An excerpt from Warren Buffett’s 1957 letter that may be useful to think about in regards to current stock market levels:
In last year's letter to partners, I said the following:
My view of the general market level is that it is priced above intrinsic value. This view relates to blue-chip securities. This view, if accurate, carries with it the possibility of a substantial decline in all stock prices, both undervalued and otherwise. In any event I think the probability is very slight that current market levels will be thought of as cheap five years from now. Even a full-scale bear market, however, should not hurt the market value of our work-outs substantially.
If the general market were to return to an undervalued status our capital might be employed exclusively in general issues and perhaps some borrowed money would be used in this operation at that time. Conversely, if the market should go considerably higher our policy will be to reduce our general issues as profits present themselves and increase the work-out portfolio.
All of the above is not intended to imply that market analysis is foremost in my mind. Primary attention is given at all times to the detection of substantially undervalued securities.
The past year witnessed a moderate decline in stock prices. I stress the word "moderate" since casual reading of the press or conversing with those who have had only recent experience with stocks would tend to create an impression of a much greater decline. Actually, it appears to me that the decline in stock prices has been considerably less than the decline in corporate earning power under present business conditions. This means that the public is still very bullish on blue chip stocks and the general economic picture. I make no attempt to forecast either business or the stock market; the above is simply intended to dispel any notions that stocks have suffered any drastic decline or that the general market, is at a low level. I still consider the general market to be priced on the high side based on long term investment value.