The company lost its entire computer system in the destruction.
However, by 17 September 2001 the company announced it was open for business, operating from two locations. One space was donated by Bank of America Securities, and the other was Sandler O'Neill Asset Management's office. By 22 October the company had secured a new headquarters location in Manhattan, and had hired 13 new employees.
SOP maintains offices in New York City, Atlanta, Boston, Chicago, and San Francisco. Sandler O’Neill Mortgage Finance L.P. has offices in New York and Memphis.