---
title: 'option'
sidebar_label: 'option'
sidebar_position: 1
---

# longbridge option

Look up real-time quotes for US option contracts and browse the full option chain for any underlying symbol.

## Basic Usage

```bash
longbridge option chain AAPL.US
```

```
| Strike | Call Symbol          | Put Symbol           | Standard |
|--------|----------------------|----------------------|----------|
| 180    | AAPL260406C180000.US | AAPL260406P180000.US | true     |
| 185    | AAPL260406C185000.US | AAPL260406P185000.US | true     |
| 190    | AAPL260406C190000.US | AAPL260406P190000.US | true     |
| 195    | AAPL260406C195000.US | AAPL260406P195000.US | true     |
| 200    | AAPL260406C200000.US | AAPL260406P200000.US | true     |
...
```

## Examples

### Browse the option chain for a stock

Without `--date`, this returns all available expiry dates for AAPL options. Pick an expiry date, then pass it with `--date` to see the strikes.

### View strikes for a specific expiry

```bash
longbridge option chain AAPL.US --date 2026-04-17 --format json
```

```json
[
  { "call_symbol": "AAPL260417C110000.US", "put_symbol": "AAPL260417P110000.US", "standard": "true", "strike": "110" },
  { "call_symbol": "AAPL260417C115000.US", "put_symbol": "AAPL260417P115000.US", "standard": "true", "strike": "115" },
  { "call_symbol": "AAPL260417C120000.US", "put_symbol": "AAPL260417P120000.US", "standard": "true", "strike": "120" }
]
```

Each row shows the call and put symbols for that strike. Copy a symbol from `call_symbol` or `put_symbol` to get a live quote.

### Get a real-time quote for an option contract

```bash
longbridge option quote AAPL260417C190000.US --format json
```

```json
[
  {
    "symbol": "AAPL260417C190000.US",
    "last": "12.35",
    "bid": "12.30",
    "ask": "12.40",
    "open_interest": "4821",
    "implied_volatility": "0.2341",
    "delta": "0.4812",
    "gamma": "0.0231",
    "theta": "-0.0512",
    "vega": "0.1843"
  }
]
```

Returns the latest bid, ask, last price, implied volatility, and greeks (delta, gamma, theta, vega) for the given contract.

## Requirements

`option quote` requires an options account and options market data permission. `option chain` works with Level 1 quote access. See [Quote Permissions](/docs/quote/) for subscription details.

## Notes

Option symbol format: `AAPL260417C190000.US` — underlying AAPL, expiry 2026-04-17, Call, $190.00 strike. The numeric price component is in units of $0.001, so 190000 = $190.00.