Sàn môi giới chỉ số tổng hợp — mức giá do chính công ty tạo ra

A binary option is a fixed-payout bet on a yes-or-no outcome: if the price is on your side of the line at expiry you receive a set amount, and if it is not you typically lose the full stake. There is no position to manage and nothing to close early on most platforms — the outcome is all or nothing.

The FCA prohibited selling them to retail clients in 2019, describing them as gambling products dressed as investments, and ESMA's prohibition covers the EU. The structural reason: the pricing gives the platform a house edge that is hard for a customer to see, the short expiries invite rapid repeated staking, and the all-or-nothing payoff removes every risk-management tool a trader normally has.

If you are considering a platform that offers binaries, establish these before depositing.

1. Find the exact entity name on the account agreement and look it up on its regulator's own register.
2. Check whether that regulator permits retail binary options at all — the FCA, ESMA members and ASIC do not.
3. Establish what happens to an in-the-money position if the platform disputes the expiry price, and who arbitrates.
4. Test a withdrawal with a small amount before staking anything you would mind losing.
5. Treat any payout percentage in marketing as unverifiable: no external market prices these contracts.

A synthetic index is a number stream generated by the broker's own software, tuned to a stated volatility and styled to chart like a market. Nothing external produces or verifies the price: the firm that quotes it also settles every trade on it, around the clock, weekends included.

That single fact reorganises every question you would normally ask. Spread fairness, execution quality and slippage cannot be compared against any outside reference. The one meaningful external check would be an independent audit of the number generator, published where customers can read it — which is why that audit leads this page's list of unpublished facts.