Perpetua Resources is trading 6.63% lower at $15.50 in pre-market; supplied reporting does not identify a clear catalyst. - Shares closed at $16.60 on October 26, when the company announced a U.S. Army tungsten exploration agreement. - The agreement includes up to $40 million in Army funding, with a matching contribution from Perpetua. - A recent article raised valuation concerns, but reporting does not establish them as the cause. Broader market indicators were positive.