Psychology And Bad Market Timing.


wealthymatters.comEvery stock investor whether a technical or fundamental or value investor ultimately needs to take a call on whether he/she wishes to buy or sell at the price Mr. Market sets at any given time.How much an investment ultimately nets a person depends on the timing of the buy and sell decision and the actual price at which the transaction takes place,despite all the theories of averaging out and time in the market and reversion to the mean.

The following is a checklist of mental mistakes that may affect a person’s decision to buy or sell and cost a him/her dearly. The checklist is from Whitney Tilson’s presentation ‘How to Avoid – and Profit From – Manias,Bubbles and Investor Irrationality”

•Failing to Buy

–Status quo bias

–Regret aversion

–Choice paralysis

–Information overload

–Hope that stock will go down further (extrapolating recent past into the future; greed) or return to previous cheaper price (anchoring)

–Regret at not buying earlier (if stock has risen)

•Office Depot at $8 (vs. $6) Read more of this post

Tilson On Common Mental Mistakes


wealthymatters.comWealthymatters reader , Andy Cheung , in response to yesterday’s post : Some Assumptions To Check Before Investing has sent a  link  to an excellent article by Whitney Tilson on common mental mistakes humans persistently make while investing . I think the article should be essential reading for all people who hope to make it good by investing.I didn’t want to just leave the link hidden among the comments,so I have posted a copy of the list of mistakes people make here.The link below will take you to the complete explanation of these mistakes.

1)Overconfidence

2)Projecting the immediate past into the distant future

3)Herd-like behavior (social proof), driven by a desire to be part of the crowd or an assumption that the crowd is omniscient

4)Misunderstanding randomness; seeing patterns that don’t exist

5)Commitment and consistency bias

6)Fear of change, resulting in a strong bias for the status quo Read more of this post