The New York Stock Exchange is close to a deal with the city to move its trading floor for the first time since 1903 as it seeks more space to accommodate a dramatic increase in listings and trading volume.

The exchange confirmed Thursday that it is looking at several locations near its landmark Wall and Broad street headquarters for an expanded trading floor and hopes to have an agreement with city planners and other officials in months.Big Board officials refused to identify the buildings being targeted for the new trading floor, which most likely would be connected to the current facilities.

An agreement would cap a lengthy effort by the exchange to find desperately needed space for a new trading floor to alleviate overcrowding and boost its efforts to expand aggressively into new markets.

The exchange had floated plans before to expand by building an eight-story atrium over a historic section of Broad Street, but that idea ran into opposition from preservationists.

It has been working with the mayor's office since then to come up with a suitable alternative. Mayoral aides refused to comment Thursday on whether an agreement is near or what sites might be targeted.