It is obvious that the performance of a stock last year or last month is no reason, per se, to either own it or to not own it now. It is obvious that an inability to "get even" in a security that has declined is of no importance. It is obvious that the inner warm glow that results from having held a winner last year is of no importance in making a decision as to whether it belongs in an optimum portfolio this year.
In my opinion, the entire field of investment management, involving hundreds of billions of dollars, would be more satisfactorily conducted if everyone had a good yardstick for measurement of ability and sensibly applied it.
Someone's sitting in the shade today because someone planted a tree a long time ago. The person sitting in the shade now should be grateful for the person who planted and tended that tree. That includes all those benefactors of humanity throughout history that created, invented, financed, produced, maintained and improved all that we enjoy today.
Ben's Mr. Market allegory may seem out-of-date in today's investment world, in which most professionals and academicians talk of efficient markets, dynamic hedging and betas. Their interest in such matters is understandable, since techniques shrouded in mystery clearly have value to the purveyor of investment advice. After all, what witch doctor has ever achieved fame and fortune by simply advising 'Take two aspirins'?
It's got to be the best intellectual exercise out there. You're seeing through new situations every ten minutes. In the stock market you don't base your decisions on what the market is doing, but on what you think is rational. Bridge is about weighing gain/loss ratios. You're doing calculations all the time.
If I got any good ideas out of that or I think they're good ideas, I'll be glad to contribute them but the system will probably overdo some other things.
SUPPOSE that an investor you admire and trust comes to you with an investment idea. This is a good one, he says enthusiastically. I'm in it, and I think you should be, too.
I'm not worried they're all about the investments we make. I mean, listen, this country - we've got $46,000 or $47,000 of GDP per capita. Now, we've done pretty darn well. We'll do better in the future.
If you aren't willing to own a stock for ten years, don't even think about owning it for ten minutes. Put together a portfolio of companies whose aggregate earnings march upward over the years, and so also will the portfolio's market value.