SK Hynix opened at $170 per share on the Nasdaq on Friday, rising about 14%, as U.S. investors jumped at the opportunity to get a stake in South Korea's second-most valuable company. The stock is trading under the ticker symbol SKHYV, and will switch to SKHY as of Tuesday. The company's American depositary receipts, or ADRs, were priced at $149, raising $26.5 billion for its aggressive expansion plans, which includes investing in new factories and equipment."It's a kind of dream, and now it's a ...