I've been publishing a review of the S&P500 and all its nuances every month for over 3 years. This is data that I personally use for my own investments and as my knowledge has grown so too has the content posted but the format has remained largely unchanged. I've received no complaints but to me the format has now grown a little unwieldy, not as clear as it could be and probably most importantly I've become a little bored with it. Last month’s review can be found here. I've therefore spent some time reformatting the charts, adding some more relevant historical content and hopefully arranging the content into something a little more logical. I hope it works for you.
S&P500 Price
At market close on Friday the S&P500 was Priced at 1,555. That is a rise of 0.3% when compared with 1,551, which is the average closing Price of each trading day last month. It is 12.2% above last year’s April monthly Price of 1,386. Note that for this index I only look at monthly average Prices as opposed to hourly or daily as I'm a very long term investor and just don’t need the noise associated with more granularity. I’ll leave that for the traders out there.We can then look at how this Price compares to history which is shown in the chart below.
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This is a similar chart to that which you will see in many places within the mainstream media when displayed over a long term. It looks sensational and in my opinion isn’t very helpful. Let’s therefore adjust it to the chart below where I try to show what is really going on with Prices. I make two adjustments:
- Correct the chart for the devaluation of the US Dollar through inflation. This unfortunately means, unlike the mainstream media in recent times, I can’t report that the S&P500 has reached new all time highs as in real terms it is still 22.5% below the Real high reached in August 2000.
- Show the Pricing on a logarithmic scale as opposed to a linear one. By using this scale percentage changes in price appear the same. For example let’s say we have two historic prices of 10 and 100. If they both increase in price by 10% then they increase by 1 and 10 respectively. On a linear scale it would appear as though the second has increased by a factor of 10 more than the first where on a logarithmic scale they will appear to have changes the same. Less sensational but more correct.
Click to enlarge