The S&P 500 is up almost 15% year-to-date and closed up 0.19% to 4,247.44, having reached 4,249.74 intraday.
All eyes this week will be on some direction from the US Federal Reserve's Federal Open Market Committee meeting.
Market futures were mixed today, with holidays in China and for the Australian stock exchange.
The gold price has plunged to US$1,866 an ounce on the spot market, having nudged the $1,900/oz mark again last week.
Barrick Gold closed down 1.5% in Toronto on Friday and Newmont lost 1% in New York.
In London, Thungela Resources, Anglo American's thermal coal spin-out, continued its recovery after a downbeat debut last week, closing up 25.4% on Friday to 158p.
Finally, Glencore rose 2.88%.
