Indeed, US stocks are beating every major asset class for the first time in 17 years; the S&P 500 has rallied 14 per cent in 2012, beating US Treasuries, corporate bonds, commodities, the greenback and equities in Asia and Europe, data compiled by Bloomberg show.
And some are very optimistic about the road ahead.
"We see good earnings growth and improving economic outlook, we see good equity valuations and easy monetary policy, we see sceptical investors and low positioning in equity assets," Max King, a multi-asset strategist at Investec Asset Management in London, told Bloomberg. "This is a major green light for equities and the fact that people don't see it, is great."
Meanwhile, in Europe, the Stoxx 600 Index ended the session with a 0.4 per cent decline from the previous close, as investors remain concerned about the progress on financial assistance for Spain and Greece, and the ability of euro zone leaders to finally turn the region's sovereign debt crisis around.
Benchmark equity indexes also finished lower in Germany, France and the UK.
The weekend electoral win for Spanish Prime Minister Mariano Rajoy is being seen as taking pressure of him asking for an international bailout. The result was that the yield on Spain's 10-year bond edged higher.
Politics also are rising in focus in the US ahead of today's final debate between President Barack Obama and his Republican rival Mitt Romney. The latest US daily poll shows the two are in a dead heat ahead of the November 6 vote.