As of today, (1st May), Nasdaq will start sending real-time XRP on its Global Index Data Service.
The new index, dubbed XRP Liquid Index, according to Nasdaq is "designed to provide a real-time spot or reference rate for the price of 1 XRP, quoted in USD, and based on the most liquid ends of their markets."
The index was developed by the New-Zealand-based Brave New Coin and in a blog post they have said, "will allow users to track the price of the XRP token... with far greater transparency than before."
They go on to say why they created the XRPLX:
“To meet the marketplace requirement for a single, reliable and fair USD price for XRP — based on live real-world trading activity," and that this index is "designed to report a market price at which liquidity could enter or exit an XRP position."
On top of this, Brave New Coin also add:
"The XRPLX captures a comprehensive, global sample of liquidity on the highest volume and quality exchanges"
"Ideal for settlements and accurate spot pricing, the XRPLX API includes 30 second Intraday pricing, End-of-Day OHLCV and Time & Volume-Weighted-Averages."
"The XRPLX sources data from only the most liquid exchanges by volume and order-book depth. Given that exchanges are third-party organizations operating in a volatile and competitive marketplace, BNC reviews its constituent mix and index methodology every quarter to ensure the quality of its indices. Current constituent exchanges for the XRPLX include Bitfinex, Bitstamp, Poloniex and Kraken with Coinbase to be added in the next review."
"The 'LX' family of BNC indices has had its methodology independently audited against key IOSCO (International Organisation of Securities Commissions) principles..."
"BNC’s Liquid Index (LX) indices are accurate and transparent. Drawing on qualitative and quantitative data sources, and factoring in the stability and quality of constituency, as well as volume, book depth, tick size and other factors from qualified market participants, the indices calculate a fair global value for the price of Bitcoin, Ethereum and now XRP, expressed in USD, every 30 seconds."
As reported by CryptoGlobe, Nasdaq, which "first partnered with Brave New Coin in February when it added BNC’s Bitcoin and Ethereum Liquidity Indexes (BLX and ELX)", says that "data recipients will receive real-time index information from the proprietary GIDS data feed” every five minutes but this could be false because it sends out Bitcoin Liquid Index and Ethereum Liquid Index every thirty seconds.