Delta is the first Greek most people learn, and the definition is simple: how much an option's price moves when the stock moves a dollar. What most explanations skip is that delta does not stay put. It drifts as expiration approaches, and that changes what a position does. Using a put vertical on Microsoft, this shows how the same two strikes behave differently with a week left than with six, why in the money options drift toward one while out of the money options fall toward zero, and how to use that when picking an expiration. Education, not a recommendation. 📊 tastylive: https://www.tastylive.com/ 📰 Get Tom's pre-market analysis every morning: https://www.tastylive.com/newsletters 📘 FREE Options Strategy Guide: https://tinyurl.com/bp9ms763 📱 Follow tastylive on X: https://x.com/tastyliveshow Chapters 00:00 What delta actually measures 00:50 Delta as a risk metric 01:22 Reading deltas on the chain 02:27 Choosing a vertical to trade 03:09 Watching the delta change 05:02 The theory underneath it 06:19 What happens at expiration 07:29 What it means for traders 08:36 The trade off explained 09:48 Choosing based on conviction #tastylive #optionsgreeks #delta #optionstrading #verticalspreads #optionsforbeginners #optionseducation #expiration #tastytrade #trading tastylive is a real financial network, producing hours of live programming every day. Follow along as our experts navigate the markets, provide actionable trading insights, and teach you how to trade. With over 120 original segments, and over 25 personalities, we'll help you take your trading to the next level, whether you are new to trading or a seasoned veteran. tastylive content is created, produced, and provided solely by tastylive, Inc. ("tastylive") and is for informational and educational purposes only. It is not, nor is it intended to be, trading or investment advice or a recommendation that any security, futures contract, digital asset, other product, transaction, or investment strategy is suitable for any person. Trading securities, futures products, and digital assets involve risk and may result in a loss greater than the original amount invested. Investment information provided may not be appropriate for all investors and is provided without respect to individual investor financial sophistication, financial situation, investing time horizon or risk tolerance. Options, futures, and futures options are not suitable for all investors. Prior to trading securities, options, futures, or futures options, please read all applicable risk disclosures, including, but not limited to, the Characteristics and Risks of Standardized Options Disclosure and the Futures and Exchange Traded Options Risk Disclosure Statement found at https://tastytrade.com/disclosures/. Past performance is not indicative of future results. Performance is not presented net of all commissions, fees, and expenses. Multi-leg option strategies incur higher transaction costs than single leg trades as they involve multiple commission charges. Examples provided are for illustrative, informational, and educational purposes only and are not intended to be reflective of results you can expect to achieve. Supporting documentation for any claims, including claims made on behalf of options programs), comparisons, statistics, or other technical data, if applicable, will be supplied upon request. tastylive, through its content, financial programming or otherwise, does not provide investment or financial advice or make investment recommendations. tastylive is not a licensed financial adviser, registered investment adviser, or a registered broker-dealer.