A 10% drop is a big enough deal that professional investors have a name for it — a “correction” — and the S&P 500’s 1.4% slide on Thursday sent the index to its first si

In the bond market, Treasury yields climbed to regain more of their losses from recent months sparked by worries about the U.S. economy’s strength. The 10-year Treasury rose to 4.30% from 4.28% late Tuesday and from 4.16% at the start of last week.