That 388-day stretch is the longest the S&P 500 has ever gone without a 3% or more retreat, according to Bespoke Investment Group. The S&P 500 is up a ton since the 3%-decline streak started -- 25% to be exact. Goldman Sachs recently warned that the S&P 500 could tumble by 5% if tax cuts aren't enacted. Goldman Sachs predicts that tax cuts will lift corporate profits by 14% next year, carrying the S&P 500 to 2850. UBS thinks the S&P 500 will hit 2,900 next year without tax cuts and go "a lot higher" -- to 3,300 -- if tax legislation gets passed.

Source: CNN November 26, 2017 14:48 UTC