ETFs With The Most Liquid Options

(ETF.com) Options just got a lot more expensive. An escalation of the trade war between the U.S. and China sent stocks plunging and volatility surging on Monday, boosting the cost of options on stocks and ETFs.

The CBOE Volatility Index (VIX), which measures the “implied volatility” of S&P 500 Index options based on how much investors are willing to pay for them, jumped to nearly 25, its highest level since early January.

Implied volatility is a key determinant of an option’s price. A VIX of 25 means that S&P 500 Index options are roughly 65% more expensive than their five-year average and 45% more expensive than their 10-year average.

Options Market Active As Ever 

Expensive options are either a good thing or a bad thing, depending on who you ask. For investors looking to hedge their portfolios against a market decline using put options, or for speculators interested in betting on more gains in the stock market using call options, it will cost a pretty penny.

The opposite is the case for options sellers. They are receiving a solid premium for writing options contracts.

In any case, high volatility is not a bad thing for the options market—which remains as active as ever—particularly when it comes to ETFs. Below, we look at the 20 ETFs with the most liquid options markets.

SPY Trounces IVV

Just as is perennially the case, the SPDR S&P 500 ETF (SPY) has the most liquid options market of any ETF or even stock. The world's largest ETF, with $268 billion in assets under management (AUM), currently has 19.4 million options contracts outstanding—also called “open interest” (each options contract gives the owner the right to 100 shares of the underlying ETF; the right to buy in the case of calls; and the right to sell in the case of puts).

Bid/ask spreads on SPY options are often no more than a penny wide, minimizing transaction costs for those who want to hedge or speculate on the S&P 500. Here are the top five ETFs with the most liquid options. (For full list of the top 20, see table at the end of the story.)

Even though SPY is the largest ETF and has the most liquid options market, that correlation doesn't always hold true. There are plenty of big funds with illiquid or even nonexistent options markets.

Take the $183 billion iShares Core S&P 500 ETF (IVV). The second-largest ETF by assets only has total options open interest of 7,528. That's nothing for a fund of that size. Bid/ask spreads for IVV options are huge, making the fund a poor choice for options traders.

Some ETFs Punching Above Their Weight

After SPY, the iShares MSCI Emerging Markets ETF (EEM)has the deepest and most liquid options market. The fund boasts total open interest of 9.6 million contracts, well above No. 3 on the list, the Invesco QQQ Trust (QQQ), with open interest of 6.7 million contracts.

The iShares Russell 2000 ETF (IWM), the SPDR Gold Trust (GLD) and the iShares MSCI EAFE ETF (EFA) are a few other behemoths with active options markets.

Then there's also a number of ETFs on the list that are punching well above their weight. Those include the VanEck Vectors Semiconductor ETF (SMH), the United States Oil Fund (USO), the SPDR S&P Oil & Gas Exploration & Production ETF (XOP), the iShares MSCI Brazil ETF (EWZ), the iShares Silver Trust (SLV) and the iShares China Large-Cap ETF (FXI).

These ETFs have some of the most liquid options markets, even though they don't have a tremendous amount of assets. SMH, for example, only has AUM of $930 million, while XOP has $1.8 billion. That suggests these funds are popular with short-term traders—not a surprise considering that semiconductors, oil, Brazil, silver and China are among the most volatile areas of the markets.

Here's a full list of the top 20 ETFs with the most liquid options:

Source: Bloomberg; data as of Aug. 5, 2019