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SI411: Why the Best Portfolios Are Built to Be Wrong ft. David Dredge & Richard Brennan
Description
The future isn’t hidden. It hasn’t been written yet. That idea anchors this foundational conversation between Dave Dredge, Richard Brennan and Niels Kaastrup-Larsen, on what risk really means in markets. They challenge the mathematics behind modern portfolio construction, exposing how calm conditions can conceal leverage, how diversification can fail when it matters most, and why familiar measures such as volatility and Sharpe ratios often miss the forces that lead to permanent loss. From path dependency and complex adaptive systems to trend following, convexity and the geometry of wealth, this episode offers a different framework for investing under uncertainty. For anyone responsible for preserving and compounding capital, this is essential listening. Because the strongest portfolio is not the one built around being right, but the one prepared to survive being wrong.
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Episode TimeStamps:
00:00 - Market review, July performance and introducing Dave Dredge
08:01 - Why markets are complex adaptive systems
18:49 - Price insensitive investors and the hidden drivers of markets
26:03 - How market participants create fat tails and volatility
31:38 - Where major market moves really come from
39:05 - Ergodicity and why sequence matters in investing
46:37 - The forest fire analogy for understanding financia