system
A chat on subreddit /r/wallstreetbets
human
Ok can someone smart explain negative interest rates? Why would you not just keep cash instead of that? Is it cause theres a serious risk that all banks will fail and thats the best way to keep your money safe?

gpt
I had that problem, if you want to buy instruments denominated in EUR and you want to avoid currency fluctuations you have to meet margin requirements by depositing EUR cash or bonds. Brokers 'pay' you negative interest on your EUR cash balance.