FRANKFURT (Reuters) - Shares in luxury carmaker Porsche AG are up 3.4% at the top of Frankfurt's blue-chip DAX index after traders points to positive brokerage comments following a call with investors prior to the start of the blackout period.

Porsche held its so called pre-close call on July 9, which one trader said showed sequential margin improvement and a better cash conversion for the second quarter.

(Reporting by Anika Ross and Samuel Indyk; Writing by Christoph Steitz; Editing by Rachel More)