---
title: "Clear Street"
description: "This page explains the default security-level models and markets of the ClearStreetBrokerageModel."
canonical: https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/brokerages/supported-models/clear-street
markdown: https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/brokerages/supported-models/clear-street.md
language: python
source: https://github.com/QuantConnect/Documentation/tree/master/03%20Writing%20Algorithms/24%20Reality%20Modeling/05%20Brokerages/02%20Supported%20Models/08%20Clear%20Street
modified: 2026-10-25
index: https://www.quantconnect.com/llms.txt
---

# Clear Street

[Documentation](https://www.quantconnect.com/docs/v2.md) > [Writing Algorithms](https://www.quantconnect.com/docs/v2/writing-algorithms.md) > Reality Modeling > Brokerages > [Supported Models](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/brokerages/supported-models.md) > Clear Street

> Code examples are shown in Python. Append `?lang=csharp` to this URL for the C# version of this page.

## Introduction

This page explains the `ClearStreetBrokerageModel`, including the asset classes it supports, its default [security-level models](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/key-concepts.md#02-Security-Level-Models), and its default markets.

```python
self.set_brokerage_model(BrokerageName.CLEAR_STREET, AccountType.CASH)
self.set_brokerage_model(BrokerageName.CLEAR_STREET, AccountType.MARGIN)
```

For more information about this model, see the [class reference](https://www.lean.io/docs/v2/lean-engine/class-reference/py/QuantConnect/Brokerages/ClearStreetBrokerageModel/) and [implementation](https://github.com/QuantConnect/Lean/blob/master/Common/Brokerages/ClearStreetBrokerageModel.cs).

## Asset Classes

The `ClearStreetBrokerageModel` supports the following asset classes:

- [US Equities](https://www.quantconnect.com/docs/v2/writing-algorithms/securities/asset-classes/us-equity.md)
- [Equity Options](https://www.quantconnect.com/docs/v2/writing-algorithms/securities/asset-classes/equity-options.md)
- [Index Options](https://www.quantconnect.com/docs/v2/writing-algorithms/securities/asset-classes/index-options.md)

## Orders

The `ClearStreetBrokerageModel` supports several order types, order properties, and order updates.

### Order Types

The following table describes the available order types for each asset class that the `ClearStreetBrokerageModel` supports:

| Order Type | Equity | Equity Options | Index Options |
| --- | --- | --- | --- |
| [Market](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/market-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |
| [Limit](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/limit-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |
| [Stop market](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/stop-market-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |  |  |
| [Stop limit](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/stop-limit-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |  |  |
| [Trailing stop](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-types/trailing-stop-orders.md) | ![green check](https://cdn.quantconnect.com/i/tu/check.png) |  |  |

### Order Properties

The `ClearStreetBrokerageModel` supports custom order properties. The following table describes the members of the `ClearStreetOrderProperties` object that you can set to customize order execution.

| Property | Data Type | Description | Default Value |
| --- | --- | --- | --- |
| `time_in_force` | `TimeInForce` | A [TimeInForce](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-properties.md#03-Time-In-Force) instruction to apply to the order. The following instructions are supported: `DAY` `GOOD_TIL_CANCELED` `good_til_date` Market orders support only `DAY`, which the brokerage sets automatically. | `TimeInForce.GOOD_TIL_CANCELED` |
| `outside_regular_trading_hours` | `bool` | If set to true, allows orders to also trigger or fill outside of regular trading hours. Clear Street accepts only limit and stop limit orders in the pre-market (4:00 AM to 9:30 AM Eastern Time) and after-hours (4:00 PM to 8:00 PM Eastern Time) sessions. | `False` |

```python
def initialize(self) -> None:
    # Set the default order properties
    self.default_order_properties.time_in_force = TimeInForce.GOOD_TIL_CANCELED

def on_data(self, slice: Slice) -> None:
    # Use default order order properties
    self.limit_order(self._symbol, quantity, limit_price)

    # Override the default order properties
    order_properties = ClearStreetOrderProperties()
    order_properties.time_in_force = TimeInForce.DAY
    order_properties.outside_regular_trading_hours = True
    self.limit_order(self._symbol, quantity, limit_price, order_properties=order_properties)

    order_properties.time_in_force = TimeInForce.good_til_date(datetime(year, month, day))
    self.limit_order(self._symbol, quantity, limit_price, order_properties=order_properties)
```

### Updates

The `ClearStreetBrokerageModel` supports [order updates](https://www.quantconnect.com/docs/v2/writing-algorithms/trading-and-orders/order-management/order-tickets.md#04-Update-Orders).

### Handling Splits

If you're using raw [data normalization](https://www.quantconnect.com/docs/v2/writing-algorithms/securities/asset-classes/us-equity/requesting-data.md#11-Data-Normalization) and you have active orders with a limit, stop, or trigger price in the market for a US Equity when a [stock split](https://www.quantconnect.com/docs/v2/writing-algorithms/securities/asset-classes/us-equity/corporate-actions.md#02-Splits) occurs, the following properties of your orders automatically adjust to reflect the stock split:

- Quantity
- Limit price
- Stop price
- Trigger price

## Fills

The `ClearStreetBrokerageModel` uses the [EquityFillModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/trade-fills/supported-models/equity-model.md) for Equity trades and the [ImmediateFillModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/trade-fills/supported-models/immediate-model.md) for Equity Options and Index Options trades.

## Slippage

The `ClearStreetBrokerageModel` uses the [NullSlippageModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/slippage/supported-models.md#02-Null-Model).

## Fees

The `ClearStreetBrokerageModel` uses the [InteractiveBrokersFeeModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/transaction-fees/supported-models.md#13-Interactive-Brokers-Model) for Equity and Equity Option trades and the [ConstantFeeModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/transaction-fees/supported-models.md#02-Constant-Model) with no fees for Index Option trades.

```python
# For Equity and Equity Option trades:
security.set_fee_model(InteractiveBrokersFeeModel())

# For Index Option trades:
security.set_fee_model(ConstantFeeModel(0))
```

## Buying Power

The `ClearStreetBrokerageModel` uses the `SecurityMarginModel`. If you have a margin account, the `ClearStreetBrokerageModel` allows up to 2x leverage.

## Settlement

The `ClearStreetBrokerageModel` uses the [ImmediateSettlementModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/settlement/supported-models.md#02-Immediate-Model) for margin accounts and the [DelayedSettlementModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/settlement/supported-models.md#03-Delayed-Model) with the [default settlement rules](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/settlement/key-concepts.md#03-Default-Behavior) for cash accounts.

```python
# For cash accounts:
security.set_settlement_model(DelayedSettlementModel(Equity.DEFAULT_SETTLEMENT_DAYS, Equity.DEFAULT_SETTLEMENT_TIME))

# For margin accounts:
security.set_settlement_model(ImmediateSettlementModel())
```

## Margin Interest Rate

The `ClearStreetBrokerageModel` uses the [NullMarginInterestRateModel](https://www.quantconnect.com/docs/v2/writing-algorithms/reality-modeling/margin-interest-rate/supported-models.md#02-Null-Model).

## Default Markets

The default market of the `ClearStreetBrokerageModel` is `Market.USA`.

## Account Currency

The `ClearStreetBrokerageModel` doesn't set a default currency. To change the algorithm's currency from USD to a different currency, see [Set Account Currency](https://www.quantconnect.com/docs/v2/writing-algorithms/initialization.md#03-Set-Account-Currency).