the underlying

the underlying


"in theory, the ETF can always be sold. Buyers may be scarce, but there should be some price at which one will materialize. Of course, the price that buyer will pay might represent a discount from the NAV of the underlying bonds. In that case, a bank should be willing to buy the creation units at that discount from NAV and short the underlying bonds at the prices used to calculate the NAV, earning an arbitrage profit and causing the gap to close. But then we’re back to wondering about whether there will be a buyer for the bonds the bank wants to short, and at what price. Thus we can’t get away from depending on the liquidity of the underlying high yield bonds. The ETF can’t be more liquid than the underlying, and we know the underlying can become highly illiquid."

... as ETFs attract capital, they have to buy large amounts of these stocks, further fueling their rise.  Thus, in the current up-cycle, over-weighted, liquid, large-cap stocks have benefitted from forced buying on the part of passive vehicles, which don’t have the option to refrain from buying a stock just because its overpriced... Is Apple a safe stock or a stock that has performed well of late?  Is anyone thinking about the difference?




Like the tech stocks in 2000, this seeming perpetual motion machine is unlikely to work forever.  If funds ever flow out of equities and thus ETFs, what has been disproportionately bought will have to be disproportionately sold.  It’s not clear where index funds and ETFs will find buyers for their over-weighted, highly appreciated holdings if they have to sell in a crunch. 


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