 loss as they followed the recent weakness in Bitcoin prices. The cryptocurrency exchange's stock has dropped 6.3% during its current slump, which would be the longest since the six-day stretch that ended September 22nd of last year. Samsung's largest labor union with more than 30,000 workers is declaring an indefinite strike at the company's South Korean plants amid demands for better pay. It's a shock move that threatens to produce disruptions at the world's largest memory chip maker.