Nefarious Trading · Category 03

Options

Leveraged stock trading with a deadline. Bigger gains. Bigger risks. Only after stocks make sense.

Volume III · Six Chapters · Leverage With Time
OPTIONS 0.0 · Chapter 00 — Reference

What Do These Options Words Mean?

Options has its own vocabulary. Click any category to expand.

If a term feels confusing, come back to this page. The chapters use these words in context, but this is the quick lookup.

The Basics
Call
A contract that bets a stock will go up. Right to buy at a set price.
Put
A contract that bets a stock will go down. Right to sell at a set price.
Strike
The price the contract is locked to. A $50 call is locked to $50.
Expiration
The date the contract dies. After this, it's either worthless or, if it's in the money, exercised automatically into shares (index options like SPX settle in cash).
Premium
The price you pay for the contract. Listed per share — actual cost is premium × 100.
Contract
One options contract controls 100 shares of the underlying stock.
Underlying
The stock the option is based on. NVDA $150 call → NVDA is the underlying.
Long
Buying an option (paying premium). What most members do.
Short / Sell
Selling an option (collecting premium). Advanced. Your best case is keeping the premium; your worst case is far bigger. A naked (uncovered) short call has unlimited loss, and a naked short put can lose up to the strike × 100 per contract, minus the premium you collected.
Moneyness
In The Money (ITM)
A call where the stock is above the strike. A put where the stock is below the strike.
At The Money (ATM)
Strike equals current stock price. The middle ground.
Out Of The Money (OTM)
A call below the strike, or a put above. Cheaper, but needs a bigger move to pay off.
Intrinsic Value
What the option would be worth right now if you exercised it. ITM only.
Extrinsic Value
The "time premium" — everything beyond intrinsic value. Decays to zero by expiration.
The Greeks
Delta
How much the option moves for every $1 the stock moves. 0.50 delta = option gains $0.50 per $1 stock move.
Gamma
How fast delta changes. Higher gamma = delta accelerates as the stock moves.
Theta
How much value the option loses per day from time passing. The enemy of long-options buyers.
Vega
How sensitive the option is to changes in volatility. High vega = big swings on IV changes.
Rho
Sensitivity to interest rates. Almost never matters for short-term trades.
Volatility & Pricing
Implied Volatility (IV)
How much the market expects the stock to move. Higher IV = more expensive options.
IV Crush
When IV drops fast after a known event (earnings). Premium collapses overnight.
Open Interest
Number of open contracts at a strike. Higher = more liquidity.
Volume
Contracts traded today. Tells you if a strike is actively traded.
Spread (Bid-Ask)
Gap between buying and selling price. Wide spreads = bad fills.
Time & Strategy Types
LEAPS
"Long-Term Equity Anticipation Securities." Options expiring about 1–3 years out. Anything with 250+ days left we just call long-dated.
0DTE
"Zero Days To Expiration." Options on their last trading day. Fastest, riskiest. Every weekday on SPX, SPY, QQQ and IWM; on a single stock, only on the days that stock has an expiration.
DTE
"Days To Expiration." How many days until the contract expires.
Debit Spread
Buy one option and sell a cheaper one (same type and expiration, different strike) for a net cost. Caps both gain and loss.
Credit Spread
Sell one option, buy another. Collect premium upfront. Defined risk.
Exercise
Using the option. A call buys 100 shares per contract at the strike; a put sells 100 shares per contract at the strike. Happens automatically at expiration if the option is $0.01+ in the money.
Assignment
The seller's side of an exercise. A short call is forced to sell 100 shares per contract at the strike; a short put is forced to buy 100 shares per contract at the strike. On stock options it can happen early, any day before expiration.
American vs European
American-style options (US and Canadian stocks and ETFs) can be exercised any day up to expiration, so sellers can be assigned early. European-style options (most index options, like SPX) only exercise at expiration and settle in cash.
Approval Level
Your broker has to approve you for options, in levels. Basic levels cover buying calls and puts (and covered calls); spreads and naked selling need higher approval. The levels differ by broker.