Before you trade an option, check the open interest. Tom Preston calls liquidity the most underrated factor in product selection and he learned the hard way by getting stuck in a Goldman Sachs options position he could not exit without giving up too much edge. SPY and SPX have thousands of contracts of open interest and bid-ask spreads as tight as a nickel on a $7,200 product. That is unprecedented and it is the result of zero DTE trading tightening the markets. Goldman Sachs has bid-ask spreads $2.70 wide. NDX has barely any open interest despite tracking the exact same index as QQQ. The lesson: always use QQQ over NDX for NASDAQ exposure and never enter an illiquid product without knowing you will pay slippage going in and coming out. 📊 tastylive: tastylive.com 📰 Get Tom's pre-market analysis every morning: tastylive.com/newsletters 📘 FREE Options Strategy Guide: tinyurl.com/bp9ms763 📱 Follow tastylive on X: x.com/tastyliveshow Chapters...