The SEC is the primary overseer of the U.S. securities markets while foreign regulators oversee securities markets in other jurisdictions. The SEC and most foreign securities regulators are members of International Organization of Securities Commissions (IOSCO), which develops, implements and promotes adherence to internationally recognized standards for securities regulation.
If you are a U.S. investor with an investment question or complaint, contact the SEC. You may also want to contact a foreign regulator of another country/territory related to the investment.