Palantir Technologies (PLTR) shares traded in a volatile range between roughly $186 and $202 during the week of October 19, 2026, rebounding from a sharp 7% prior-session selloff amid broader AI-software rotation. The primary near-term catalyst was the October 19 announcement of a partnership with Knox Systems to accelerate secure deployments in FedRAMP and IL5 federal environments, which supported a 4.4% Monday gain and helped offset valuation concerns in a high-multiple name. Recent Q2 results showing 93% year-over-year revenue growth to $1.935 billion and raised full-year guidance continued to underpin trader focus on commercial and government AI demand, while the stock’s elevated P/E near 160 and sensitivity to tech-sector flows kept implied probabilities fluid ahead of the November 2 third-quarter earnings release.