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Platform Documentation SpiderRock ATS Message Schemas Release Notes Contact Us

Upcoming
8.5.5.1
8.5.4.2

Schemas
V7 to V8 Differences
V8 Staging to Prod Differences

Please note that the documentation provided here reflects the most up-to-date information, but some changes may not yet be released on the platform.

For up-to-date documentation, see the latest version (8.5.5.1).

Schemas
Enums
MarketSession

Version: 8.5.4.2

Enum: MarketSession

#	Name
0	None
1	PreMkt
2	RegMkt
3	PostMkt
4	PreRegMkt
5	RegPostMkt
6	AllDay

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© 2025. SpiderRock Technology Solutions, LLC (“SpiderRock”).
SpiderRock offers certain financial services through its wholly owned broker-dealer subsidiary, SpiderRock EXS, LLC (member of FINRA/SIPC). These services, including the SpiderRock ATS, are offered via a trading platform licensed to SpiderRock EXS, LLC by SpiderRock’s wholly owned subsidiary SpiderRock Platform Services, LLC. SpiderRock also offers market data and analytics services through its wholly owned subsidiary, SpiderRock Gateway Technologies, LLC. Please refer to additional important disclosures found here.

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