55-day Rule

Both the Crash of ‘29 and the Crash of ‘87 – two of the worst days in market history – occurred exactly 55 calendar days after the market had made an new all-time high. In other words, 55 days after the top, people are getting anxious. For those who believe in this theory, rather than coincidences, it supposedly has something to do with Fibonacci and/or biorhythms – who knows?

Past performance is not necessarily indicative of future results.
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55-day Rule

The 55-Day Phenomenon

By Lawrence G. McMillan