Evidence Based Factor Investing | Matt Zenz

In this episode of Excess Returns, we sit down with Matt Zenz of Longview Research Partners to explore factor investing, evidence-based strategies, and the challenges and opportunities in today’s markets. Matt shares insights from his engineering background, his time at DFA, and his current work running the Longview Advantage ETF (EBI). We cover the nuances of value, momentum, size, implementation, and how investors can think more effectively about long-term returns.Topics covered:Matt’s journey from engineering to investingLessons learned at DFA and the foundation of evidence-based investingDefining factors and what makes them credibleThe role of value, momentum, quality, and size in portfoliosThe challenges of intangibles and redefining valueLarge cap tech dominance, mean reversion, and whether the world has changedFactor timing, valuation spreads, and Cliff Asness’ “sin” frameworkHow momentum can be integrated with value tiltsPortfolio construction: combining factors vs sleeve approachesImplementation challenges for large vs small managersHow Longview manages liquidity, turnover, and trading costsThe potential impact of AI on factor investingFuture opportunities in implementation alpha and ETF designMatt’s biggest investing belief most peers disagree withThe key lesson he would teach the average investorTimestamps:00:00 Value vs returns and factor investing basics03:00 From engineering and Boeing to investing06:15 Time at DFA and lessons in evidence-based investing07:30 What evidence-based investing really means09:25 Defining factors and what makes them valid12:00 Using value, profitability, size, and momentum16:00 Large cap tech dominance and future returns18:00 Mean reversion and whether the world has changed20:00 How long does value need to struggle before it’s “dead”?22:30 Should value be redefined for intangibles?25:30 Intangibles, R&D, and why adjustments add noise27:00 Value’s performance across economic cycles and migration30:00 Interest rates, growth, and value performance32:00 Factor timing and valuation spreads34:15 The role of momentum in timing and implementation35:00 How Longview applies passive-aggressive tilts36:30 Combining factors vs sleeve approaches39:00 How momentum is used in practice41:30 Factor migration and average holding periods43:00 The size premium and whether it still exists44:30 The benefits of being nimble vs large fund families47:30 Liquidity challenges in small cap value52:00 The role of AI in investing54:00 Where implementation adds the most alpha55:30 One belief Matt holds that peers may disagree with57:20 The one lesson for the average investor

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