The term long position refers to the practice of buying a security with the expectation that its value will increase over time. Long positions apply to stocks, commodities, currency as well as options.
Explanation
An investor can profit from both an increase in the value of a security as well as a decrease. When a trader expects the value of a security to increase over time, they are said to be taking a long position in it. A long trade will profit from an increase in the price of a security over time, while a short trade will profit from a decrease.
The term long is sometimes associated with the term buy. Going long is also considered a more conventional way of investing, since the trader is purchasing an asset they believe will be more valuable in the future.
When used in the context of options, buying a call option is said to be a long position because the trader now holds the right to buy a security. In the same way, the writer of a call option is taking a short position.
The term National Best Offer refers to the lowest available ask price, which is a consolidated value from all of the national stock exchanges. The National Best Offer is the lowest price sellers are willing to accept for a security such as a stock.
The term National Best Bid refers to the highest available bid price, which is a consolidated value from all of the national stock exchanges. The National Best Bid is the maximum price buyers are willing to pay for a security such as a stock.
The term market order refers to instructions sent to a broker to buy or sell a security immediately at the best available price. Since there are no restrictions on the selling or purchase price of the security, a market order is oftentimes immediately executed.
The term limit order refers to instructions sent to a broker to buy or sell securities at a specific price or better. Since a limit order is not a market order, there is no guarantee the transaction will occur.
The term day order refers to broker instructions to buy or sell a security that automatically expires at the end of the trading day if not executed. Unless specified by the investor, the default orders to buy and sell stocks at most brokerage houses are day orders.
The term Market-on-Open refers to broker instructions to buy or sell securities at their market price and at the beginning of the trading day. Unless trading is halted on a security, a Market-on-Open order will be executed once trading starts for the day.
The term Market-on-Close refers to broker instructions to buy or sell securities at their market price and at the end of the trading day. Unless trading is halted on a security, a Market-on-Close order will be executed at the very end of the trading day.
The term At-the-Close refers to broker instructions to buy or sell securities at the very end of the trading day. If an At-the-Close order cannot be executed in the final minutes of trading, then it will be canceled.
The term Time-in-Force refers to broker instructions that indicate how long an order will remain active before it expires or is executed. Time-in-Force orders provide investors with a mechanism to control the duration parameter for a trade.
The term trailing stop order refers to broker instructions that provide the investor with more flexibility than a fixed stop loss order. The stop loss price for a trailing stop order will track the upward movement of a security; remaining a specified percentage below its market price.
The term short position refers to the practice of selling a security with the expectation that its value will decrease over time. Short positions apply to stocks, commodities, currency as well as options.
The term primary peg order refers to those that follow the best bid, when buying a security, and the best offer, when selling a security. Primary peg orders allow traders to get the best possible price as a security moves within certain boundaries.
The term market peg order refers to those that follow the best bid, when selling a security, and the best offer, when buying a security. Market peg orders follow the opposite side of the market than primary peg orders.
The term alligator spread is used to describe a combination of puts and calls that are not profitable due to relatively high commissions. Alligator spread refers to the investor's position being "eaten alive" by the commissions.