SI378: When Prices Stop Making Sense ft. Mark Rzepczynski
Top Traders Unplugged
Managing Multiple Types of Uncertainty
Mark lists many uncertainty types and gives examples (CME outage, data errors) that challenge models and inputs.
This episode examines markets through the lens of uncertainty rather than prediction. As the Federal Reserve delivers a rate cut amid dissent and conflicting signals, Alan and Mark explore what it means for systematic investors navigating noisy data, fragile liquidity and shifting regimes. The conversation moves from Fed credibility and term premia to bubbles, leverage and the limits of valuation in an environment shaped by narratives as much as fundamentals. Along the way, they return to a core question at the heart of systematic investing: when uncertainty rises and explanations multiply, should prices remain the final arbiter of risk, signal and portfolio design?
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Episode TimeStamps:
00:00 - Introduction to the Systematic Investor series
00:23 - Market context and recent CTA performance
02:41 - Initial reactions to the Fed decision and rate cut
03:12 - A messy Fed and the problem of dissenting signals
06:48 - Inflation, growth projections and policy uncertainty
08:31 - Signal versus noise in systematic trading models
11:22 - Employment data revisions and confidence in fundamentals
13:10 - Bond valuation, term premia and the question of safe assets
16:30 - Fiscal dominance, inflation risk and portfolio fragility
19:29 - Prices versus value and the limits of interpretation
22:47 - Narratives, reflexivity and momentum in markets
28:07 - Bubble dynamics, leverage and wealth effects
36:51 - Credit markets, AI investment and systemic risk
41:07 - Momentum, trend following and persistent market behavior
54:36 - Total portfolio approach and adaptive asset allocation
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