Rothschild filed for an initial public offering.

The brokerage firm, formally known as L. F. Rothschild, Unterberg, Towbin Holdings, said it filed a registration statment for 6 million common shares. Of that, 3 million are being offered by the company and another 3 million by a selling shareholder, the company said. The shares are expected to draw $16 to $19 each. Proceeds will be used to expand its broker-dealer business, Rothschild said.