摘要: A set of rules for accomplishing a task in a certain number of steps. One common example is a recipe,[阅读全文:]
摘要: A description of the price range of a stock on a particularly volatile day of trading. Wide-ranging days occur when the high and low prices of a stock are much farther apart than they were the day bef[阅读全文:]
摘要: A ratio of the total number of winning trades to the number of losing trades. It does not take into account how much was won or lost simply if they were winners or losers.
摘要: A type of limit order that can be modified by a floor broker according to his or her own judgment, allowing him or her to buy or sell to a set point beyond the bounds of the original order. This tradi[阅读全文:]
摘要: A type of financial software used by financial institutions for high-speed market data and messaging. Wombat was launched in 1997 and works with companies' existing software. Wombat was acquired in 2[阅读全文:]
摘要: A securities trade executed on an exchange at the same price as the preceding trade, but at a lower price than the last trade of a different price. For example, if a succession of trades occur in the [阅读全文:]
摘要: A security trade that is executed at the same price as the preceding trade but at a higher price than the last trade of a different price. For more than 70 years there was an "uptick rule" as establ[阅读全文:]
摘要: A group of investments which, when combined, create a zero net value. Zero-investment portfolios can be achieved by simultaneously purchasing securities and selling equivalent securities. This will ac[阅读全文:]
摘要: The situation at the opening of a trading day when there is a wide spread between the bid and ask prices for a security.
This situation can arise because market makers and market participants ha[阅读全文:]
摘要: A market in which market makers (or specialists) are required to give both a firm bid and firm ask for each security in which they make a market. In other words, those making the market must be willin[阅读全文:]