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DefinitionAug 16, 2026

A.M. vs P.M. settlement for index options

A.M. and P.M. settlement describe whether an index option’s final settlement value is based on opening or closing prices. In practice, that changes when trading stops and how the final settlement level is determined.

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DefinitionAug 16, 2026

American style option

An American style option can be exercised on any business day up to and including expiration. In this article, that matters mainly for many equity options, where early exercise can lead to share delivery before expiry.

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DefinitionAug 16, 2026

American-Style vs European-Style Options

American-style options may be exercised before expiry, while European-style options are generally exercisable only on expiration. The distinction matters because timing of exercise changes how assignment and expiry risk should be managed.

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DefinitionAug 16, 2026

American-style versus European-style exercise

American-style options can be exercised before expiry, while European-style options can only be exercised at expiry. The distinction matters here because the article’s framework is built around standard U.S. equity options, which are generally American-style.

optionsexercise-styleamerican-styleOpen definition
DefinitionAug 16, 2026

Asset Allocation Explained

Asset allocation is the process of deciding how a portfolio is divided across different asset types. In the article, it is a core investing concept rather than a short-term trading concern.

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DefinitionAug 16, 2026

Assignment and exercise

Exercise is the holder’s decision to use an option right, while assignment is the obligation imposed on the short option writer when that happens. In this article, both matter because assignment risk can change whether a strategy is suitable before entry.

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DefinitionAug 16, 2026

Automatic Exercise at Expiration

Automatic exercise at expiration refers to standard procedures under which expiring in-the-money options are generally exercised unless contrary instructions move through the clearing chain. In the article, this is one reason to prefer pre-written exit rules and not rely on expiry handling as the main exit method.

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DefinitionAug 16, 2026

Bid, Ask, and Spread Explained

The bid is the highest price a buyer is offering, the ask is the lowest price a seller is offering, and the spread is the difference between them. The article treats that spread as a direct trading friction.

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DefinitionAug 16, 2026

Bid, ask, and mid price in options

The bid is the highest displayed buying price, the ask is the lowest displayed selling price, and the mid price is the simple midpoint between them. In options, these figures are useful reference points, but the mid is not a guaranteed execution level.

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DefinitionAug 16, 2026

Bid-Ask Spread Definition

The bid-ask spread is the difference between quoted buy and sell prices and is the article’s first filter for tradable liquidity. It matters because spread cost can materially change execution quality and the economics of the trade.

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DefinitionAug 16, 2026

Bid-Ask Spread Explained

The bid-ask spread is the difference between the highest bid and the lowest ask. It matters because it is a practical trading cost and often signals how easy or hard it may be to trade efficiently.

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DefinitionAug 16, 2026

Bid-ask spread, volume, and open interest

Bid-ask spread, volume, and open interest are practical liquidity measures used to judge whether an option chain is tradable. The article treats them as exclusion checks, not optional refinements.

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DefinitionAug 16, 2026

Break-even, maximum profit, and maximum loss

Break-even, maximum profit, and maximum loss are the core payoff measures used to compare option strategies in cash terms. The framework relies on them to separate defined-risk structures from stock-linked ones.

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DefinitionAug 16, 2026

Buying power and cash securing basics

Buying power and cash securing refer to the capital a strategy requires and the funds that must be set aside to support assignment or maximum loss. They are central to this framework because capital fit is one of the main exclusion checks.

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DefinitionAug 16, 2026

CFD Margin and Close-Out Rules

CFD margin is collateral posted to support leveraged exposure without owning the underlying asset. Retail close-out rules can require positions to be closed when equity falls too far relative to required protection.

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DefinitionAug 16, 2026

Call Option Definition

A call option gives exposure to upside in the underlying, while the exact obligation depends on whether the position is long or short and on the product terms. In the article, calls appear both as directional tools and as part of covered calls and debit spreads.

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DefinitionAug 16, 2026

Cash Account vs Margin Account

A cash account requires purchases to be paid for in full with available cash, while a margin account allows broker credit and broader collateral rights. The difference matters for both leverage and operational control.

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DefinitionAug 16, 2026

Cash settlement vs physical delivery

Cash settlement resolves an option through a cash amount, while physical delivery transfers the underlying instrument. The distinction is central here because equities, indices and futures options do not all settle in the same way.

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DefinitionAug 16, 2026

Cash-Secured Put Definition

A cash-secured put is a short put position backed by enough cash to buy the shares if assignment happens. In the playbook, it fits when the investor is willing to buy stock lower while receiving premium.

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DefinitionAug 16, 2026

Cash-secured put definition and payoff

A cash-secured put is a short put backed by enough cash to buy 100 shares if assigned. It collects premium but still carries substantial stock-like downside after assignment.

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