US STOCKS-Wall St gains as data points to improving economy
* 30-year U.S. Treasury yield falls to lowest in at least 60 yrs
* June ISM index at 53.2 vs estimate of 51.4
* U.S. exchanges closed on Monday for Independence Day
* Indexes up: Dow 0.2 pct, S&P 0.25 pct, Nasdaq 0.52 pct (Updates to early afternoon)
By Yashaswini Swamynathan
July 1 (Reuters) - U.S. stocks extended their gains and were up for the fourth straight day on Friday as strong manufacturing data boosted prospects for an improvement in the economy.
The S&P 500 is on track for its best weekly gains since October, having recovered sharply from a bruising selloff after Britain voted to quit the European Union.
Investors are now pinning their hopes on central banks easing monetary policy to support global growth.
Data from the Institute for Supply Management (ISM) showed its index of national factory activity rose to 53.2, topping expectations of 51.4, according to a Reuters poll. Continuación...