
Posted in
Options Trading
By: Tom Gentile
on May 7th, 2025
In Options Trading What is the Best Way to Assess Liquidity?
In the late 1990s and early 2000s, I co-founded one of the world’s largest options education companies with several partners, including George Fontanils. We took our company global.
We were doing options education ‘live event’ seminars all over the U.S. and Canada. We even held these sessions in the UK, Singapore, and Australia.
It was a very wonderful time to be able to meet people the world dover and see that they all shared a common interest and that was to better their financial situation through the skill set of learning to trade options. It was very humbling to be able to serve in that capacity and even though I educate on a smaller scale it is still a calling, if you will, I still am grateful to be able to serve.
Many students had a question regarding options trading, and it was even just recently asked in one of my online sessions. What is the best indicator of liquidity for options.
Options Liquidity
What the question pertains to with Options liquidity is how easy can traders buy or sell options contracts without significantly impacting the contract’s market price.
Here are the three primary means to assess options liquidity.
Daily Volume – This is the number of times a specific option contract was traded in a day. A Higher daily volume indicates better liquidity.
Open Interest – This is the total number of outstanding option contracts that have not been closed or exercised. A higher open interest suggests greater liquidity.
Bid-Ask Spread – A narrow bid-ask spread indicates a liquid market, while a wider spread suggests lower liquidity
What I and my colleagues taught is the BEST indication of liquidity is this last one, a tight Bid-Ask Spread.
Think about it options are priced with a bid and an ask and the difference between the two is called the spread. I want to cover the spread and then some as quickly as possible and with the least move possible required in the security.
If you have an option that is priced $2.20 x $3.00, that means the option has to move +$0.80 just to be break even. Where as an option priced at $2.00 x $2.03 only needs to increase by $0.03 to break even.
Options ‘Slippage’
I also like to trade options with the lowest percentage slippage possible.
Options slippage is defined as the difference between the expected price of a trade and the actual price at which the trade is executed/filled.
The formula for slippage is:
Slippage = Execution Price − Expected Price
__________________________________________ x 100
Expected Price
I like options with a 1% or less slippage. The lower the better giving me a better chance at getting profitable quicker.
Check with your broker if their options trading platform provides a slippage calculation on options like my tools / software at www.tomsoptiontool.com does.
The Reason for Finding the Best Liquidity
Knowing an options liquidity is especially important to me and why I teach it is because liquidity in options trading affects a trader’s ability to execute transactions efficiently and at favorable prices.
Higher and better liquidity makes for ease of Entry and Exit.
In a liquid market, traders can buy or sell options contracts without causing too much of a price fluctuation. This in turn pretty much ensures trades can be executed close to fair market value.
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To your success,
— Tom Gentile
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Toms Option Tools scan the markets for bullish and bearish trade opportunities using our proprietary scans and strategy algorithms. TTR Darknet finds bullish entries based on triple stack channel collisions. Money Calendar identifies seasonal patterns with at least 90% accuracy looking back 10 years. Weekly Cash Clock finds short term opportunities that last a week on average. Microcurrency Trader applies Darknet technology and moving averages to cryptocurrencies. Velocity Trader utilizes volume spike and Velocity indicators on custom stock lists. Quantum Scripts scans the markets for momentum acceleration signals and employs Quantum noise filters. Optimal Trader finds directional pre-earnings opportunities that are optimized for entry date, stock movement, and volatility surge. My Trades tracks the profit/loss of your trades, displays stock charts and risk graphs, creates new trades, and edits existing trades. Morning Report provides top 10 option rankings in 6 categories each day.
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Stock and options trading has large potential rewards, but also large potential risk.
You must be aware of the risks and be willing to accept them in order to invest in the stock and options market. Do not trade with money you cannot afford to lose.
This is neither an offer to buy/sell/ or recommend a particular stock or option.
Hypothetical or simulated performance results have certain inherent limitations. Unlike an actual performance record, simulated results do not represent actual trading. Also, since the trades have not been actually executed, the results may have under or overcompensated for the impact, if any, of certain market factors, such as lack of liquidity. Simulated trading programs in general are also subject to the fact that they are designed with hindsight.
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