, Columnist
Dow Theory Sends Concerning Signal on Trade Tensions
Investors' jitters are pushing stocks lower.
Holding its own.
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The Dow Theory was one of the first attempts to decode stock market price signals and make them useful to traders and investors.
The idea is straightforward: Stock price trends should show logical and fundamental consistency across industries. Volume confirms price. And, most important, equity prices move in long-term patterns. More than 100 years after the theory was developed by Charles H. Dow, traders still adhere to its basic tenets.