Symbology

US Equities ATS Symbology

OneChronos trading instrument symbology

OneChronos supports three symbology conventions:

CMS Concatenated. Subscriber must populate the Symbol field with both the root symbol and a CMS suffix, for symbols requiring one. A single ASCII space must separate the root and the suffix. Example: Symbol=BRK A.
CMS Suffix. Subscriber must populate the Symbol field with only the root suffix, and SymbolSfx with a CMS suffix for symbols requiring one. Example: Symbol=BRK, SymbolSfx=A.
NASDAQ Integrated. Subscriber must populate the Symbol field with the root symbol and append a NASDAQ Integrated suffix for symbols requiring one. Example: Symbol=BRK.A.

Symbology election occurs on the port level. The table below is a comprehensive list of security categorizations (not all of which are necessarily tradable on OneChronos). Note that we include a column showing the mapping from CQS symbology to CMS/NASDAQ Integrated, but we do not support CQS.

Called

Class 'A' When Issued

Class 'A' Called

Class 'A'

Class 'B'

Class Convertible

Convertible

Convertible Called

Emerging Company Marketplace

Partial Paid

Preferred

Preferred 'A' Called

Preferred 'A' When Issued

Preferred (Class A) Convertible

Preferred (Class A) When Distributed

Preferred Called

Preferred Class 'A'

Preferred Class 'B'

Preferred When Distributed

Preferred When Issued

Rights

Rights When Issued

TEST Symbol

Units

Warrants

Warrants Class 'A'

Warrants Class 'B'

Warrrant When Issued

When Distributed

When Issued

Security Type	CQS Suffix (not tradable)	CMS Suffix	Nasdaq Integrated Suffix
Called	/CL	CL	*
Class 'A' When Issued	/Aw	AWI	.A#
Class 'A' Called	/A/CL	ACL	.A*
Class 'A'	/A	A	.A
Class 'B'	/B	B	.B
Class Convertible	/A/CV	ACV	.A%
Convertible	/CV	CV	%
Convertible Called	/CV/CL	CVCL	%*
Emerging Company Marketplace	/EC	EC	!
Partial Paid	/PP	PP	@
Preferred	p	PR	-
Preferred 'A' Called	pA/CL	PRACL	-A*
Preferred 'A' When Issued	pAw	PRAWI	-A#
Preferred (Class A) Convertible	pA/CV	PRACV	-A%
Preferred (Class A) When Distributed	pA/WD	PRAWD	-A$
Preferred Called	p/CL	PRCL	-*
Preferred Class 'A'	pA	PRA	-A
Preferred Class 'B'	pB	PRB	-B
Preferred When Distributed	p/WD	PRWD	-$
Preferred When Issued	pw	PRWI	-#
Rights	r	RT	^
Rights When Issued	rw	RTWI	^#
TEST Symbol	/TEST	TEST	~
Units	/U	U	=
Warrants	/WS	WS	+
Warrants Class 'A'	/WS/A	WSA	+A
Warrants Class 'B'	/WS/B	WSB	+B
Warrrant When Issued	/WSw	WSWI	+#
When Distributed	/WD	WD	$
When Issued	w	WI	#