Palantir Technologies Inc. NASDAQ: PLTR continues to defy conventional expectations. In midday trading on June 16, PLTR stock is trading at 142.05. That’s slightly down from the all-time high (ATH) made earlier in the session. However, the stock is now the best-performing S&P 500 stock, up more than 89% in 2025.  Palantir Technologies TodayPLTRPalantir Technologies142.57 +5.17 (+3.76%) 52-Week Range$21.23▼$144.74P/E Ratio750.55Price Target$86.30Add to WatchlistThe immediate catalyst for PLTR stock was th ...