The yield on the 10-year Treasury note edged down to 1.86 percent from 1.87 percent.
Among other stocks making big moves:
— Wireless network operator Clearwire jumped 22 cents to $3.14 after Dish network made an unsolicited offer to buy the company, which has already agreed to sell itself to Sprint. Dish rose $1.17 to $37.14 and Sprint fell 8 cents to $5.89.
— Online education company Apollo Group plunged 6 percent after reporting a sharp decline in fall-term student sign-ups at the University of Phoenix. The stock fell $1.18 to $19.76.
— Seagate Technology, a maker of hard-disk drives, jumped $1.72 to $33.12 after predicting revenue for its fiscal second quarter that topped Wall Street expectations late Tuesday.
— Bank of America fell 47 cents to $11.51 after Credit Suisse analysts lowered their outlook on the lender to "neutral" for "outperform," saying the current stock price overestimates the improvement in cost reduction that the bank can achieve this year.