---
id: "E:cAlgo.API.Internals.Symbol.Tick"
kind: "event"
type: "T:cAlgo.API.Internals.Symbol"
url: "https://help.ctrader.com/ctrader-algo/references/MarketData/Symbols/Symbol/Tick/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# Symbol.Tick

Member of [Symbol](https://help.ctrader.com/ctrader-algo/references/MarketData/Symbols/Symbol/index.md).

## Tick

Occurs on each incoming symbol ticks

Environments: Desktop supported · CLI supported · Cloud supported.

C#:

```csharp
event Action<SymbolTickEventArgs> Tick;
```

Python:

```python
api.Symbol.Tick += handler  # handler(obj: SymbolTickEventArgs)
```

### Returns

`Action<SymbolTickEventArgs>` — 

### Examples

C#:

```csharp
protected override void OnStart()
{
    var gbpUsd = Symbols.GetSymbol("GBPUSD");
    gbpUsd.Tick += OnGbpUsdTick;
}

private void OnGbpUsdTick(SymbolTickEventArgs args)
{
    Print("{0} bid: {1}, ask: {2}", args.SymbolName, args.Bid, args.Ask);
}
```

Python:

```python
def on_start(self):
    gbpUsd = api.Symbols.GetSymbol("GBPUSD")
    gbpUsd.Tick += self.on_gbp_usd_tick

def on_gbp_usd_tick(self, args):
    api.Print(f"{args.SymbolName} bid: {args.Bid}, ask: {args.Ask}")
```