U.S. stock futures rise Thursday but European shares fluctuate after global oil prices turn sharply lower.
Prepare for a week of Fedspeak as members prime markets for a potential interest rate hike in June.
Broadcom shares were rising on the news.
Apple could lower its memory costs by acquiring Toshiba's flash business, and Broadcom could add to its mobile and data center footprints. But a deal would also feature some challenges.