Good reads from around the Web.
The question of how many active investors and financial intermediaries are needed to make the market go around is becoming less theoretical as passive investing’s popularity grows each year.
This week the blog Philosophical Economics made a great – if theory-heavy – stab at answering it.
The article introduces us to the economy of Indexville – a land where everyone is a passive investor (and Monevator is an even more popular site than Buzzfeed).
The first hurdle for successful equity investing in Indexville is company valuation – in our world a free ride enjoyed by passive investors as a consequence of active investors competing for bargains.
The author’s conclusion is that perhaps 20,000 analysts would be sufficient in a passive-only world to value the equivalent of the entire US stock market.
That’s a cheap wage bill, the piece suggests, compared to the total cost of today’s actively managed funds, where the equivalent fees might be 25-100 times higher.
A bigger problem comes with providing liquidity to investors who want to buy or sell their passive funds, instead of just receiving dividends.
I’ll leave you to read the article for that long discussion.
The author concludes that even in the fantasy-land of Indexville, some percentage of investors would need to be active – but maybe as few as 5%.
Those active investors would be playing a zero-sum game in any speculation.
But by providing liquidity to passive investors, they would also in aggregate earn a small additional return over passives – effectively a fee charged for providing liquidity, and for taking on the risks of doing so.
Axe-wielding passive investing maniacs
Like me you probably won’t agree with every assumption made in the piece, but it’s a fascinating discussion – albeit one for finance nerds, really – and it strips back our bloated financial markets to their bare bones.
It will be fascinating to look back in 20-30 years to see whether the financial services industry did get significantly cut down to size.



