**Glossary ( A-C )( D-F )( G-J )( K-M )( N-S )( T-Z )****Gamma**- The degree by which the delta changes with respect to changes in the underlying instrument’s price.
**Gann’s Square of 9**- A trading tool that relates numbers, such as a stock price, to degrees on a circle.
*Gann Theory*- Various analytical techniques developed by legendary trader W.D. Gann.
**Gap**- A day in which the daily range is completely above or below the previous day’s daily range.
**Genetic Algorithms**- Algorithms that mimic the characteristics associated with evolution and that are well-suited to optimization problems such as optimizing neural network parameters.
**Genetic Programming**- In artificial intelligence, this form of programming automatically generates a program from a set of primitive constructs.
**Give-up**- When a broker executes an order for another broker’s client and the two brokers split the commission; the client pays nothing extra.
**Golden Mean or Golden Ratio**- The ratio of any two consecutive numbers in the Fibonacci sequence, known as phi and equal to 0.618; a proportion that is an important phenomenon in music, art, architecture and biology.
**Golden Section**- Any length divided so that the ratio of the smaller to the larger part is equivalent to the ratio between the larger part and the whole and is always 0.618.
*Greeks*- Jargon; a loose term encapsulating a set of risk variables used by options traders.

*Gross Domestic Product*

**Growth Fund**

**Guaranteed Investment Contracts (GICs)**

**Hanning Weight**

**Harami**

*Head and Shoulders*

*Hedge Fund*

*Herrick Payoff Index*

*Heuristic Bias*

**Heuristic Method**

**Heuristics**

**Hidden node**

**Hierarchical Neural Network**

**High Pass Frequency Filter**

**High-Ticking**

**Hines Ratio**

**Historic Volatility**

**Historical Data**

**Hook Day**

**Implied Alpha**

**Implied Volatility**

**Impulse**

**Impulse Wave**

**In Play**

**In-the-Money**

**Income Dividends**

*Index Fund*

**Inductive Logic**

*Inefficient Markets*

**Initial Balance**

*Initial Public Offering*

**Inside Day**

**Interest Rate Swaps**

**Intermarket Analysis**

**Intrinsic Value**

*Investment Clubs*

*IRA*

**Irregular Flat**

*Island*

**January Effect**

*Jumbo Certificate of Deposit*