AS January goes, so goes the entire market year. That's probably the best-known aphorism from the Stock Trader's Almanac, an annual compilation of dates, statistics and advice for investors first published in 1968 by Yale Hirsch.
A prolific author of pithy investment advice, Hirsch also created the strategy often referred to as "Sell in May and go away," and he identified a year-end seasonal "Santa Claus" rally.
His so-called January barometer posits that a decline in the Standard & Poor's 500 index in January means that major averages will also end that calendar year with a decline, and vice versa if stocks rise during the month.
Given the global plunge in stock market prices this week - US and...