At the end of 2022, the CME changed the roll-over date for equity index futures to the Monday prior to the third Friday of the expiration month (see https://www.cmegroup.com/trading/equity-index/rolldates.html). Consequently, we have changed the date on which our continuous contract symbols for these futures (e.g., @ES, @NQ, etc.) will roll over. For example, these continuous contract symbols will roll from March to June as of the beginning of the March 13 session. Please note that past rollovers for these symbols will not change. If you have any questions about this change, please post a new topic.

Expiration Months and Codes

Expiration Month Codes

Month

Code

January

F

February

G

March

H

April

J

May

K

June

M

July

N

August

Q

September

U

October

V

November

X

December

Z

FORMATS FOR ENTERING SYMBOLS:
In the formats that follow, a + (plus sign) is used only as a unit separator, and is not an actual part of the symbol format. The + character is used to make reading the formats easier. Do not type + when it appears.

Symbol Type	Format	Example

Common Stocks	SYMBOL	XYZ
Common Stock for Specified Exchange	SYMBOL + & + CLASS	XYZ&N
Class	SYMBOL + / + CLASS	XYZ/B
Preferred	SYMBOL + p + CLASS (if any)	XYZp or XYZpA
Rights	SYMBOL + r	XYZr
Warrants	SYMBOL + /WS	XYZ/WS
When Delivered	SYMBOL + /WD	XYZ/WD
When Issued	SYMBOL + w	XYZw
International	SYMBOL + . + Countrycode	XYZ.CA
Canadian Debenture Bonds	SYMBOL + d + CLASS (if any) + . + CA	MRldU.CA TBCd.CA CFEdB.CA
Canadian Installment Receipt	SYMBOL + i + CLASS (if any) + . + CA	STUi.CA TRHi.CA
Canadian Unit	SYMBOL + CLASS (if any) + . + CA	MSRu.CA MSRuA.CA
Bond	SYMBOL + % + BOND IDENTIFIER	DUK%A25 DUK%99
Called Bond, Convertable Called, Ex-Interest, Partial Called	SYMBOL + % + BOND IDENTIFIER + .	AAG%01. DUK%B21. DEW%97.
Bankrupcy Bond - NYSE	Q + SYMBOL	QMCRY%97
Bankrupcy Bond - AMEX	SYMBOL	EAL%J
Money Market and Mutual Fund	Symbol	Money market symbols are five letters long and have two xx's at the end. Mutual fund symbols are also five letters long and have one x at the end. ACEHX AAACX AADBX AADXX
Options (Equity and Currency)	. + SYMBOL + Month Code + Strike Price Code + & + Exchange Code	.IBMAA .IBMWT .GMAJ
Options for Specified Exchange	. + SYMBOL MonthCode + Strike Price Code + & + Exchange Code	.IBMGH&N
Commodities	/ + COMMODITY SYMBOL + YEAR CODE + Expiration Month Code	/LH8M or /C8K
Commodity Options	/ + COMMODITY OPTION SYMBOL + YEAR CODE + Expiration Month Code + C (for Call or P for Put) + Strike Price	/SP8HP71000 /OO8HC1500
Globex	/ + COMMODITY SYMBOL + YEAR CODE + Expiration Month Code + G	/SP8MG
Globex Options	/ + COMMODITY OPTION SYMBOL + YEAR CODE + Expiration Month Code + C (for Call or P for Put) + G + Strike Price	/SP8MCG48000
Summary of both Globex and regular trading	/ + COMMODITY SYMBOL + YEAR CODE + Expiration Month	/SP8MT /SP9HT
(generated by CME, not Hyperfeed Technologies).	Code + T
Summary of Globex and regular trading (generated by CME, not Hyperfeed Technologies).	/ + COMMODITY OPTION SYMBOL+ YEAR CODE + Expiration Month Code + C (for Call or P for Put) + T + Strike Price	//SP8HCT10350 SP8HPT74000