Now how do ETFs ever get reconciled with their underlying assets?
I'd assume that, at least with the large ETFs, that arbitrage and liquidity keeps them really close to par value (like within bid/ask/fees)? I don't know if there are any small ETFs.
For Closed End Funds we sometimes hear of them trading above/below par. Again, assumption on my part, but I think that is due to the cost of going in/out, and because they are priced at EOD, an arbitrager can't be certain they will get out at that same delta. And I'm always curious about someone touting a CEF as a bargain because it is trading below par. Well, why is it below par in the first place, and how can you know that will change? There must be a reason for it.
-ERD50
In order for arbitrage to work, there has to be a mechanism for it to happen. This mechanism exists with ETFs, but not with closed end funds. I will explain further, but first let's go back a bit in time.
The predecessors of ETFs are the "holders". HOLDRs (Holding Company Depository Receipts) were created in the late 90s by Merrill Lynch. I used to own shares of several HOLDRs in those days. HOLDRs were usually sectored funds, and traded only in round lots of 100 shares. And the constituents were also owned in whole shares and not fractional shares.
For example, a 100-share lot of a pharmaceutical HOLDR might consist of 10 shares of Merk, 12 shares of Johnson & Johnson, 8 shares of Pfizer, etc... An investor who owned this pharmaceutical HOLDR was also a direct owner of the contituent companies. Thus, I would receive company reports and have voting rights of all my shares in these companies. The above is not true with ETFs, nor with mutual funds.
The advantage of the HOLDRs is the same as with the current ETFs. You get diversification with a single purchase, while overweighing a sector that you think has a better prospect than the entire market. In return for the convenience, you pay a fee to the HOLDR manager, and this fee is deducted from the dividends paid by the constituent companies. This is not any different than with ETFs or MFs.
However, the bookkeeping of a HOLDR was more cumbersome and more costly, plus the requirement to trade in 100-share round lots kept out small investors. Thus, the HOLDRs were gradually phased out in favor of the ETFs.
In order to ensure that a HOLDR was valued at NAV (net asset value), the HOLDR manager permitted purchase and redeem of the HOLDR shares with in-kind trades. For example, if somehow a pharmaceutical HOLDR got traded at a discount, meaning at a lower price than the sum of its parts. Anybody could buy 100 shares of this HOLDR, then demanded the HOLDR manager to deliver the break-down, meaning delivery of the 10 shares of Merk, 12 shares of J&J, etc... He then sold the individual parts for more money, and pocketed the difference.
Conversely, suppose this pharmaceutical HOLDR got traded at a premium, meaning at a higher price than warranted by the sum of its parts. Anybody could gather up the 10 shares of Merk, 12 shares of J&J, etc..., then delivered this lot to the HOLDR manager in exchange of 100 HOLDR shares. He could then sell these 100 HOLDR shares on the open market at a higher price for a profit.
I don't know if this in-kind purchase and redeem transaction ever happened, but supposedly just the allowance of it means any mispricing would be detected by several investment houses, who would seize the chance to make money and drive the price difference back to zero. Thus, the HOLDR pricing is forced to follow the NAV price by deterrence.
The same mechanism exists with ETFs, by permitting in-kind trades to ensure price tracking via arbitrage.
However, no such arbitrage is possible with closed end funds. Hence, closed end funds often trade at a persistent discount to their NAV value. The discount is there, but how do you get money out of it? The only way you could to unlock the value is to take over the fund and close it down, then break it down into its parts and sell the individual pieces. This is how corporate raiders often take over a company and sell it in pieces.
Why don't closed end funds trade at a premium? I guess lack of popularity and liquidity of the closed end funds make them not in high demand.