nisiprius wrote: ↑Sat Aug 06, 2022 12:23 pm
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I would be curious to know how the Dow Jones Industrial average became the only one commonly cited, and how it became taken as a measure for "the stock market" as a whole.
I still don’t have a really good answer for you Nisiprius. But I have a better answer than when you raised the question last summer.
1. Dow Jones has a first mover advantage, dating back to 1885; and a powerful newspaper at their back. (I don’t understand Dow Theory to be the driver of the introduction, but rather, a later use of the data. The early indexes only or mostly had transportation (railroad) stocks). The goal was a simple index of whether the market went up or down yesterday that the reporter writing the “market action” column could point to.
2. Standard Statistics didn’t launch their index until the later 1920s, back dated to December 1925. And they published results in a quarterly bulletin, not a daily newspaper. Hathitrust.org has some early issues of the bulletin.
3. OTOH, as early as 1935, the Security and Exchange Commission research effort on mutual funds chose the Standard Statistics index as their benchmark for fund performance.
4. Until very recently, no Dow Jones index recorded total return. They were price indexes, designed to track daily movements in stock prices—eminently suitable for a daily newspaper, where annual total return was not an issue.
5. In 1946, the Wiesenberger mutual fund yearbooks (Morningstar before there was Morningstar) mentioned the Dow Jones composite but applied the S&P 90 as the index for benchmark returns to evaluate mutual fund performance 1937 - 1945. But by the 1950s, Wiesenberger was back to using the Dow Jones Composite.
6. After 1940, my understanding is that mutual funds had to file reports with the SEC showing performance against a benchmark. (Is that correct? Anyone have the relevant section of the Investment Company Act of 1940 to hand?) With no dividends on the Dow Jones average, Standard & Poor’s became the obvious choice for a mutual fund benchmark. (Standard Statistics merged with Poor’s Publishing in 1941). Henry Varnum Poor’s 1860 publication was perhaps the first book length publication of stock returns, and the Poor’s manuals dominated 19th century records of stock earnings and performance. But by 1941 Poor’s was deep into obsolescence, and Standard Statistics was young and aggressive—a business biography yet to be written.
7. So now it is the 1950s. Mutual fund ownership explodes; investors see the S&P index over and over in their annual reports. S&P is an index provider competing for revenue—an agent, not a passive bystander in this dogfight for recognition. The NY Times and other media competitors perhaps wanted an alternative to an index owned by a newspaper competitor. Slowly the landscape starts to shift.
8. The first Stocks Bonds Bills and Inflation account is published in 1976. It uses the S&P index to estimate long term returns.
9. By the 1980s, and the explosion of IRAs etc., and the mass diffusion of investing, academics are all in on the S&P index. There is still no total return metric available on the Dow Jones index.
10. By the 1990s, if a journalist, or a Bill Bernstein, wants to write a sentence like “Since 1926 stocks have …” then you have to report the S&P index. No alternative. No point in showing price appreciation without dividends, per Dow Jones.
11. In the 1960s Fisher and Lorie, founders of CRSP, could still report returns on an equal weight index, and defend the choice. Dow Jones price indexing was just another approach to index construction, not obviously bad or wrong or weird. The dominance of capitalization-weighting had not yet set. Once it did, the S&P index again became the preferred choice
12. As cap weighting became the intellectual standard, and once journalists began reporting one year and n-year total returns, there really was no alternative to the Standard & Poor’s index.
Thought experiment in 2022. You’ve been given a grant to conduct a poll of how investors keep track of whether their stocks are doing well. The poll question is,
[Qualifier: do you own stocks or mutual funds?] If yes:
How do you know whether your portfolio is having a good day or bad day? (Select the one indicator you most often reference during days the market is open)
A. Dow Jones index up or down
B. S&P 500 index up or down
C. Russell 3000 index up or down
D. Wilshire 5000 index up or down
E. I use a portfolio tracker showing my exact holdings and their change in value updated in real time
I think Dow Jones would still get a plurality among the general investor population (not Bogleheads) here in 2022…
They that read the footnotes, they shall be saved; but they that pass over the appendices, they shall wander forever.