Can someone tell me how many people in the world hold FRM certificates?
Not sure if there's an exact figure that we can get online unless you ask GARP directly. But there is this statement in the 2019 Candidate Guide.
"Currently, more than 50,000 certified FRMs are employed internationally at nearly every major bank, asset management firm, hedge fund, consulting firm, and regulator in the world. Registrations for the FRM Exams have grown by an average of 15% per year since 2010 and surpassed 67,000 in 2018, illustrating the rapidly increasing demand for professionals trained in measuring and managing financial risk. "
You can expect this figure to rise with the Nov 2018 certifications being confirmed soon (hopefully).