Getting Tick Value, Size, and Contract Size

Request: retrieve tick value, tick size, and contract size for multiple symbols Useful for calculating profit/loss and position sizing.

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Code Example

// --- Quick use (service wrapper) ---
// Prints tick value/size/contract size for given symbols.
symbols := []string{"EURUSD", "XAUUSD"}
svc.ShowTickValues(ctx, symbols)

// --- Low-level (direct account call) ---
// Preconditions: account is already connected.

symbols := []string{"EURUSD", "XAUUSD"}

ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
defer cancel()

data, err := account.TickValueWithSize(ctx, symbols)
if err != nil {
    log.Fatalf("❌ TickValueWithSize error: %v", err)
}

for _, info := range data.Infos {
    fmt.Printf("💹 Symbol: %s\n  TickValue: %.5f\n  TickSize: %.5f\n  ContractSize: %.2f\n\n",
        info.GetSymbolName(),
        info.GetTradeTickValue(),
        info.GetTradeTickSize(),
        info.GetTradeContractSize(),
    )
}

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Method Signature

func (s *MT4Service) ShowTickValues(ctx context.Context, symbols []string)

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🔽 Input

Field	Type	Description
symbols	[]string	List of trading symbols (e.g., "EURUSD").
ctx	context.Context	For timeout and cancellation management.

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⬆️ Output

Returns *pb.TickValueWithSizeData containing:

Field	Type	Description
Infos	[]*pb.TickValueWithSizeSymbolInfo	Tick-related info per symbol.

Each *pb.TickValueWithSizeSymbolInfo includes:

Field	Type	Description
SymbolName	string	Trading symbol (e.g., "EURUSD").
TradeTickValue	float64	Value of one tick in account currency.
TradeTickSize	float64	Smallest possible price movement.
TradeContractSize	float64	Units per lot (e.g., 100000 for major FX).

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🎯 Purpose

Access core trading calculations such as:

• Estimating profit/loss per tick movement
• Determining pip/tick monetary value
• Building accurate position sizing formulas

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🧩 Notes & Tips

• Currency context: TradeTickValue is in the account currency. Cross-currency symbols will factor broker conversions.
• From tick to pip: If you need pip value, convert via symbol Point/Digits from SymbolParams.
• Vector use: Prefer this batched call over per-symbol queries when working with lists.

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⚠️ Pitfalls

• Empty input: The API requires at least one symbol — calling with an empty slice returns an error.
• Mixed asset classes: Contract sizes differ across FX, metals, indices — don’t assume 100000 universally.
• Precision: Use appropriate formatting; keep raw floats for calculations.