Finally, the Conference Board's leading economic index gained 0.9 per cent in July, following an increase of 0.6 per cent in the previous month.
"It seems that conditions reflect the best of all worlds," Terry Sandven, chief equity strategist at US Bank Wealth Management in Minneapolis, told Reuters. "US economic growth that is neither too slow, which would put pressure on earnings, nor too fast, implying inflationary pressures which could lead to (price-to-earnings ratio) contraction and possibly accelerate the Fed's move towards higher interest rates."
All eyes are squarely on Fed Chair Janet Yellen's speech on Friday in Jackson Hole, Wyoming.
Shares of eBay rallied, last up 4.6 per cent, after The Information website reported the company may spin off its PayPal payment business as early as next year.
Shares of Hewlett-Packard jumped, last up 6 per cent, after the company reported its first sales growth in 12 quarters.
Bank of America shares rose 3.1 per cent after it finalised an agreement to pay US$16.6 billion to US authorities to settle a long probe into sales of home loans.
However, shares of Sears slumped, last down 6.2 per cent, after the company reported its ninth consecutive quarterly loss amid a further slide in sales.
In Europe, the Stoxx 600 finished the session with a 0.7 per cent increase from the previous close. The UK's FTSE 100 rose 0.3 per cent, Germany's DAX advanced 0.9 per cent, while France's CAC 40 added 1.2 per cent.
Markit's preliminary purchasing managers' index for euro-zone manufacturing and services activity slid more than expected to 52.8 in August, down from 53.8 in July.
"The eurozone economy continued to make steady progress in August, as the region looks to bounce back following the recent weaker-than-expected GDP readings for the currency union," Rob Dobson, senior economist at Markit, said in a statement.
"However, with the PMI Output Index slipping slightly to 52.8, the region remains on course to register growth of only around 0.3 per cent-0.4 per cent in the third quarter, a level that is unlikely to stimulate any real turnaround in the labour market."