Stock market news live updates: Stock futures drop, Nasdaq sinks as Treasury yields climb

Stock market news live updates: Stock futures drop, Nasdaq sinks as Treasury yields climb

Stock futures sank Tuesday morning, with technology stocks leading the way lower as investors nervously eyed a swift rise in U.S. Treasury yields. 

Futures on the Nasdaq, a proxy for technology and growth stocks, underperformed against the other two major stock indexes, dropping 1.5% ahead of the opening bell.