<prompt> Gadzira shanduro yakaoma zvikuru yemutsara uyu Kunyoresa paZurich stock exchange yakatevera muna 1987.  <response>: Chokwadika, shanduro yakaoma zvikuru yemutsara ndeiyi Kunyora paZurich stock exchange kwakateverwa muna 1987, uye vashandi vose vakagamuchira migove mukambani. 