Copy trading — how it works and how to vet a trader

Copy trading automates the implementation of selected trading decisions on your account. You choose a provider and allocation settings, but the resulting trades can differ because of minimum size, available instruments, leverage, prices and costs. A provider’s historical return is not a result the platform promises to deliver to you. The useful questions concern exposure, fees, evidence and the rules for stopping.

How copy trading works

Copy trading replicates selected actions according to its allocation formula and your settings. Minimum size, rounding, leverage and execution can change percentage exposure and risk. Check the resulting positions instead of assuming an identical percentage of capital.

eToro calls its feature CopyTrader; MetaTrader also offers a Signals service that can execute trades automatically. A service labelled “signals” is therefore not necessarily manual. PAMM-style accounts describe an allocation arrangement whose custody, reporting and control depend on its documents. Identify what the service actually does rather than assuming every label represents a higher level of delegation or hides individual trades.

What you are actually copying

This is the heart of it, the part the adverts skip. Copying transfers strategy decisions, but exposure depends on the service's allocation formula, your account settings and instrument limits. It need not preserve the provider's effective leverage or percentage risk. If the provider averages into losing positions, that strategy may also be copied with your money; check the resulting position sizes rather than assuming equal percentage risk.

Historical maximum drawdown measures the observed fall in equity from a preceding peak to a trough. It is useful alongside returns, costs and exposure, but it does not set the future loss limit. Ask whether the record includes open losses and how frequently equity was sampled. Ending a copy after a rule breach is a risk decision; a past drawdown does not prove that waiting longer would have recovered the loss.

A hypothetical case: high return, high drawdown

Use this entirely hypothetical profile: +120% over a specified 12-month period, a 60% peak-to-trough drawdown, and a strategy that uses leverage and adds to losing positions. These figures describe different aspects of the same assumed record. They do not establish that a copier lost 60% of their original deposit, or that the strategy will repeat the annual return.

For a separate hypothetical calculation, a PLN 1,000 allocation that itself falls by 60% ends at PLN 400 before further costs. That applies only if the copier experiences that same decline from their own PLN 1,000 starting value. A provider’s equity falling from PLN 2,000 to PLN 800 also has a 60% drawdown, even if the original deposit was PLN 500. The denominator is the preceding peak, not automatically the deposit. A lower historical drawdown warrants investigation, rather than proving a profile suitable to copy.

Why trader rankings mislead — survivorship bias

A ranking containing only surviving, active strategies can omit failed or closed accounts. Check whether such accounts remain visible and whether a trader has earlier profiles. Selecting the best recent result from that restricted list provides incomplete evidence about the original population. A high rank by itself does not establish a repeatable advantage.

Record the stated strategy, position sizes and instruments, then check for changes. Ask how the provider is paid: subscription, allocated capital, trading volume or performance can create different incentives. A compensation arrangement is information to assess, not proof of misconduct. Also inspect whether several copied traders share the same currency exposure; different names do not necessarily mean different risks.

What it costs

Collect spread, commission, funding, conversion, subscription and any performance fee without assuming a copying service always has wider spreads. eToro states that CopyTrader has no additional copying charge while relevant trading charges still apply. MetaTrader documents a possible monthly subscription. A hypothetical USD 80 result already after execution costs, but before a USD 30 subscription, leaves USD 50 before tax. Avoid subtracting any fee twice. Compare the real costs of trading for the specific tariff and holding period.

The regulatory angle

ESMA’s 30 March 2023 supervisory briefing addresses the EU MiFID II framework. Automatic implementation without necessary client action can be portfolio management. Requiring approval for each trade does not automatically mean advice: a personal recommendation is relevant, and other arrangements may be reception, transmission or execution. Suitability applies to advice or portfolio management; other services can involve appropriateness. A stop button alone does not determine classification.

Find the legal firm providing the copying service and any separate firm executing orders. Check their authorisations and scope for your residence and product. A group logo does not transfer permissions between entities. The guide on forexmechanics.com — choosing a broker explains how to record the contract, relevant supervisor and complaint channel before delegating trading decisions.

How to vet a strategy sensibly

Compare like periods and document the source: live account, demo or simulation. Longer history provides more observations but no number of months certifies future performance. Reconcile deposits and withdrawals with reported return, inspect open losses and distinguish balance from equity. A smooth balance curve may conceal floating losses; request the calculation method before judging consistency.

Write down allocation, instruments and exit rules. Stopping new copies, closing existing positions and withdrawing funds are separate operations whose effects depend on the platform. Test what happens if a market is closed or an order fails; an equity trigger is not an unconditional exit-price guarantee. Compare shared exposures rather than treating several trader names as diversification. Paid forex signals and proprietary trading firms have different contracts and cost structures, so do not transfer copying assumptions to them.

What to do before you copy your first trader

1. Check how drawdown is measured. Identify the equity peak, trough and sampling frequency, including open losses. Treat the observation as history, then record your own risk and exit rules without assuming recovery.
2. Compare complete records. Use the same dates and distinguish live trading from simulations. Check closed strategies, cash flows and all charges; neither a year of data nor a smooth chart proves future success.
3. Check copied exposure and termination. Calculate the resulting size and identify shared exposures, minimum-volume effects and what remains open when copying stops. See trader risk management for concentration and position-risk checks.
4. Verify the oversight and the service status. Check which regulator covers the platform and whether it formally provides you portfolio management, advice, or mere execution — that determines your rights when something goes wrong.