Sir Isaac Newton's South Sea Bubble Nightmare

In 1720 Isaac Newton had the good fortune to invest early in the South Sea Bubble, making a quick and decent profit. Satisfied with his gains, he exited before the bubble fully inflated. However, as he saw his friends amass incredible wealth, he couldn't resist re-entering the market. In an attempt to make up for lost time, he invested far more—some of it borrowed—and, unfortunately, bought in just before the bubble burst. As the stock plummeted, he lost almost everything, with his investment returning to roughly the value of his initial, smaller stake. It's said that Newton, reflecting on his experience, remarked, "I can calculate the movement of heavenly bodies but not the madness of men."

 

» There is nothing so disturbing to one's well-being and judgment as to see a friend get rich. « 

– Charles P. Kindleberger

 

Sir Isaac reportedly lost the equivalent of $4 to $5 million today, which amounted to almost the entirety of his investment in the South Sea Company. While this was a huge blow to his wealth, it did not leave him destitute, and he still maintained a fortune, though his stake in the company was essentially wiped out, losing around 90% of its value.

The Median Bull Cycle of US Stocks Lasts 32 Months │ Mark Ungewitter

The S&P 500 is up 68% over the 24-month period from October 2022 to October 2024. Since 1932, the median bull cycle has gained 73% over a 32-month span. We have counted 23 bull cycles since 1932. Of the 14 cycles that reached their two-year anniversary, six peaked in year three (43% of the time): 1953-1956, 1966-1968, 1970-1973, 1978-1980, 1987-1990, and 2016-2018.

 

The cyclical advance since October 2022 has reached its minimum targets, but is likely to extend further based on historical patterns. The average year-3 draw-up for all cases since 1949 (using similar labeling) is 12%, with a standard deviation of 9%, suggesting a peak for the S&P 500 of roughly 6,000 to 7,000 over the next eleven months. This is not a forecast, and it's somewhat unremarkable, but it may be useful for shaping expectations.

 

 

Reference:

Mark Ungewitter (November 18, 2024) - The Median Bull Cycle of US-Stocks Lasts 32 Months.