The Russell 2000 Index fell 0.5% early Thursday, putting the small-capitalization index on the brink of ending in correction territory. The move for the index, which had mostly enjoyed gains during worries about tariff clashes between the U.S. and China, puts it on the verge of closing with a fall of at least 10% from a recent peak at 1,740.75 hit on Aug. 31, meeting the qualification for a correction. Small caps most recently on Thursday were down 0.1% at 1,575, slumping a day after the Dow Jones Industrial Average plunged by 830 points and the S&P 500 index registered the worst one-day drop since early February. The Nasdaq Composite Index , meanwhile, saw its steepest single-session slide, down more than 4%, since June of 2016, as a rise in yields imperils a bull run for stocks, reflecting a rise in borrowing costs for corporations and individuals. Equity benchmarks on Thursday were struggling to rebound from the prior day's rout.