"Nobody even thought, going in to that vote, that Brexit was a possibility," said Tom Porcelli, chief US economist at RBC Capital Markets.
"The market was too complacent. So you had this wild reaction.
"The worst fears have not materialised. But make no mistake, it's a long road."
On Friday, the Dow climbed 17 points, to nudge up by 0.1 per cent. The S&P 500 edged up by 0.2 per cent. Both indexes - after rising about 3.5 per cent in the week - are now almost where they were before the vote.
James Bullard, the president of the Federal Reserve Bank of St Louis, said the "verdict so far is that Brexit will not have a big impact on the US".
Though equities have recovered, that tells only part of the story, economists say, noting fresh signs of pessimism about the world's path. The Brexit has pushed fund managers more heavily into the bond market - meaning they are eager to put their money into the most conservative investments. That demand has further pushed down yields on bonds across the world, and the weekend yield on the 10-year US Treasury note briefly hit a record low.
Yields have also fallen amid signs that central bankers are again willing to loosen monetary policy to stimulate their economies. Bank of England governor Mark Carney said on Friday that Britain could cut already record-low interest rates this northern summer, because the "economic outlook has deteriorated".
Bond yields have also fallen over the past week in Japan, France, Germany and the Netherlands. In Switzerland, after the Brexit vote, the yield on a 30-year bond plunged into negative territory for the second time in less than two weeks.
The activity in the bond market suggests "a weaker global economic outlook," said Scott Anderson, chief economist at Bank of the West.