According to @CNBC, the biggest U.S. premarket movers on December 19, 2025 include Oracle, CoreWeave, Nike, and Coinbase, indicating notable early-session activity in these names, source: @CNBC. The post directs readers to a detailed report for price moves and catalysts behind these tickers before the opening bell, source: @CNBC. Coinbase (COIN) appearing on the premarket movers list puts crypto-exposed equities on watch at the open due to its direct linkage to digital asset trading activity, source: @CNBC.