Nancy Malamed-Simon, a senior equity derivatives marketer at Commerzbank Securities in New York, has jumped to specialist broker Israel A. Englander & Co. in New York, as co-manager of the midtown trading desk. Malamed-Simon said the new role centers on listed equities, including listed options, in contrast to her previous focus on over-the-counter derivatives. Malamed-Simon reports to Peter Feinberg, executive v.p. in New York.