In the United States, there are currently two SIPs: the Consolidated Tape Association (CTA) which oversees the SIP for NYSE listed securities, and the Unlisted Trading Privileges (UTP) which does the same for Nasdaq listed securities. Each SIP is operated by a committee of exchanges known as “participants”. You can read more about the SIPs in our blog post - Understanding the SIPs
Knowledge Base/What are the Securities Information Processors (SIPs)?
What are the Securities Information Processors (SIPs)?
Securities Information Processors (SIPs) are regulatory bodies that process and consolidate bid/ask quotes and trades from all trading exchanges into a single data feed.
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- Title
- Are all Indices available through the basic subscription tier?
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Data Coverage
- Indices Category
Indices
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- No, certain indices are only available through paid subscription tiers.
- Title
- Does Polygon offer dark pool data?
- Data Coverage Category
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Stocks
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- Yes, we provide dark pool data. If a trade comes through with an exchange ID of 4 (exchange:4) and also has an attached “trf_id” field, it came from a dark pool.
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- Does Polygon offer pre-market and after-hours data?
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FAQ
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Stocks
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- Yes, we provide data for every trade that occurs, including during pre-market and after-hours. Our tick-level market data streams during these extended hours as well.