Rochdale Securities LLC, the 37-year- old brokerage that employs bank analyst Dick Bove, is seeking a capital injection after a trading error, said three people with knowledge of the firm’s situation. Executives at Rochdale are telling employees and potential investors that a trader at the firm made an unauthorized purchase of Apple shares, which has eroded the capital of closely held Rochdale, said one of the people, who declined to be identified because the overtures have been private. [Bloomberg]