NYSE Euronext announced pro forma combined financial results for the first quarter of 2007 on Wednesday.

On a pro forma combined basis — as if the merger between NYSE Group and Euronext had been consummated on Jan. 1 — revenues would have been $1.12 billion (including $186 million of activity assessment fees), operating income would have been $264 million, and net income would have been $161 million.

The combination between NYSE Group and Euronext was consummated on April 4. Under the purchase method of accounting, NYSE Group was treated as the accounting acquirer of Euronext. Allocations of the purchase price to Euronext’s assets and liabilities used in the pro forma combined financial information are only preliminary allocations based on current estimates of fair values and may change when such estimates are finalized.

These pro forma combined results do not include any revenue or cost saving synergies that may be achievable subsequent to the completion of the April 4 combination, or the impact of non-recurring items directly attributable to either the merger of the NYSE and Archipelago or the merger of NYSE Group and Euronext.