Apple surges; technology companies gain ground.
Chemical maker will pay $57 billion for American seed maker.
Technology companies trade higher
Investors worry that the global economy is growing at a slower clip.
Federal Reserve member said the central bank should be careful about raising rates.
Federal Reserve slated to decide later this month.
Apple slumps almost 3% day after iPhone release
But Nasdaq does eke out record-high close.
U.S. stock indexes drifted between small gains and losses in early trading today following mixed signals from Europe and Asia overnight. Technology and health care stocks were among the biggest gainers, while consumer-focused stocks and utilities
New ticker symbol JCI starts trading.