
The Memo by Howard Marks Is It a Bubble?
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Dec 9, 2025 The discussion dives into whether there's a bubble in the booming field of AI. Marks outlines the psychology behind investment behaviors and critiques the prevalent lottery-ticket thinking among venture investors. He acknowledges AI's transformative potential while warning of speculative risks and uncertainties. Drawing parallels with past bubbles like the dot-com era, he emphasizes the need for prudent investment strategies. The conversation also addresses societal implications, highlighting potential job displacement and the challenges ahead.
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Productivity Gains May Not Raise Profits
- AI could raise productivity but not necessarily corporate profits.
- Efficiency gains may trigger price competition that erodes margins.
Circular Deals Create Skepticism
- Some AI deals look circular, raising skepticism about reported progress.
- Round-tripping between AI firms and suppliers can create misleading financial appearances.
Use Debt Only For Predictable Cash Flows
- Distinguish debt for predictable cash flows from equity for speculative growth.
- Avoid heavy leverage where outcomes are conjectural and asset lives uncertain.








