The growth figure was slightly lower than expected but the first quarter data was revised up.
The Dow Jones dipped by 6.7 points to 17,751.29 points.
The S&P 500 was virtually unchanged at 2,108.57, while the tech-heavy Nasdaq gained 17 points to 5,128.79 points.
Consumer products company Procter & Gamble lost 4%, and was the biggest loser on the Dow Jones, after reporting an 80% fall in quarterly earnings to $521m on lower sales and an one-off charge in Venezuela.
Food company Mondelez International jumped 5% after earnings surprised on the upside.
(Close): US shares were little changed on Thursday's session despite figures showing the US economy grew at an annual pace of 2.3% in the second quarter of the year.