold positions through restructuring processes.

Marks has described the strategy as "buying the same things at lower prices." When a company's bonds trade at 20 cents on the dollar, the analytical question is not whether the company is in trouble (it obviously is), but whether the recovery value will exceed 20 cents. If yes, the trade has positive expected value. The cumulative result of applying this discipline across thousands of distressed positions has been a track record that exceeds most major credit funds over multi-decade periods.

The Sea Change Thesis. In 2022, Marks wrote one of his most influential recent memos titled "Sea Change," arguing that the multi-decade declining-interest-rate environment had ended and that the next decade would feature higher rates, tighter credit, and different market dynamics. The framework has become widely adopted by credit and macro investors. The thesis has been validated by the post-2022 rate cycle.

The Larger Lesson. What Marks demonstrates is that consistent, high-quality communication can compound institutional credibility over decades. The memos are not optimized for short-term marketing or for raising fund capital. They are written to inform sophisticated investors and to develop a body of intellectual work. The cumulative effect has been to make Oaktree synonymous with disciplined credit investing in a way that competitors with similar track records but no equivalent communication output have not achieved.

For any investment manager who communicates with clients, the Marks example argues for genuine intellectual engagement over polished marketing copy. The discipline is harder than it appears. Most investment communication defaults to either client-pleasing optimism or fear-mongering pessimism. Marks has produced 35 years of careful, balanced, intellectually honest assessment. The trust that built is hard to replicate quickly.

For investors, the memos are recommended reading. They are available free at oaktreecapital.com. The cumulative reading time is approximately 50-60 hours. The educational value, by most accounts, exceeds most published investment textbooks.

Now go enjoy your Saturday. Maybe with a Marks memo.

Sources: - Howard Marks memos (oaktreecapital.com/insights/memos) - "The Most Important Thing" by Howard Marks (book, 2011) - "Mastering the Market Cycle" by Howard Marks (book, 2018) - Industry coverage: Bloomberg, Institutional Investor