Zscaler Shares Plunge 31 in Record Decline After Prudent Guidance and Sales Overhaul SpaceX and OpenAI MegaIPOs Spark Market Top Debate TSX Retreats from Record High as Technology Stocks Decline Jim Cramer Comments on What He Calls a Silly Aspect of Arm Holdings Stock Semiconductor Titans Hit 1 Trillion Samsung Ends Strike Micron Surges on AI Valuation Russia Escalates Ukraine Conflict Threatens Additional Strikes on Kyiv Urges Foreign Nationals to Depart Jamie Dimon Signals Challenges Ahead for JPMorgan Bankers