Key principle
Allocation methods are applied only at the moment a position is opened on an investment account. Once open, the size is fixed and is not recalculated — even if the balance or equity ratio between the master and investor changes afterwards. The single exception is proportional closure.
Key Takeaways
- Applied only at opening — the method sets the initial size and never touches positions that are already open.
- Balance/equity changes don’t matter — later fluctuations, deposits, or withdrawals don’t resize open positions.
- Proportionality is preserved in one case — the initial master-to-investor ratio is maintained during partial closures (see below).
- Investors stay in control — after copying, an investor can adjust their own positions without affecting the system.
Proportional Position Closure (the Exception)
During partial closures the system automatically maintains the initial proportion between the master and investor positions. The example below walks through how it triggers.
| Step | Action | Master position | Investor position | Proportion |
|---|---|---|---|---|
| 1 | Investor copies the master’s position | 1 lot | 2 lots | 2 : 1 |
| 2 | Investor partially closes independently | 1 lot | 1.6 lots | — (investor-initiated) |
| 3 | Master closes 1 → 0.9 lot | 0.9 lot | 1.6 lots | unchanged |
| 4 | Master closes 0.9 → 0.8 lot | 0.8 lot | 1.6 lots | unchanged |
| 5 | Master closes 0.8 → 0.7 lot — closure triggers | 0.7 lot | 1.4 lots | 2 : 1 restored (1.4 / 0.7) |
Small master reductions leave the investor untouched until a closure pushes the master below the original ratio; at that point the investor position is reduced proportionally to restore the 2 : 1 relationship.
