NYSE Euronext is working with the U.S. Securities and Exchange Commission to address compliance with a rule prohibiting markets from disseminating information to subscribers faster than it is sent to organizations that provide the data publicly.

NYSE Euronext and the SEC are resolving possible violations of “a technical rule governing the timing of delivery of certain exchange market data,” Richard Adamonis, a spokesman, said in an e-mail. “The company does not expect that any settlement of this matter will be material.”

U.S. securities exchanges aren’t allowed to release data about trades and their best bids and offers to clients faster than they send it to the organizations that collect and disseminate it publicly. Exchanges earn money from the sale of subscriptions to proprietary and public data feeds, or streams of information.

Read More: Businessweek