Friday’s share move was the biggest intraday decline for Palantir, helmed by chief executive Alex Karp, since August, after a remarkable upward trajectory for the stock. Photo by Kevin Dietsch/Getty Images/Postmedia files

Palantir Technologies Inc.’s stock fell more than eight per cent on Friday following a report that its battlefield communications system , along with that of defence tech firm Anduril Industries Inc. , was seriously flawed — a claim both companies said was out of date and inaccurate.

In a statement Friday, Palantir said that issues in the report, published by Reuters, had already been addressed. The report centred on a September Army memo expressing concerns over Anduril’s NGC2 prototype system, which stands for Next Generation Command and Control, and includes

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