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Platform Documentation SpiderRock ATS Message Schemas Release Notes Contact Us

Upcoming
8.6.1.2
8.5.12.1

Schemas
V7 to V8 Differences
V8 Staging to Prod Differences
Data Dictionaries

Please note that this documentation may include updates not yet released on the platform. For the most current released information, see the latest version (8.6.1.2).

Schemas
Enums
MarketSession

Version: 8.6.1.2

Enum: MarketSession

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

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© 2026. 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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