Excess Returns
Excess Returns

The Stagflation Regime | Aahan Menon on What Works When Stocks and Bonds Don’t

This episode of Excess Returns features Aahan Menon of Prometheus Research breaking down the growing risk of an inflation shock driven by energy markets and what it means for investors. The discussion explores how a potential shift toward stagflation could challenge traditional stock and bond portfo

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Executive Summary: The discussion argues that the Middle East conflict and oil shock may push the economy into a stagflationary regime where inflation stays elevated, growth slows, and traditional stock-bond portfolios struggle. The guest favors commodities, especially energy, and sees equities and Treasuries as less attractive until inflation cools. He also outlines systematic, transparent portfolio tools built around trend, risk parity, and macro signals.

Main Topics: Inflation shock and stagflation risk (Priority: 5/5): The guest frames the Iran-related oil spike as a major exogenous inflation shock that could bleed into broader prices, weaken demand, and create a stagflationary backdrop. Asset-class expected returns (Priority: 5/5): Using forward earnings yields, yield curves, commodity term structure, and FX rate differentials, the guest argues commodities and FX have better expected returns than equities or bonds right now. Treasury positioning under inflation pressure (Priority: 4/5): A simple rule is proposed: avoid Treasuries until the daily CPI nowcast falls below 2%, because oil-driven inflation tends to push yields higher before demand destruction eventually helps bonds. Trend-following portfolio design (Priority: 4/5): The guest explains a free trend program built from stocks, bonds, gold, and Bitcoin using risk parity plus one-month and six-month trend filters, with risk scaled by signal breadth. Systematic investing in fast-moving markets (Priority: 4/5): The conversation highlights how news shocks compress correlations and challenge systematic strategies, forcing managers to think about risk budgets, stress tests, and whether to reduce exposure. Integrated portfolio construction (Priority: 3/5): The firm’s broader portfolio combines equity beta timing, sector rotation, Treasury overlays, crisis protection, and an energy futures overlay to handle a more volatile macro regime.

Key Arguments: The oil shock is not just a temporary disruption; if sustained, it can create demand destruction and a slowdown or contraction. The economy was already mixed before the war: labor market weakening, output strong, consumer spending supported by savings drawdown, and AI capex boosting GDP. Equities and bonds are poorly suited to a sustained inflationary regime, while commodities and gold tend to benefit. Commodities are unintuitive but valuable during supply shocks because backwardation and carry improve when spot prices rise sharply. Expected returns should be estimated from current market structure, not just historical averages, because asset-class opportunities change by regime. Treasuries should not be owned mechanically during an inflation shock; the better entry point is when inflation nowcasts fall below the Fed’s 2% target. Trend following is best made transparent and simple; the guest favors a long-only, risk-parity, multi-speed trend framework that investors can actually stick with. In highly news-driven markets, systematic managers may need to reduce risk budgets even if they normally avoid discretion. A diversified portfolio should include commodity exposure and a realistic assessment of risk tolerance, not just a fixed 60/40 allocation.

Data Points: CPI nowcast (month-to-month annualized): in the nines - Guest says current daily inflation estimates are running around 9% annualized on a monthly basis due to energy prices. Historical stagflation window: 1965 to 1985 - Used as the main example of a sustained inflationary regime where equities and bonds struggled and commodities/gold outperformed. Trend program lookbacks: 1 month and 6 months - Two-speed trend filter used in the free trend-following portfolio. Trend signal weights: 50% / 50% / 100% / 0% - If one trend signal is bullish and the other bearish, position is 50%; both bullish is 100%; both bearish is 0%. Trend program max target volatility: 15% - Portfolio risk is scaled up or down based on how many assets have positive trend signals. Integrated program equity down-day Sharpe ratio: close to 2 - Guest says the crisis protection sleeve has a high conditional Sharpe ratio on equity down days. Treasury rule threshold: 2% CPI - Rule of thumb: own Treasuries only when the CPI nowcast is below 2%. Portfolio risk allocation: about 90% cash - Current trend portfolio is mostly in cash because multiple asset signals have turned off. Asset-class ranking: energy, FX, fixed income, equities - Guest ranks expected returns from most attractive to least attractive.

Pivotal Quotes: "we could be looking at a situation where we have sustained inflationary pressures coming from the energy complex and bleeding into other sectors of the economy" — Ahan: Opening framing of the macro risk posed by the oil shock and its spillover effects. "the consensus expectations have just gone so far so fast relative to what we think the economy can deliver that you have this window of vulnerability" — Ahan: Explains why earnings and market expectations may be too optimistic even before the Iran shock. "until our CPI now cost breaks below 2%, don't own any treasuries" — Ahan: Simple rule of thumb for Treasury allocation during an inflation shock.

Implications: Listeners should expect a more inflationary, volatile regime where commodities and disciplined risk management matter more than traditional stock-bond diversification. The episode argues for flexible, systematic portfolios that can adapt to shocks and avoid assuming Treasuries always hedge risk.

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Excess Returns is dedicated to making you a better long-term investor and making complex investing topics understandable. Join Jack Forehand, Justin Carbonneau and Matt Zeigler as they sit down with some of the most interesting names in finance to discuss topics like macroeconomics, value investing, factor investing, and more.

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