Dow Theory is an old but useful method for analyzing stock market trends through proof and confirmation. By applying the Dow Theory, investors can recognize primary trends and identify the six phases of a complete stock market cycle.
Dow Theory was created by Charles H. Dow (1851–1902), an American journalist and co-founder of Dow Jones and Company. After Charles Dow's death, William Peter Hamilton, Robert Rhea, and E. George Schaefer expressed Dow’s editorial as an integrated theory and gave birth to the Dow Theory.