> ## Documentation Index
> Fetch the complete documentation index at: https://developer.buildmarkets.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# New Order Single <D>

> How to create new equity or single-leg option orders through the FIX Gateway using the New Order Single message.

## Overview

The New Order Single message (MsgType = `"D"`) creates new equity or single-leg option orders through the FIX Gateway.

## Field Layout

| Tag | Field             | Description                                | Required | Type         | Values                                          |
| --- | ----------------- | ------------------------------------------ | -------- | ------------ | ----------------------------------------------- |
| 1   | Account           | Trading account                            | Y        | String       |                                                 |
| 11  | ClOrdID           | Unique order identifier assigned by client | Y        | String       |                                                 |
| 38  | OrderQty          | Order quantity (contracts or shares)       | Y        | Qty          | `0` for Dollar Amount orders                    |
| 40  | OrdType           | Order type                                 | Y        | Char         | `1`=Market, `2`=Limit, `3`=Stop, `4`=Stop Limit |
| 44  | Price             | Limit price per unit                       | C        | Price        | Required when OrdType = 2 or 4                  |
| 48  | SecurityID        | Security identifier (venue-specific)       | N        | String       |                                                 |
| 54  | Side              | Order side                                 | Y        | Char         | `1`=Buy, `2`=Sell                               |
| 55  | Symbol            | Security symbol (uppercase)                | Y        | String       | e.g., `AAPL`, `MSFT`                            |
| 59  | TimeInForce       | Duration of order                          | Y        | Char         | `0`=Day, `1`=GTC                                |
| 60  | TransactTime      | Transaction timestamp                      | Y        | UTCTimestamp |                                                 |
| 76  | ExecBroker        | Executing broker identifier                | N        | String       |                                                 |
| 99  | StopPx            | Stop price                                 | N        | Price        | Required when OrdType = 3 or 4                  |
| 152 | CashOrderQty      | Dollar amount for notional orders          | N        | Numeric      | See Dollar Amount Orders                        |
| 167 | SecurityType      | Instrument type                            | Y        | String       | `CS`=Common Stock, `OPT`=Option                 |
| 200 | MaturityMonthYear | Option expiry year/month                   | N        | MonthYear    | Format: `YYYYMM`                                |
| 201 | PutOrCall         | Put or Call indicator                      | N        | Int          | `0`=Put, `1`=Call                               |
| 202 | StrikePrice       | Option strike price                        | N        | Price        |                                                 |
| 205 | MaturityDay       | Option expiry day of month                 | N        | Int          | 1–31                                            |

## Examples

### Equity Market Order — Buy 100 shares of AAPL at market

```
8=FIX.4.4|35=D|49=CLIENT1|56=BUILDMARKETS|11=ORD-20260212-001|1=ACC123456789|55=AAPL|167=CS|54=1|38=100|40=1|59=0|60=20260212-14:30:00.000|10=123|
```

### Equity Limit Order — Buy 50 shares of MSFT at \$420.00 limit, GTC

```
8=FIX.4.4|35=D|49=CLIENT1|56=BUILDMARKETS|11=ORD-20260212-002|1=ACC123456789|55=MSFT|167=CS|54=1|38=50|40=2|44=420.00|59=1|60=20260212-14:30:00.000|10=045|
```

### Single-Leg Option Order — Buy 5 AAPL March 2026 $230 Call contracts at $4.50 limit

```
8=FIX.4.4|35=D|49=CLIENT1|56=BUILDMARKETS|11=ORD-20260212-003|1=ACC123456789|55=AAPL|167=OPT|54=1|38=5|40=2|44=4.50|59=0|201=1|202=230.00|200=202603|205=20|60=20260212-14:30:00.000|10=067|
```

## Option Field Notes

When `SecurityType=OPT`: **Tag 201 (PutOrCall)** — `0`=Put, `1`=Call (FIX convention differs from REST API); **Tag 200 (MaturityMonthYear)** — Format `YYYYMM` (e.g., `202603` for March 2026); **Tag 205 (MaturityDay)** — Day of expiration (e.g., `20`); **Tag 202 (StrikePrice)** — Decimal strike price.

## REST Equivalent

* Equity orders: `POST /api/external/create` with `SymbolType=1`
* Option orders: `POST /api/external/create` with `SymbolType=2` and `OptionOrderLegs.*` parameters