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FAQs: Infolect


What is Infolect?

Infolect is the London Stock Exchange's high performance market data system that provides real-time tick by tick data essential for anyone trading on our markets. 

How do I connect to Infolect?

There are a number of ways to connect to our Infolect platform. Customers can either connect:

How is Infolect data published?

Infolect publishes a broad and rich set of real time data, including UK data in Level 1 and 2 depths, International data in both Level 1 and Level 2 depths, Borsa Italiana data, Johannesburg Stock Exchange data, FTSE indices, RNS news, and soon - Baikal and Oslo Bors data.

What is the difference between Level 1 and Level 2 data?

  • Level 1 data: offers real-time best prices, trade reporting data and a range of key value added information including enhanced best price, allowing users to understand more about the underlying market depth and liquidity of securities.
  • Level 2 data: our most comprehensive service, providing the full depth of the order book, tick by tick.

Further information about our data structure can be found here.

Can I subscribe to a subset of instruments within a data group?

In short, no. At present, customers must subscribe to an entire data group - i.e. customers must take all data sets within UK Level 1 or 2, and not a specific group or subset of instruments (a customer cannot only receive FTSE 100 stocks for example). Our data dissemination structure (Service/Performance Channels) is liquidity aligned, allowing customers to manage feed handlers to subscribe to groups of stocks. Our Technical Library provides further clarification on our data dissemination structure.

What are Service/Performance channels?

Service and Performance channels are delivery mechanisms for the data produced by Infolect, and available as part of our direct connection - Extranex. Performance channels provide a connection with reduced latency. Both Service and Performance channels have a liquidity aligned structure for UK data channels, increasing the efficiency of market data delivery and optimising the way in which messages are distributed across channels.

What is throttling?

The Exchange has a responsibility to protect customers' connections from overflowing during periods of peak data flow on their Infolect connection. During extremely busy periods, the Exchange 'throttles' messages back, producing minor latency, and protecting customer systems and our network from these high data spikes. This throttling policy is only applied to Service Channels. Performance Channels remove these throttles by increasing the available bandwidth for data.

Can I send Infolect data to another organisation?

To onwardly disseminate London Stock Exchange data to another organisation you must have a licence. Varying licences, for differing data sets are available - please see our section on licenses to find out more.

   

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