- Rate Of Change
- The speed at which a variable changes over a specific period of time. Rate of change is often used when speaking about momentum, and it can generally be expressed as a ratio between a change in one variable relative to a corresponding change in another. Graphically, the rate of change is represented by the slope of a line.
Rate of change is often illustrated by the Greek letter delta. Many traders pay close attention to the speed at which one variable changes relative to another. For example, option traders study the relationship between the rate of change in the price of an option relative to a small change in the price of the underlying asset, known as an options delta.

*Investment dictionary.
Academic.
2012.*

### Look at other dictionaries:

**Rate of change**— may refer to* Derivative, rate of change in a mathematical function, often a time derivative * Rate of change (technical analysis), a stock market indicator … Wikipedia**rate of change**— Date: 1876 a value that results from dividing the change in a function of a variable by the change in the variable < velocity is the rate of change in distance with respect to time > … New Collegiate Dictionary**rate of change**— a value that results from dividing the change of a function of a variable by the change in the variable velocity is the rate of change of distance with respect to time … Useful english dictionary**Rate of Change**— ► See ROC … Financial and business terms**Price Rate Of Change - ROC**— A technical indicator that measures the percentage change between the most recent price and the price n periods in the past. It is calculated by using the following formula: (Closing Price Today Closing Price n Periods Ago) / Closing Price n… … Investment dictionary**rate**— {{Roman}}I.{{/Roman}} noun 1 speed/frequency ADJECTIVE ▪ constant, expected, regular, steady, unchanged ▪ slow ▪ the slow rate of change … Collocations dictionary**Rate (mathematics)**— A rate is a special kind of ratio, indicating a relationship between two measurements. A rate may be defined using two numbers of the same units resulting in a dimensionless quantity (for example, 1 in 10 people ), or may be defined by two… … Wikipedia**change**— {{Roman}}I.{{/Roman}} noun 1 becoming/making sb/sth different ADJECTIVE ▪ big, considerable, dramatic, drastic, enormous, extensive, far reaching, fundamental, important … Collocations dictionary**Rate of climb**— An F 15 Eagle climbing and releasing flares. In aeronautics, the rate of climb (RoC) is an aircraft s vertical speed the rate of change in altitude. In most ICAO member countries (even in otherwise metric countries), this is usually expressed in… … Wikipedia**rate-of-temperature indicator**— A type of fire warning system that uses a series of thermocouples to sense the rate of change of temperature rise. Any increase in temperature whose rate of change is higher than specified makes current flow into the system, which appears as a… … Aviation dictionary