US stocks started the fourth quarter on a strong note on Monday, with all three major indexes hitting record high closes as data pointed to underlying strength in the economy.
A measure of US manufacturing activity surged to a near 13-1/2-year high in September.
The Dow Jones Industrial Average rose 152.51 points, or 0.68 per cent, to 22,557.6, the S&P 500 gained 9.76 points, or 0.39 per cent, to 2,529.12.
The Nasdaq Composite added 20.76 points, or 0.32 per cent, to 6,516.72.
All three posted record high closes.
Details were still emerging on the deadliest mass shooting in US history. A gunman killed at least 58 people and wounded more than 500 more in Las Vegas on Sunday.
Shares of gun makers rose, including Sturm Ruger, up 3.5 per cent.
Advancing issues outnumbered declining ones on the NYSE by a 1.82-to-1 ratio; on Nasdaq, a 2.36-to-1 ratio favoured advancers.
About 6.3 billion shares changed hands on US exchanges, about even with the daily average for the past 20 trading days, according to Reuters.
