Episode
We Asked a $1 Billion Quant Manager Why Concentration Isn't a Warning — and Small Caps Aren't Dead
- Podcast
- Excess Returns
- Published
- Jul 7, 2026
- Duration seconds
- 3445
- Processing state
not_requested
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Summary
Matt Zenz of Longview Research Partners joins Excess Returns to explain how evidence-based investing can help investors navigate AI excitement, market concentration, high valuations, IPO hype, factor investing and fixed income tax drag. We discuss why bubbles are hard to identify in real time, why diversification still matters, how valuation spreads shape expected returns, what AI capex does and does not tell us, and how investors can think about taxable bonds more efficiently. Longview Research Partners https://longviewresearchpartners.com/ Main topics covered Why evidence-based investing matters during bubble-like markets The emotional reality of holding risk assets through painful periods How to think about market concentration without jumping straight to bubble calls Why global diversification changes the mega-cap dominance story What high market valuations mean for financial planning and expected returns Why wide valuation spreads may create a better setup for value stocks What factor research says about AI capex and corporate investment How Longview builds a diversified factor strategy around discount rates Why implementation, trading flexibility and scale matter in factor investing The small cap premium debate, IPOs, fallen angels and survivorship bias Why AI may increase data mining risk in quantitative investing How fixed income tax drag can quietly reduce after-tax returns Timestamps 00:00 Why painful markets create future return premiums 04:00 Market concentration, AI winners and the value of diversification 09:40 How high valuations should influence financial planning 13:12 Why wide valuation spreads matter for value investors 14:01 What factor research says about AI capex 16:20 How Longview's EBI strategy looks for higher discount rates 18:58 Why Longview…