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The Investor’s Sword and Shield | EP228
September 25, 2026

Global equity portfolio manager, Paul Moroz, speaks to a wide range of market topics, including what higher discount rates mean for equity valuations and the subtle shifts you might not see in the headlines but that absolutely matter. 
Stay tuned for the second half, where Paul discusses Millennium Prize math problems, humility, podcast proliferation, and entropy—for those seeking useful mental models for portfolio construction, the payoff is worthwhile.

Key Takeaways: 

  • Bond yields are the foundation of discount rates across all asset classes. The 10-year U.S. Treasury is above 5% and the Canadian 10-year is near 4%, with oil prices, AI CapEx borrowing, and government debt all contributing.
  • Equity markets have held up better than the discount rate math would predict. A 1% rise in the discount rate implies roughly a 15% decline, yet NVIDIA trades at 13 times next year's earnings, which points to multiples compressing while earnings grew.
  • The portfolio changes have been subtle rather than dramatic.
  • How humility is built into the investment process.
  • Entropy is a useful lens for investors. Left alone, a lawn fills with weeds and a podcast market fills with content, so most of what an investor sees each day is noise, and the job is putting energy into the part that matters.


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This blog post is solely intended for informational purposes and should not be construed as individualized investment advice, research, or a recommendation to buy, sell or hold specific securities. Information provided reflects current views based on data available at the time or writing and may change without notice. Mawer Investment Management Ltd. and/or its clients may hold positions in the securities mentioned, which may create a potential conflict of interest. While efforts are made to ensure accuracy, Mawer Investment Management Ltd. does not guarantee the completeness or accuracy of this information and disclaims liability for any reliance placed on the publication. Mawer Investment Management Ltd. is not liable for any damages arising out of, or in any way connected with, its use or misuse.
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This blog post is solely intended for informational purposes and should not be construed as individualized investment advice, research, or a recommendation to buy, sell or hold specific securities. Information provided reflects current views based on data available at the time or writing and may change without notice. Mawer Investment Management Ltd. and/or its clients may hold positions in the securities mentioned, which may create a potential conflict of interest. While efforts are made to ensure accuracy, Mawer Investment Management Ltd. does not guarantee the completeness or accuracy of this information and disclaims liability for any reliance placed on the publication. Mawer Investment Management Ltd. is not liable for any damages arising out of, or in any way connected with, its use or misuse.