The London Stock Exchange, which is buying Borsa Italiana, reported record first-quarter revenue of 100.1 million pounds ($203 million) on Wednesday due to strong share trading and company flotations.
The LSE said revenue for the three months ended June, the first quarter of its financial year, rose 19% from a year earlier as initial public offerings (IPOs) on the main board hit their highest level in six years.
"This strong first quarter performance underpins our confidence in an excellent outcome for the full year," the LSE said.
Its quarterly revenue was 26% of the full-year market forecast of 379.2 million pounds, according to Reuters Estimates.
"In the months ahead we look forward to completing our merger with Borsa Italiana to create Europe's leading diversified exchange group," Chief Executive Clara Furse said in a statement.
The LSE announced its takeover of Borsa Italiana on June 23, a move which was expected to generate total synergies of 40 million pounds and be earnings accretive by at least 10%
in the financial year ending March 2009.