What happened

Announcing second-quarter 2023 financial results after the market closed yesterday, MP Materials (MP -0.19%) beat analysts' top- and bottom-line expectations. And that's not the only thing driving investors to the rare earth metals stock today. MP Materials also reported the achievement of a milestone, which bodes well for the company's future.

As of 2:45 p.m. ET, shares of MP Materials have risen 5.9%, retreating slightly from their earlier climb of 10.5%.

So what

Beating analysts' expectations that it would report Q2 2023 sales of $61 million, MP Materials booked Q2 2023 revenue of $64 million. Another pleasant surprise was found at the bottom of the income statement, where MP Materials reported adjusted diluted earnings per share of $0.09, higher than analysts' estimate of $0.06.

More encouraging than the financial results, however, was news that the company has commenced production of separated rare earth minerals at its Mountain Pass facility in California. In addition, management projects that deliveries of neodymium and praseodymium oxide (NdPr) shipments will begin in the third quarter. Plus, on the company's conference call, management reported that "great progress" has been made with the rare earth, metal, alloy, and magnet manufacturing facility that's being developed in Texas.

Now what

While the company's better-than-expected Q2 2023 financial results are powering some of the buying activity today, the important details that prospective investors should focus on are the company's progress in commencing separation of rare earth minerals at its Mountain Pass facility as well as the expectation that NdPr oxide deliveries will begin this quarter.

Amid a tense relationship with China regarding rare earth metals, the progress of MP Materials toward vertical integration is noteworthy. It's an important development for securing the nation's supply of rare earth metals and for the growth company's success.