Bloomberg has overtaken Reuters in financial market data sales, according to figures quoted by the Financial Times.
The data shows Bloomberg's share of sales rising from 39.7% to 43.1% in the $6.7bn market for real-time data used by equity traders, foreign exchange dealers and institutional investors.
Reuters, by comparison, saw its share fall from 42.7% to 39.8% last year - representing sales down from $2.89bn to $2.67bn.
The UK group, nevertheless, still dwarfs Bloomberg in its total number of installed trading positions. Reuters has 427,000 screens - including mobile devices - serving the financial services industry, down from 493,000 in 2002. Bloomberg saw an increase from 171,300 to 179,271 last year.
The sales growth at the US company reflects its premium pricing, says the FT, with average monthly screen prices of $1,342 compared with $521 at Reuters.
Thomson Financial, the third largest provider of market data, saw its revenues rise six per cent to $415m and its screens increase 3.7 per cent to 205,840.
For the industry as a whole, total sales fell 1.33 per cent to $6.7bn, while the screen count was down 6.1 per cent at just over 955,000.