Shares of Nasdaq (NDAQ) drifted marginally higher even after it emerged that the company and Spain’s Bolsas y Mercados Espanoles, a stock exchange operator, have been investigated for allegations of charging too much for stock market data, a report from Dow Jones’ Financial News said Monday.

According to people familiar with the matter, the European Commission’s antitrust arm has requested information from Nasdaq, BME and third-party data distributors as part of the probe, the news report said.

The move could result in a wider probe into anti-competitive practices if the allegations are proven to be true, it added.

Shares of Nasdaq traded near the top end of their 52-week price range of $75.49 – $97.11.

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