Do US brokerage firms follow FATCA(or similar)?

Hi

I have a US brokerage account. Will US brokerage firms inform tax authorities in my country about my earnings/capital gains? Do they fall under FATCA(or other) regulation? I'm a non-US resident and not a US citizen. The country I live in has "signed" the FATCA regulations according to this; Foreign Account Tax Compliance Act (FATCA)

Thanks in advance for the info.