A Trader's Guide to John Murphy's Four Asset Classes

A Trader's Guide to John Murphy's Four Asset Classes

John Murphy's intermarket analysis is built on the foundation of four key asset classes: stocks, bonds, commodities, and currencies. Understanding the intricate relationships between these four pillars is the key to accessing a deeper understanding of the global financial markets. This is not about becoming an expert in each individual asset class; it is about understanding how they interact and influence one another. This is the essence of "big picture" thinking, a hallmark of Murphy's approach.

The Inverse Relationship Between Commodities and Bonds

Commodities and bonds generally have an inverse relationship. When commodity prices are rising, it is often a sign of inflation. To combat inflation, central banks will raise interest rates, which causes bond prices to fall. Conversely, when commodity prices are falling, it is often a sign of deflation. In this environment, central banks will lower interest rates, which causes bond prices to rise. A trader can use this relationship to their advantage. For example, if the CRB Index is breaking out to new highs, it is a bearish signal for bonds. A trader could look to short the TLT or to buy an inverse bond ETF.

The Inverse Relationship Between the US Dollar and Commodities

The US dollar and commodities also tend to have an inverse relationship. This is because most commodities are priced in US dollars. When the dollar is strong, it takes fewer dollars to buy a barrel of oil or a bushel of wheat. This puts downward pressure on commodity prices. Conversely, when the dollar is weak, it takes more dollars to buy commodities, which puts upward pressure on their prices. A trader can use this relationship to anticipate moves in the commodity markets. For example, if the DXY is breaking down, it is a bullish signal for commodities. A trader could look to buy a broad-based commodity ETF like the DBC.

The Direct Relationship Between Bonds and Stocks

Bonds and stocks often have a direct relationship, particularly during periods of economic growth. When the economy is strong, corporate earnings are rising, which is bullish for stocks. At the same time, a strong economy can lead to higher interest rates, which is bearish for bonds. However, during periods of economic stress, this relationship can break down. In a "risk-off" environment, both stocks and bonds can fall as investors flee to the safety of cash. It is important to be aware of the prevailing economic environment when analyzing the relationship between bonds and stocks.

Building a Real-Time Intermarket Dashboard

To effectively monitor these intermarket relationships, a trader should build a real-time dashboard with charts of the key asset classes. This dashboard should include the S&P 500 (SPY), the 20+ Year Treasury Bond ETF (TLT), the US Dollar Index (DXY), and a broad-based commodity ETF like the CRB Index. By overlaying these charts and looking for divergences and confirmations, a trader can gain a more holistic view of the market. For example, if the SPY is making new highs, but the TLT is also making new highs, it is a warning sign that the stock market rally may not be sustainable.

By understanding and applying John Murphy's four asset class model, a trader can move beyond single-market analysis and gain a more comprehensive understanding of the global financial markets. This is not a simple, mechanical system. It is a framework for thinking about the world and for making more informed trading decisions.