NEW YORK--Stocks that traded heavily or had substantial price changes on Friday: JPMorgan Chase Co., up 90 cents to$ 149.77. The bank reported strong second-quarter financial results. UnitedHealth Group Inc., up$ 32.42 to$ 480.17. The health insurer gave investors an encouraging profit forecast after beating analysts' second-quarter financial forecasts. Acadia Pharmaceuticals Inc., up$ 6.38 to$ 32.18. The biopharmaceutical company acquired rights to a genetic disorder treatment outside of North