I believe it's from a Binary Trading company, wanting you to invest. Legit stock brokers don't engage prospects in such an unprofessional manner, making it clear that this is something to avoid. I was concerned as I thought it might have been a company I sent a resume to, but somehow kept missing their calls. I'm glad I foun this site, as now I can rest easy.
Thank you to everyone who commented, as I can now block that number (which, btw, also calls from the last digits of 7509. I have at least half a dozen #'s I have had to block fr the same outfit. I have said "no" but they keep calling.) Unprofessional [***].