When the market kills

After the market collapsed in 2008, stress killed people according to research by the Economic Policy Institute.  

We’ve long known that a financial shock causes immediate distress. Suit-clad men leaping from buildings were dismal hallmarks of the Great Depression, and soon after a major recession began in 2007, there were notable spikes in clinical depression, substance abuse and suicides...

Loss of control was front and center for the 26% of those in the survey who had endured a wealth shock. They were 50% more likely to have died during the period of the study, compared with participants whose savings remained intact. The researchers statistically controlled for other causes of mortality, such as ill health, job loss, insurance loss and marital breakdown.

Interestingly, women were more likely to have experienced a wealth shock than men, but they were not more likely to die as a result. They were, in short, more financially vulnerable but more resilient physiologically.

Markov Confirms ABCT

Greg Davies and Arnaud de Servigny offer a different take on diversification in their book Behavioral Investment Management: An Efficient Alternative to Modern Portfolio Theory. Chapter 6, “Representing Asset Return Dynamics in an Uncertain Environment was the most interesting chapter to me, and the one that adds confirmation to using the ABCT as a guide to timing the market. 

Modern portfolio theory tells investors to diversify their portfolios at least between two asset classes, stocks and bonds. A simplistic summary of the method is to use the statistical measure called standard deviation to assess the risks of asset classes and diversify according to risk. But in reality, advisers have found that a fixed ratio, say 70% stocks and 30% bonds, often works better without requiring as much work.