GLOSSARY OF TERMS
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G

GALAX-C CME hand-held trading terminals.
Gamma The measure of the change in an option's delta given a change in the futures price. Equal to the change in delta divided by the change in futures price.
Gap A price area at which the market didn't trade from one day to the next. See breakaway gap, exhaustion gap, and runaway gap.
Gap analysis An analysis of systems or procedures to find differences in functionality or benefits.
Gap theory A type of technical analysis that studies gaps in prices.
GCC CME Globex Control Center, the exchange department that supports and maintains CME's electronic trading system.
GEM The Growth and Emerging Markets Division of CME. Holders of the membership interest associated with Chicago Mercantile Exchange Holdings Inc. Class B-4 Stock, who have been elected to membership, are members of the GEM Division (GEM members).
GEM Division The Growth and Emerging Markets Division of the Exchange. Holders of the membership interest associated with Chicago Mercantile Exchange Holdings Inc. Class B-4 Stock, who have been elected to membership shall be members of the GEM Division (“GEM members”).
GEM Fractional Interest A share of Class B Common Stock, Series B-5.
Generic asset types A Clearing 21 Asset Management term used to define a group of European sovereign debt securities. For the acceptable pieces of collateral, the clearing firm will use a C21 generic asset type (bill, bond or note) and the associated currency denomination to reflect the deposit or withdrawal request of the specific foreign sovereign debt.
GFX Corporation A subsidiary of the exchange established to make markets in currency contracts.
Give up An order to be given to another member firm in clearing system, an allocation. An order executed by clearing firm A and given to clearing firm B where it will be cleared and processed. Give-up order indicator of "GU" is populated in F-Ex field.
Give up trade A trade executed by one firm but subsequently given up to and cleared on the books of another firm.Example: An order executed by clearing firm A and given to clearing firm B where it will be cleared and processed. Give-up order indicator of "GU" is populated in F-Ex field.
Give-up system ACS (Allocation Claim System) is the CME's electronic give-up system. ACS allows executing firms to give-up (allocate) trades at the execution price to the designated carrying firms(s), utilizing their current trade entry systems and CME's Trade Management System. ACS may be utilized for trades executed and given up to a single firm, as well as trades given up to multiple firms.
GL NEGO (negotiator) Order Management/NEGO window – Additional module to GL WIN – allowing order entry, modification and cancellation. Mandatory for traders.
GL SELECTOR Used by the firm administrator. Interface control layer at the SLE level (on the broker's site / local server): filters orders before they are sent to the central engines. The filter is based on traders / applications authorization and credit control profiles. There is one selector per SLE.
GL WIN The trader workstation application, provided by GL. It is – in its base version – a visualization application, and is completed with one or several additional modules.
GLOBEX Terminal Operator A GLOBEX terminal operator is a person who is authorized to enter orders through a GLOBEX connection.
GLOBEX Trader Front-end trading application that connects a user either directly or via the Internet, to CME’s electronic trading platform.
GLOBEX Trading Hours Those hours designated by the Board of Directors for trading through GLOBEX for particular contracts.
GLOBEX user ID An identifier assigned to access the GLOBEX electronic trading engine.
Globex® Globex® is CME's electronic trading application.
Good-'til-canceled (GTC) GLOBEX Also known as open order. An order that remains good until filled, or the contract expires. Only applicable to electronically traded products (i.e., S&P® E-mini, Turn).
Good-'til-canceled (GTC) Open Outcry An order that remains in effect until it's canceled, filled or until the contract expires.
Good-Through-Date (GTD) GLOBEX Order good until the date specified by the trader. If not filled at the end of the specified date/session, will be eliminated. Only applicable to electronically traded ETH products (i.e., S&P® E-mini, Turn).
Good-Through-Date (GTD) Open Outcry An order that remains in effect through the specific date unless earlier executed or cancelled
Good-till-canceled (GTC) order Also known as open order. An order that remains in effect until it is canceled, filled or the contract expires.
Good-till-date (GTD) An order that remains in effect until the date specified by the trader. If not filled at the end of the specified date/session, will be eliminated.
Grades Standards set for the quality of a commodity.
Grading Certificates Certificates that verify the quality of a commodity.
Grantor A seller of an option. See also Writer.
Gross margining A method by which a clearing firm's customer margins are based on the firm's positions and applicable submitted spreads. For example, if a firm had only two accounts for two customers in its customer origin and one of those accounts had three open long positions and the other had two open short positions, the firm's margin would be based on five open positions if the firm did not submit spreads (rather than one net long position).
Gross position The sum of a clearing firm's current open positions in a given contract.
GUI wallboards Quote display application for wallboards on the trading floors.
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