BTC stands for "buy to close." When an investor buys to close a position, they are purchasing an option or other security with the goal of closing out an existing short position. For example, if an investor has sold a call option (short call) and wants to close out that position, they can do so by buying back the call option (BTC).

BTO stands for "buy to open." When an investor buys to open a position, they are purchasing an option or other security with the goal of establishing a new long position. For example, if an investor wants to establish a long call position, they can do so by buying a call option (BTO).

a market characterized by rising prices and optimism about the future.

an option contract that gives the holder the right to buy the underlying asset at a specified price (the strike price) on or before a specified date (the expiration date).

a strategy in which an investor buys a put option to protect against potential losses in an underlying asset, while simultaneously selling a call option to offset the cost of the put option.

a measure of the sensitivity of the option's price to changes in the price of the underlying asset. A call option with a delta of 0.5 means that the option's price will increase by $0.50 for every $1 increase in the

a type of security that represents ownership in a corporation. Holders of common stock have the right to vote at shareholder meetings and are entitled to a share of the company's profits through

a distribution of a portion of a company's profits to its shareholders. Dividends are typically paid in cash, but may also be paid in the form of additional shares of stock.

the set of options contracts that expire on the same day each month.

the date on which the option contract expires and can no longer be exercised.

a measure of the rate of change of the option's delta with respect to changes in the price of the underlying asset. A high gamma indicates that the option's delta is changing rapidly, which can increase the risk

a statistical measure of the performance of a group of stocks, such as the S&P 500 or the Dow Jones Industrial Average.

the total number of option contracts that are currently outstanding and have not yet been settled or closed.

a financial derivative that represents a contract sold by one party (the option writer) to another party (the option holder). The contract gives the option holder the right, but not the obligation, to buy (in the case of a call option) or sell (in the case of a put option) an underlying asset at a specified price (the strike price) on or before a specified date (the expiration date).

The price of an option, which is the compensation the option writer receives for taking on the risk associated with the option contract.

an option contract that gives the holder the right to sell the underlying asset at a specified price (the strike price) on or before a specified date (the expiration date).

a measure of the sensitivity of the option's value to changes in the interest rate. A high rho means that the option's value is sensitive to changes in interest rates, which can be a risk for long options positions.

a strategy in which an investor simultaneously buys and sells options of the same type (either calls or puts) with different strike prices and/or expiration dates.

the process of evaluating a company's financial performance and prospects in order to determine the value of its stock.

a professional who performs stock analysis and makes recommendations about buying, selling, or holding a particular stock.

a corporate action in which a company repurchases some of its outstanding shares from the market. A stock buyback can be seen as a signal that the company's management believes the stock is undervalued.

a graphical representation of the price and volume of a stock over a specified period of time.

a financial market where stocks and other securities are bought and sold. Examples of stock exchanges include the New York Stock Exchange (NYSE) and the NASDAQ.

the current market value of a stock, as determined by the supply and demand for the stock in the market.

a corporate action in which a company increases the number of its outstanding shares by issuing more shares to current shareholders. A stock split is often accompanied by a proportional decrease in the price of each share.

a symbol used to uniquely identify publicly traded companies and their stocks. The ticker symbol is typically a combination of letters that represent the company's name or its stock exchange listing.

a strategy in which an investor buys both a call option and a put option with the same strike price and expiration date.

the specified price at which the underlying asset can be bought or sold if the option is exercised.

a measure of the rate of decline of the option's value over time as the option expiration approaches. A high theta means that the option is losing value quickly, which can be a risk for long options positions.

a measure of the sensitivity of the option's value to changes in the volatility of the underlying asset. A high vega means that the option's value is sensitive to changes in volatility, which can increase the risk of the position.

the number of option contracts that have been traded in a given period of time.