Now with more than $2 trillion in assets, the exchange-traded fund (ETF) has exploded onto the investment scene in the past 20 years, with the bulk of the growth occurring even more recently, built on the base of popular ETF features from their tax efficiency to relatively low cost to their ability to trade intra-day like a stock (and unlike a traditional mutual fund).
Yet ironically, in recent weeks the popular feature of being able to trade intra-day has turned into a liability instead, as market volatility has triggered a number of extreme (but short-term) situations where ETFs have traded at a significant discount to their intrinsic net asset value, in some cases as much as 30% below intraday NAV for an hour or few at a time.
For those advisors and investors who trade infrequently anyway, this kind of intra-day volatility may be a “non-issue” that was literally not even noticed by those who owned the ETF securities. Except those who panicked and sold at the market’s open based on overnight news. Or, unfortunately, those who were using Good ‘Til Cancelled (GTC) stop loss market orders.
In fact, the recent volatility of ETFs highlights that when it comes to using stop loss orders in particular, advisors and investors must be especially careful about how those trades are structured, in a world where ETFs with ‘temporary’ bouts of illiquidity can trade at dramatic discounts. At a minimum, those who wish to continue to use stop loss orders as a form of risk management may seriously want to consider using stop loss limit orders instead, with a gap between the stop loss and limit thresholds that is wide enough to still trigger a sale when the underlying NAV is falling, but reducing the risk of triggering a market sell order at the nadir of an ETF’s short-term “flash crash” price!