SR Labs announces support for new IEX TOPS data feed

Posted 15th April 2015

SR Labs LLC., the largest feed handler vendor in the financial markets, has announced its support for the IEX Top of Book Quote Feed (TOPS). IEX TOPS is one of 5 feed handlers that SR Labs has released in Q1 2015. In addition to building the software feed handler product, SR Labs also plans to offer delivery of the data through their proprietary low latency consolidated market data feed, SuperFeed™.

TOPS is a direct data feed that provides aggregate best bid and offer quotes for displayed stock orders on IEX’s order book, using the IEX Transport Protocol (IEX-TP) and delivered in real time. IEX’s displayed quotation is not a protected quotation under Rule 611 of Regulation NMS, which means it will not be disseminated through a National Market System Plan Securities Information Processor (SIP) – it will only be available through TOPS. TOPS helps traders identify available interest in IEX without attributing any quotes to individual subscribers.

“As ever SR Labs’ roadmap is client driven, and it is no surprise the IEX TOPS feed has been in popular demand in 2015”

“IEX recently started to support displayed trading, and early results have shown that the trading experience has only gotten stronger. TOPS lets the equity trading marketplace know that IEX is here and is proud to support our subscribers with block volume and price improvement” said Ronan Ryan, IEX Chief Strategy Officer, “We’re pleased to work with SR Labs, who was ready to deliver this feed from Day 1.”

“SR Labs are delighted to support this new data feed, and continue to build on our portfolio of products connecting our clients to important sources of liquidity. As ever SR Labs’ roadmap is client driven, and it is no surprise the IEX TOPS feed has been in popular demand in 2015” says SR Labs SVP Product Management, Bill Cadmus.

This feed handler will be a further addition to SR Labs’ growing portfolio of feed handlers already on offer, now approaching a total of 500 different feed handler products.

For more information, contact SR Labs at +212 785 5835 or

About SR Labs

SR Labs is a global leader in enterprise grade market data and trading technology. They provide a wide range of solutions enabling the operation of scalable ultra-low latency systems, through to cost saving technology designed to shape the future of trading technology.

About IEX Trading

IEX is the first equity trading venue seeded exclusively by a consortium of buy-side investors, including mutual funds, hedge funds, and family offices. Dedicated to institutionalizing fairness in the markets, IEX provides a more balanced marketplace via simplified market structure design and cutting-edge technology. IEX offers a fair-access platform to any qualified broker dealer. IEX is driven by a team of cross-industry experts with backgrounds spanning market venues, electronic trading, and broker-dealers. Learn more at

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