What Is Copy Trading?

Most retail clients do not want to build a trading strategy. They want access to one. Copy trading is the product that answers that, and it is the reason a large share of retail trading volume now sits inside social and copy platforms rather than in standalone terminals.

The mechanics

A strategy provider — the master — trades their own account normally. Followers subscribe to that master with an allocation. When the master opens a position, the system opens a corresponding position on each follower account, sized proportionally to that follower's allocation rather than copied at the master's raw volume. When the master closes, the followers close.

That proportional sizing is the essential detail. A master trading one lot on a two hundred thousand account and a follower with two thousand cannot take the same position, and a system that copies flat volume will liquidate the follower.

Where implementations fail

The interesting engineering is not the happy path. It is what happens when things do not work:

• The follower has insufficient margin to take the position.
• The master's order is partially filled.
• The master closes part of a position rather than all of it.
• The copy operation fails at the platform level.

Why brokers offer it

1. 1Retention — clients who stop trading manually often keep trading through a strategy.
2. 2Differentiation — a reason to choose you over a broker offering only a raw terminal.
3. 3Volume — followed strategies generate activity across many accounts at once.
4. 4Retaining flow — clients do not need to go to a third-party social trading site.

Copy trading versus managed accounts

Copy trading is client-initiated and client-controlled: the follower chooses the strategy, sets their allocation and can unsubscribe whenever they want. MAM and PAMM operate under a management mandate, which is a different relationship both commercially and in terms of what it implies about regulation. Keep them distinct in how you present them.