MP Materials Corp. (NYSE:MP) rose Friday after a mixed quarterly update signaled improving profitability trends and steady momentum in magnetics.The company also outlined progress toward domestic heavy rare earth separation, bolstering sentiment around its long-term strategy.On November 6,  MP Materials reported third-quarter revenue of $53.55 million, missing analyst estimates of$54.92 million, according to Benzinga Pro.Also Read: USA Rare Earth Stock Falls After Q3 Earnings Report: Here’s WhyThe company ...