Web-based software provider IntraLinks Holdings Inc's second-quarter revenue topped market expectations as sales at its mergers and acquisitions unit jumped 29 percent, but it forecast a third-quarter profit below estimates.

Separately, in a regulatory filing, the company said it received a subpoena from the U.S. Securities and Exchange Commission requesting some documents related to its business from Jan 1 through the present.

For the third quarter, IntraLinks, which provides secure online spaces for conducting financial transactions, discussing acquisitions and exchanging documents, expects to report an adjusted profit of 11-13 cents a share on revenue of $54-$56 million.

Analysts, on an average were looking for a profit of 14 cents a share and revenue of $54.9 million, according to Thomson Reuters I/B/E/S.

Second-quarter net profit was $7 million, or break even on a per share basis, compared with a net loss of $3.9 million, or $1.78 per share, a year ago.

Excluding items, IntraLinks, which went public last year, earned 10 cents a share, in line with market expectations.

Revenue rose by a fifth to $53.3 million, against estimates of $52.3 million.

Shares of the company closed at $12.16 on Tuesday on the New York Stock Exchange.

(Reporting by Sayantani Ghosh in Bangalore)