Web Trader MT5
An option whose existence depends on whether the underlying touches a specified price during the contract’s life. Sits in the family of “exotic” options; non-vanilla derivatives with path-dependent payoffs.
Two main types, four sub-types. Knock-ins (option only activates if barrier is hit) and knock-outs (option dies if barrier is hit), each available as up-and-in, up-and-out, down-and-in, down-and-out. The “up” and “down” refer to whether the barrier sits above or below the spot at issuance.
Why use them? Cost. Because the buyer takes on the additional risk that the barrier behaves badly, the premium is lower than for an equivalent vanilla option. That makes barrier options attractive when you have a specific view about path, not just direction. They’re heaviest in FX markets, where corporate hedgers use them to lower the cost of currency hedges they only need under specific scenarios.
Example: A European exporter expecting USD revenue in six months might buy a down-and-in put on EUR/USD with the barrier 5% below current spot. The hedge only switches on if the euro weakens significantly. But the premium is materially lower than a plain vanilla put, because the corporate is comfortable being uncovered in mild moves.
