NEW YORK (AFP) - A post-holiday pall fell on US stocks on Tuesday (July 6) even as the Nasdaq eked out a new record close amid slightly underwhelming data and the failure of Opec+ talks. The closely-watched monthly survey from the Institute for Supply Management (ISM) showed the services sector is still growing strongly but had slowed more than expected in June amid supply issues, rising prices and difficulties hiring - and keeping - workers in the hot labour market. That report sent Treasury debt prices higher. There was little other economic news, but oil-related shares were "the top loser in afternoon action amid a tumble in crude oil prices on festering supply uncertainty after another breakdown in Opec+ oil production talks on Monday," according to Schwab analysts. The Dow Jones Industrial Average lost 0.6 per cent to end at 34,577.37, while the broad-based S&P 500 dipped 0.2 per cent to 4,343.54 in the first session the Independence Day holiday. But the tech-rich Nasdaq Composite Index gained 0.2 per cent to finish at 14,663.64, topping Friday's record by 24 points. Peter Hanks, market strategist at IG, notes the summer months tend to have lower trading volume, amid vacations...