Is APX an abbreviation for approximately?

Excuse me, but could you clarify something for me? I've come across the term "APX" in a few contexts and I'm wondering if it's commonly used as an abbreviation for "approximately"? I've seen it in a few financial reports and cryptocurrency discussions, and I'm curious if it's a standard abbreviation in those fields or if it's specific to certain contexts. If you could provide some insight, I'd greatly appreciate it.