Palantir (PLTR) shares closed the week of September 28, 2026, near $187–190 amid elevated volatility, with the latest session settling at $187.48 after a 1.15% decline from the prior close of $189.67. Strong Q2 results—93% year-over-year revenue growth to $1.94 billion, U.S. commercial revenue up 149%, and raised full-year 2026 guidance to $8.15–8.158 billion—drove post-earnings momentum and analyst price targets averaging near $195. However, the stock’s premium valuation (trailing P/E above 160) and recent developments, including the loss of an FAA contract and ongoing insider selling, have tempered near-term sentiment. Traders appear focused on whether AI platform adoption and defense momentum can sustain levels above $190 or prompt a retest below $180 before the next earnings release.