What Is Intermarket Analysis?
Intermarket analysis studies the relationships between different asset classes — equities, fixed income, commodities, and foreign exchange — to understand how capital flows and macroeconomic forces shape markets simultaneously. Rather than viewing a stock chart in isolation, this approach treats the financial system as an interconnected web where a move in one market often signals or anticipates a move in another. The framework, popularized by John Murphy in the 1990s, remains a practical lens for traders and portfolio managers trying to read the broader economic picture.
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At its core, intermarket analysis rests on a simple premise: money is fungible. When investors rotate out of equities and into bonds, or out of a weakening currency and into commodities, those flows leave telltale signatures across multiple charts. Recognizing these signatures early can help identify trend changes before they fully register in any single market.
The Core Intermarket Relationships
Several relationships form the backbone of intermarket analysis. Understanding them provides a checklist for interpreting market behavior.
- Stocks and Bonds: Typically positively correlated in risk-on environments, but often inversely related during inflation shocks or rate-hiking cycles. When yields rise sharply, equities frequently decline as discount rates increase.
- Stocks and Commodities: Often move together during global growth phases, since corporate earnings benefit from rising prices in energy, metals, and agricultural goods. During recessions or demand contractions, the correlation can weaken or flip.
- Bonds and Commodities: Generally inversely related. Rising commodity prices fuel inflation expectations, which pressure bond prices. When commodities fall, bonds often rally on deflation or growth concerns.
- Commodities and Currencies: Commodity-linked currencies like the Australian dollar, Canadian dollar, and Brazilian real tend to rise with commodity prices. The U.S. dollar frequently moves inversely to commodities because raw materials are priced in dollars.
- Stocks and the U.S. Dollar: A stronger dollar tends to pressure multinational earnings and can signal risk-off sentiment, while a weaker dollar often supports equities, particularly export-oriented sectors.
How to Apply Intermarket Analysis
Practitioners use intermarket analysis as a context-setting tool rather than a standalone trading system. A common workflow begins with identifying the dominant macro regime — expansion, stagflation, recession, or disinflation — and then checking whether asset class behavior aligns with historical patterns for that regime. Divergences are where the real insight lives. For example, if stocks are rallying while bonds are also rallying and commodities are falling, the market may be pricing in a soft-landing scenario that differs from a standard growth impulse.
Technical tools like relative strength comparisons, correlation matrices, and ratio charts (such as the equities-to-bonds ratio or the dollar index against commodity prices) help quantify these relationships. Keeping a simple watchlist of key cross-asset ratios can turn abstract intermarket theory into actionable monitoring.
Limitations and Common Pitfalls
Intermarket relationships are not stable over time. Structural changes — central bank balance sheet policies, the growth of passive investing, deglobalization, or energy transitions — can alter historical correlations. A relationship that held for decades may break down during a regime shift, and relying on outdated assumptions can produce false signals. Furthermore, correlations can increase during crises, making it difficult to distinguish genuine regime information from panic-driven co-movement.
Another pitfall is overcomplication. Tracking too many cross-asset ratios without a clear thesis can lead to analysis paralysis. The most effective use of intermarket analysis narrows the focus to the relationships most relevant to the current market environment and the specific portfolio being managed.
Why Intermarket Analysis Matters Now
In an era of aggressive monetary policy shifts and fragmented global growth, no single asset class tells the full story. Bond yields, commodity spikes, currency moves, and equity valuations all interact in ways that a single-chart view misses. Intermarket analysis provides the connective tissue for making sense of that complexity, offering a disciplined way to read the market's macro weather system rather than just its individual forecasts.