QuantumScape stock is on the rise following some positive PR regarding its battery business.The capital markets have been roaring so far this year. Through the first six months of 2024, the S&P 500 gained 14% while the Nasdaq Composite soared by 18%. One stock that has not fared so well though is QuantumScape (QS 1.26%). From January through the end of June, shares of the electric vehicle battery maker cratered 29%.However, earlier this month QuantumScape announced a major new development with its existing ...