Drone Firm EOS Shares Jump After Response to Short Report

Electro Optic Systems Holdings Ltd. shares climbed after the Australian defense company responded to a short-seller report from Grizzly Research.

The stock soared 11%, the most in about two months, on Tuesday after spurning claims made by Grizzly in a report released last week. It slid 16% on Friday following the short seller’s publication, and was placed in a trading halt pending EOS’s reply.