Your options vocabulary, explained plainly
No finance-speak. No textbook definitions. If you've ever felt talked down to by a brokerage explainer, start here. Every term is written for someone who's never traded options before — and never will apologize for that.
Calls are how you bet that a stock will go up.
Puts are how you profit from falling stocks or protect existing holdings.
The relationship between strike price and current stock price determines whether an option is in, at, or out of the money.
Time is your enemy in options. The closer you get to expiration, the faster your option loses value.
Your premium is your maximum possible loss on a long option trade.
ITM options have intrinsic value and cost more — they are more likely to expire profitably but come with higher premiums.
OTM options are cheaper but require the stock to move in your direction to become profitable.
ATM options have the most time value and are often used when selling covered calls or straddles.
You never pay for intrinsic value — you either have it or you do not.
Time value decays as expiration approaches — the more you pay for time value, the more you are betting on movement.
Time decay is the silent killer of long option positions. A stock that barely moves can leave you with a worthless option.
Buying options when IV is high is like paying full price — you are paying for a lot of optimism that may not materialize.
Delta tells you how your option behaves like the stock. High delta = more stock-like. Low delta = more lottery-ticket-like.
Gamma is why short-dated options can swing violently — small moves in the stock cause big swings in delta, which amplifies the price change.
If you buy options before an earnings report (when IV spikes) and the stock barely moves after, vega crush will eat your position even if the direction was right.
In low-interest-rate environments, rho is barely worth tracking. In high-rate environments, it can meaningfully affect deep-in-the-money options.
High open interest means easier entry and exit — you are more likely to get a fair price when trading.
Volume confirms whether a price move is real or just noise. Low volume = thin market = wider spreads.
The bid is always lower than what you would pay to buy the same option. That gap is the market maker profit.
Always check the bid-ask spread before trading. Wide spreads mean you are giving up significant value just to get in.
Tight spreads save you money on entry and exit. Stick to options with spreads of $0.05–$0.10 or less.
Exercising converts your option to an actual stock position. Know what you are getting into before you do it.
Assignment risk is why you never sell naked options — always have the capital or shares to back it up.
An option priced at $3 actually costs $300 (3 × 100 shares). Always multiply the premium by 100 when calculating your actual cost.
Knowing your break-even tells you exactly what the stock needs to do for you to start profiting.
Covered calls generate income on stocks you already own. They are a common income strategy, not a direction bet.
Selling cash-secured puts is a way to buy a stock you want at a discount — you collect premium and might get assigned at a price you like.
A long call is the most direct way to bet that a stock goes up with limited downside.
A long put is how you profit from a stock falling or hedge existing positions against a downturn.
Knowing your max loss before entering a trade means you can size your position so a total loss does not hurt you.
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